Another Cheap MPPT Charge Controller - CPT-LA10 - 12v Solar Shed

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  • เผยแพร่เมื่อ 26 ก.ย. 2024
  • Another device on eBay being sold as Maximum Power Point Tracking which I wanted to confirm or debunk. This is a fully featured solar charge controller with load outputs and USB sockets for charging mobile phones and the like.
    The 12 volt 2.5mm outputs can output 6 Amps, and the USB can output up to 3 amps across both ports which isn't too shabby.
    ❗️These links are affiliated and I may earn a small commission if you purchase❗️
    The item was purchased on eBay: goo.gl/t6A4h0
    I've posted a short update to this review here: • Another Cheap MPPT Cha...

ความคิดเห็น • 261

  • @trevortrevortsr2
    @trevortrevortsr2 7 ปีที่แล้ว +2

    This unit is on our camper van and works great with 100w mono crystal panel & 110ah sealed battery - the only odd thing is that when the inside of the van is very hot the float charge volts drops to as low as 13.2v as it should to avoid gassing and the LED battery indicator reads 75% however the battery is actually fully charged - it seems the temperature sensor is linked to the float charge level but not the LED indicator - We went to a 4 day festival last week and lost count how many asked if we could charge their phones etc from the USB ports - both ports were in use from morning till night!

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      +Trev S I bet you were popular, and I hope a couple of drinks were bought to say thank you! That's really interesting to know. It's good that it reduced the voltage to prevent too much gassing but odd that they didn't write that into the state of charge code. I'm sure others will find that handy. Thanks.

  • @tobimai4843
    @tobimai4843 8 ปีที่แล้ว +4

    YAY I love the cheap charge controller videos. Maybe I want to start a little solar storage and try to run a small server off of it. We (my parenst) already have 1.4kW on the roof feeding directly into the grid. Still going after 20 years :)

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Tobimai Thanks Tobimai.

  • @RetiredRoadTrips
    @RetiredRoadTrips 5 ปีที่แล้ว +7

    FYI, if you put capacitors in series, you get the voltage handling of both added together and the capacitance is divided. I can tell from the video, but, if those 63v input caps are in series, the voltage capacity is 126v.

    • @richielonewolf7725
      @richielonewolf7725 5 ปีที่แล้ว

      Can you explain that to me how would it work? I have 3 phocos cis and i want to use them to charge faster my battery bank but they are pwm

  • @vylbird8014
    @vylbird8014 8 ปีที่แล้ว +4

    Two nice inductors, several MOSFETs, screw terminals, caps, a buck converter you could extract and rebuild... the parts alone are almost worth that £21. However, since you made this video, the price has gone up - to £28.
    I'm in the process of designing an MPPT unit myself now, but even if it works - and I am not confident it will - it'll only be of comparable cost, and limited to 12V, 100W-max.

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +1

      +Vyl Bird Sorry if I've increased the cost - didn't know I had such power! You're right, the parts are worth a fair bit - rebuilding would be an interesting idea. Thanks

    • @sullivanzheng9586
      @sullivanzheng9586 ปีที่แล้ว

      I also tried to build my own. And I sadly realized that in most cases, DIY project can not rival commercial products neither in price nor performance. Most of these commerial products manufacturers really understand how to extract the last bit of performance and value of the chip and passive components they used, and they have a real advantage in supply chain management and procurement. I know some vendors even can ask MOSFET makers to tailor MOSFETs with specialized specs for their products....And there are many plants who are willing to do such tailored products such as Consonance-elec etc.

  • @freeranger1677
    @freeranger1677 5 ปีที่แล้ว

    Adam Welch - Modern Deep Cycle Batteries need 14.8V to charge to 100% so the voltage you were seeing on the output was bang on to get a full charge.

    • @thedavesofourlives1
      @thedavesofourlives1 3 ปีที่แล้ว

      taking into account the voltage drop to the battery wiring and lack of a sense wire.

  • @antpowell5974
    @antpowell5974 7 ปีที่แล้ว

    Many thanks for that. I have just ordered one of these to replace the fake one installed in innocence previously. I was going to add another panel but hopefully this will achieve the same increase in performance at less cost.

  • @imchris1978
    @imchris1978 8 ปีที่แล้ว +2

    Ive had one of these charge controllers nearly 2 years now and its never skipped a beat on my shed lighting system, the 2 63v caps are in series on mine not sure why they didn't use a slightly higher value 100v cap im guessing 2 lower voltage caps in series is fractions cheaper that the bigger cap. Great review.... btw there is a lithium battery version too...

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      Thanks Chris - good to hear you're getting good service out of yours. Capacitors in series - of cause! I'll check this. I think I need to do a quick update video as there's a few questions I need to address. Thanks again.

    • @stickmenwithrayguns
      @stickmenwithrayguns 8 ปีที่แล้ว

      The 2 * 220uF /63V are not in series... They are connected in parallel!The reason for them not being +100V types is that they aren't "seing" the raw solar panel voltage, but are filter capacitors placed after the MPPT Buck Converter.Btw.: 2 low voltage caps in series would have a capacity of only ( c1^-1 + c2^-1 ) ^-1. => This solution would be inefficient from a cost perspective.

  • @trickyriky1
    @trickyriky1 8 ปีที่แล้ว +6

    finally a budget mppt, happy days, thank you very much for all your vids, if it wasnt for the youtube stars, id still be a slave of society :)

  • @transitbackpackers2181
    @transitbackpackers2181 7 ปีที่แล้ว +2

    Just looking at this video, when using a 12V solar panel, the current out is almost always less than the current in, so overall losses using this device seem to be more than just having a direct connection to battery (even worse note that the IV curve will cause solar panel to give even more current when pulled to the lower voltage by the battery). When 24V panel is connected, you can see some better current figures - showing that the PWM/MPPT is effective (i.e. the current out is greater than the current in)...Phil.

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      To be honest I didn't give this little charge controller a fair run for it's money. All too often when I'm free to test, the sun isn't playing. This will probably perform much better near it's maximum limits. The issue is that converting power is inefficient so converting a small amount of power may not even supply enough power to the charge controller it's self. Or in my experimentation, it was just enough, with a small amount left to put into the battery.
      At higher voltages, and under some proper sun, this charge controller will probably produce better results - it have definitely been designed to do the job.

    • @transitbackpackers2181
      @transitbackpackers2181 7 ปีที่แล้ว +1

      Yes I see your point and agree...any module will consume power itself, which is why published efficiencies of 85-90% are usually only seen near their rated power outputs...this one has extra convenient things like 5v PWM and multiple outputs which might consume more fixed power...would be interesting to see how it goes with a higher input power...Phil

  • @voneschenbachmusic
    @voneschenbachmusic 8 ปีที่แล้ว +1

    Agreed - not bad for the price; might be a nice solution for a relatively inexpensive smaller system.

  • @rbejder
    @rbejder 7 ปีที่แล้ว

    Very useful, thanks a lot! researching products for a small solar system on my van to be used in arctic/subarctic Scandinavia so efficiency and a tight budget is on my mind. very helpful this is!

  • @alexisjohnR
    @alexisjohnR 7 ปีที่แล้ว +1

    Really liking your videos on MPPT controllers. What I would love you to test is at high loads and for a few hours. I have experienced some serious overheating on some controllers which makes me think they won't last.

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      Thanks very much. You make a good point but those kinds of tests are hard to do. Either I need a large battery bank which is well discharged or I need a decent load to shove on it for a while - but the load needs to be managed. Sadly I don't have the free time to test for such long periods. I've recently done a video on the charge controller I've been using for a number of months pointing out a couple of it's issues though.

  • @bigjon1359
    @bigjon1359 7 ปีที่แล้ว

    Great video. I NEVER watch the commercials on youtube until I found your channel. Thanks for your videos and I just mute them on your channel because I value your contributions to us, tinkerers.

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      Many thanks for the kind comments. Nice to have you watching. :-)

  • @west124
    @west124 6 ปีที่แล้ว

    I would like to thank you for this video and generally your work to show us what is what re: real or fake mppt controllers. I am trying to determine this about a controller that came with a now out business wind turbine. Your vid gives me some clues and I will be testing it using some of the methods I have seen here. Thanks

    • @AdamWelchUK
      @AdamWelchUK  6 ปีที่แล้ว

      You’re welcome. Thanks.

  • @sakthicon
    @sakthicon 2 ปีที่แล้ว

    Thank you for sharing your knowledge.

  • @JulianIlett
    @JulianIlett 8 ปีที่แล้ว +12

    I love it - gotta get me one of them - when it's back in stock :)

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +5

      It seems to have gone up in price too - not sure if that's my fault!
      I'm going to have to do a little update video, some helpful peoples comments have pointed out a couple of things I didn't test or think of. I love the feedback and ideas I get back.
      Thanks for your comments :-)

    • @JN.0_o
      @JN.0_o 7 ปีที่แล้ว

      Hi Julian. Did you end up getting one? I've just ordered one.

    • @Anhidema
      @Anhidema 5 ปีที่แล้ว

      ​@@JN.0_o where did you get it from ?

    • @JN.0_o
      @JN.0_o 5 ปีที่แล้ว +1

      @@Anhidema I ended up getting mine from eBay, though that was 2 years ago so I'm not sure if they're still available now

    • @Anhidema
      @Anhidema 5 ปีที่แล้ว

      @@JN.0_o Is it still working ? and does it do the job as it's expected after 2 years ?

  • @SYKOMORF
    @SYKOMORF 7 ปีที่แล้ว +1

    thank god. bought one b4 i saw this review. can't wait to hook it up to my 50 watt bosch flexi panel now. thanx.

  • @relaxingprawn
    @relaxingprawn 5 ปีที่แล้ว +1

    It makes got sense to buy a reliable trustworthy PWM controller instead of a cheap MPPT. Your cheap MPPT has the ability to destroy your batteries and solar panels, ensuring that the device does not destroy the system is of Paramount importance.

    • @trevortrevortsr2
      @trevortrevortsr2 5 ปีที่แล้ว

      We have one on our camper for over 2 years and it has worked flawlessly

  • @sreekumarUSA
    @sreekumarUSA 5 ปีที่แล้ว

    While thanking you for the hard work of educating and explaining the features of MPPT system boards, it’s unbelievable to see the Engineer pointing the components with a metal object. This is not the first time, that I’m viewing that procedure. Those who learn from you may also practice what they see from the Master. With what one should point/ probe the passive components, is left to the Engineer to determine. Cheers.

    • @Hzwo1990
      @Hzwo1990 4 ปีที่แล้ว

      oh I bet you are not an engineer :-)

  • @JodiFCobb
    @JodiFCobb 3 ปีที่แล้ว

    Use caution when buying, and or connecting!

  • @larrygonce1637
    @larrygonce1637 7 ปีที่แล้ว +1

    hi Adam... looking at 12:40 in your video, you have had 0.417ah go in to the controller, but it put 0.508ah into the battery. A pwm couldn't do that, so it's not too bad... cheers, and thanks for another interesting video...Larry

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      Yeah it's definitely MPPT. On a different day and on a bigger set of panels I think it would do quite well.

  • @Dennis-mq6or
    @Dennis-mq6or 7 ปีที่แล้ว

    They would be perfect if they allowed you to preset the charge voltage limits; so you could charge other voltage batteries; such as a 6 volt battery or banks of LiIon cells.
    I researched the company, and you can purchase chargers for 3 or 4 LiIon cells in series connection; but you have to purchase a separate charger for each size.
    That could mean I would need 4 chargers if I wanted to charge a 6 volt battery, (my antique cars have their batteries constantly trickle charged by solar), 3 cell Li-Ion for my 12 volt drills, 4 cell for my 16 to 18 volt drills, and another one for each 12 volt battery.
    Their current drain is limited to 2C, so the 5 amp version will only allow a 10 amp load, which is not nearly enough for a decent inverter system.
    I guess that if you don't have to worry about those design limitations; they are perfect!

  • @moeshickenyay
    @moeshickenyay 7 ปีที่แล้ว

    Always good reviews thanks

  • @billarroo1
    @billarroo1 4 ปีที่แล้ว

    Great Video nice tutorial,
    I like it when U take apart the mppt charge controller and explain the system. Thanks William Orange county, ca.

  • @tigertoo01
    @tigertoo01 6 ปีที่แล้ว

    It could still be PWM as PWM will drop the voltage to the battery level but waste the watts in the difference of the solar panel voltage and the batteries voltage which might account for the high waste.

  • @GadgetAddict
    @GadgetAddict 8 ปีที่แล้ว

    Interesting. I guess it would really make more sense to spend a little more and get a controller that isn't wasting so much power.

  • @ramellin
    @ramellin 8 ปีที่แล้ว +1

    Excellent video.

  • @immrnoidall
    @immrnoidall ปีที่แล้ว

    I'm thinking about hooking this up to the load output of my 24 volt system with a 12v battery to keep it charged for 12v things in the camper that have high amp draw startup like fridge or pump. Everything DC in the camper, is still 12v . I tried to substitute a 24V to 12v [20 amp] stepdown, for the regular 12v battery but, it went poof.

  • @SuperFredAZ
    @SuperFredAZ 6 ปีที่แล้ว

    a mil is 1/1000 th of an inch. 14 pin DIP Integrated Circuits are spaced at 100 mils. what you are talking about on the front of the device is mm= milimeters.

  • @raisagorbachov
    @raisagorbachov 6 ปีที่แล้ว

    Neat video. Very informative. It might be fun if you compared this to the trashy CMP02 and uts black and blue digital buddy. Now those two I have used. The blue one throws a wobbly every time my ventilation fans start (2x2.5a 12v fans) despite being 30A. The other one (led edition) fails to fully charge a battery.

  • @Luke-san
    @Luke-san 8 ปีที่แล้ว +2

    wow. looked good in the beginning. Was thinking, now add a for them 1 euro/dollar/pound lcd with measurements like voltage and amps and we have a winner. Now as David also mentioned, where the hell is the efficiency, the meaning of using MPPT. Would be interesting to compare it with that other pwm controller. Shouldn't using a power supply instead of a panel be better to measure the loss or efficiency?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +1

      +Luc Peeters Yeah using a power supply might give more steady results to measure from but it's not a real world test. Perhaps next time I'll look at running it on both a psu and a panel for some of the tests. Thanks for your comments.

    • @vgamesx1
      @vgamesx1 8 ปีที่แล้ว

      +Adam Welch Yeah that'd be nice and I don't know how you do your tests but it would be a good idea to have a load on your batteries just to make sure it doesn't go into float charge.

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +3

      +vgamesx1 Yes I usually put a load on - but I also want to see the different charging stages.

  • @freetrailer4poor
    @freetrailer4poor 8 ปีที่แล้ว +1

    I think you should drain battery to test. Minute 11:00 amps panel .63 and amps battery 1.4 which is good.

  • @mr.makeit4037
    @mr.makeit4037 3 ปีที่แล้ว

    FYI. Just looked this item up on ebay. Going for over 61.00 dollars us. As of January 2021. Very expensive for what you get.

  • @5j5estes
    @5j5estes 4 ปีที่แล้ว

    Great mppt video

  • @fred8565
    @fred8565 7 ปีที่แล้ว

    thanks mate keep up the good work.

  • @vgamesx1
    @vgamesx1 8 ปีที่แล้ว +2

    Very nice find, I think I've seen these once before and immediately wrote them off as fakes but that isn't too bad and it even appears to actually be tracking, I may consider getting one.

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +1

      +vgamesx1 I was surprised too. I'm glad I ordered one now.

    • @vgamesx1
      @vgamesx1 8 ปีที่แล้ว

      ***** Then again...
      I had to have a look on ebay and the price of those Tracer charge controllers appears to have gone down and I quite liked that one.
      I've managed to find these around $40 (£30) while the the tracer is now as low as $55 (£41) yeah just a little bit more, so the only advantage this one has is a bunch of outputs which is nice but I'm thinking the tracer is an even more worthwhile buy right now.
      What did your originally cost?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +1

      +vgamesx1 If the price has tumbled that much grab the tracer. It's a much better controller. Better build quality, much bigger heatsink, the screen and the RS485 port - it's a no brainer. The tracer originally cost me just short of £70.

    • @vgamesx1
      @vgamesx1 8 ปีที่แล้ว +2

      ***** Well it's for a 10A version which may not have existed back when you did your video on the 20A version, the 20A is about $80 (£60) so it's dropped a bit, but wow the 10A version being nearly half the cost which makes it really cheap for good MPPT, man electronics these days sure is wonderful huh? :)

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว +3

      +vgamesx1 Absolutely. Cheap and reliable solar charge controllers has to be good for developing countries too.

  • @pulesjet
    @pulesjet 6 ปีที่แล้ว

    Check how those Caps are wired. If back to back series they would make the 100V rating and some head room, eaa?

  • @Nic7320
    @Nic7320 7 ปีที่แล้ว +2

    They may have stacked the two 63 volt electrolytics in series to handle the 100 volts.
    Not as good as a single higher voltage capacitor, but as long as the leakage currents and voltages are roughly equal, it can work.
    BTW, where's your ESD wriststrap?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +4

      I believe you are correct regarding the caps. Hopefully they take an even load. ESD wrist strap - you're right, I forgot to clip on my wireless one. ;-)

  • @QUADBOYification
    @QUADBOYification 3 ปีที่แล้ว

    It would really still be worth it's money if those 4 separate 12v ports are regulated (Constant) through that second Inductor. Imagine it would be battery assisted and is drawing more than 12v to sustain regulating these 4 ports. It would be the ideal unit for a DIY portable Solar Power Generator. Where can i buy this version?

  • @izzzzzz6
    @izzzzzz6 6 ปีที่แล้ว

    Once the battery is almost charged it would be difficult to rate the efficiency of the device.
    Once the battery is only drawing a small amount of current as it is almost charged then the efficiency of the system is not so important. The charge controller might be wasting power at this almost completed level of charge but that is no longer important as the batteries are charged so nothing else can use the available power anyway. It would be more interesting to see how efficient the system is when the battery is close to dead and is drawing it's maximum amount of current.

    • @AdamWelchUK
      @AdamWelchUK  6 ปีที่แล้ว

      Yes I always try to depleat a battery before testing - and often add a load directly to the battery to prevent it from charging too much.

  • @phinok.m.628
    @phinok.m.628 7 ปีที่แล้ว +3

    Well... I'm not too impressed by the fact, that the battery amperage is mostly lower than the solar panel amperage even though the voltage is also lower. Any PWM controller can bring the voltage down. The trick is to maintain the wattage through the conversion which would require the amperage to rise when the voltage falls and vice versa. So, assuming it is a genuine MPPT charge controller. I do consider it kinda useless since as far as I can tell, it doesn't seem to be any more efficient than a cheap PWM charge controller is.
    It may however be interesting to see what happens when the solar panel voltage is lower than the battery voltage, can it boost the voltage? That would definitely not be possible with a PWM charge controller.

    • @it886514
      @it886514 7 ปีที่แล้ว +1

      Curiously, Adam misses the fact that the amps don't go up.
      Instead, he points out that the voltage goes down, and takes that as a sign that DC-DC conversion is done.
      But that assumption is without merit. A PWM would drop the voltage in a similar way without doing any DC-DC conversion. I admit that the device's innards look convincing, and that some scanning appears to happen. But the efficiency seems to be no better than PWM.

    • @ericbrockhus2518
      @ericbrockhus2518 5 ปีที่แล้ว

      @@it886514 true, but later in the video you see the amp out is higher than the amp in so it does mppt. Only not very efficient. The first part of the video you only see pwm action more or less.

  • @Anhidema
    @Anhidema 5 ปีที่แล้ว

    If the battery is above about 85% charged you wont be able to know.
    As above about 85% MPPT revert to being PWM.
    You need to discharge the battery to about 60% then connect a panel at least 2 times the nominal battery voltage
    ie .... 36v and above panel and 12v battery.

  • @opengreenenergy
    @opengreenenergy 8 ปีที่แล้ว

    Excellent video.
    It's really helpful...

  • @stevemcgowan3017
    @stevemcgowan3017 5 ปีที่แล้ว

    I have ,made. My own ebike 54 volt 18650 battery thought about using on van but charging tricky use inverter I guess but difference in voltage to van electrics tricky

  • @1981dasimpson
    @1981dasimpson 8 ปีที่แล้ว

    wattage reading is not what we need to look at with mppt but the current solar side to battery side as you can see going from 24v to 12 volt we seem to get mppt as power is almost double the current into the battery then what the panel produce but when the 12v panel and 12v battery the mppt was not very great I think the higher the solar series power the better the mppt will do

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      Hi David - Watts is voltage times current so it's the easiest figure to compare quickly as the solar input bounces around and changes. Comparing watts allows us to look at the efficiency of the DC conversion. It's actually easier once the video is produced to pause the video every so often and compare the input and output stats and see the increased current and reduced voltage.
      If you take a look at the images here: admw.uk/jb You can see DC2DC conversion is happening - 40v and 0.8 amps which is 32 watts in and we're seeing 14.6 volts and nearly 1.5 amps which is 21 watts on the output. So the conversion isn't very efficient 32 watts in, 21 out, but it is converting the power and we are seeing an increase to the current and a drop in the voltage.

  • @randyscc
    @randyscc 7 ปีที่แล้ว

    Great review thanks!. I have been using this controller for a year and it works well. Could you check the efficiency over a long period of time? It looks like the watt meter flashes the total AH (amp hours) and total WH (watt hours) in the lower left. If you let this run for a few hours I think you should be able to divide the WH form the 2 meters to get a rough efficiency. This assumes controller stays in full charge mode and does not go into trickle or float charge mode. thanks again

  • @bwselectronic
    @bwselectronic 4 ปีที่แล้ว

    I wouldn't mind one of these for lithium ion batteries

  • @tofo2
    @tofo2 7 ปีที่แล้ว

    It is not possible to test MPPT if the batteries are fully charged when starting. The MPPT will disconnect your panels as there is no power needed.

  • @PipeManPeep
    @PipeManPeep 5 ปีที่แล้ว

    The efficiency seemed to drop when it switched to float charge.
    Would be interesting to see it on a flatter battery.

    • @Tore_Lund
      @Tore_Lund 4 ปีที่แล้ว

      That is not critical, as you don't have anywhere to put the solar power and it has to go somewhere.

  • @Mr2cmE
    @Mr2cmE 6 ปีที่แล้ว

    I know why the efficiency is low. You need Vbatt + 5V for max efficiency. Yes?

  • @michaelo2l
    @michaelo2l 6 ปีที่แล้ว

    The 63 volt electrolytic caps look like they are in series? ... if so, 100 volt in should be no problem...

  • @johncornell13
    @johncornell13 8 ปีที่แล้ว +2

    love that screwdriver you have, are they available on the mighty Ebay?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +John Cornell Probably, but I got them from Poundland here in the UK.

  • @davidjames1684
    @davidjames1684 6 ปีที่แล้ว

    Shouldn't you be using a battery in a low state of charge so that it can accept the full output of the charge controller without having to introduce an external load?

  • @JodiFCobb
    @JodiFCobb 3 ปีที่แล้ว

    I've bought 3 that over charge

  • @terrytytula
    @terrytytula 7 ปีที่แล้ว +1

    Liked the video so much that I went out and bought the charge controller. The only thing I'm unsure of is how to utilize the load connectors, the pair on the right. For example, how big a load can you power off them and when and for what should you use them. Any thought's?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      The regulated 12v load outputs on the 5.5/2.1mm barrel connectors are only for light loads. They seem well suited to strings of 12 volt LEDs. The manual says you can output up to 6 amps on those connectors - not sure I would though. 3 amps mentioned on the USB ports too.
      Thanks for the kind comments.

  • @ratgreen
    @ratgreen 6 ปีที่แล้ว

    Whats the difference between using a cheap MPPT charge controller and just a regular buck converter set to your battery voltage. Obviously it lacks any battery charge protection but they are cheaper.

  • @maicod
    @maicod 8 ปีที่แล้ว +4

    Adam take leave from work cause the coming days may be the last heat wave summer days and your solar panels need it :)

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Maico Ha! I wish. :-)

  • @Jetjai
    @Jetjai 7 ปีที่แล้ว +1

    Hi, I'm adding a Solar system to my allotment in southern England and am finding your videos very helpful. I decided to get a couple of the Watt Meters that you use and have just received them. They came with a small plug that goes in the side socket but the instructions don't mention this plug and socket. I wondered if I could be cheeky and ask if you know what they are for? Thanks. Jeanette

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      +Jetjai The blue watt meters? If so you can power the meter from another power supply - it stops the meter taking power away from the thing it is measuring. It's not really necessary. Thanks.

    • @Jetjai
      @Jetjai 7 ปีที่แล้ว

      Adam Welch Yes, the Meters at 7:14. Thanks for that. The pins were out of line in the units and there was no info about the sockets. I took one unit apart and the build quality of the box is a bit 'iffy' The printed circuit board just floats about, it isn't fixed and I was worried about the soldered joints of the pcb touching the case and shorting. The only thing I had to hand was sticky notes so I put 2 sheets between the PCC and the case - 'belt and braces'! I shan't worry about the socket, onwards and upwards 😄Thanks, Jeanette

  • @jeffdombach7451
    @jeffdombach7451 6 ปีที่แล้ว

    Have seen the Richsolar 20 Amp 12V/24V DC Input MPPT Solar Charge Controller on Amazon?

  • @Farmer2492
    @Farmer2492 3 ปีที่แล้ว

    i just have a Question i have a ute canopy it has a 300 watt fixed solar panel on the roof and a Folding panel for when i pull up camping i will use that i have a 100ah AGM battery i run a waeco fridge and few led lights what am i better off using PWM or Mppt thank you

  • @taniksambo1969
    @taniksambo1969 8 ปีที่แล้ว +2

    cant seem to find this mppt controller in the USA ebay

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Tanik Sambo I've heard this. There seems to be a shortage or something. Sorry.

  • @RapidsVideo
    @RapidsVideo 5 ปีที่แล้ว

    Who is the manufacture ? Does the literature mention anything about load lighting times on/off ? This is what I would need it for.

  • @bavadiproductions
    @bavadiproductions 7 ปีที่แล้ว +1

    Hello,
    Would this safely work with a 7S 18650 pack?

  • @bosdad7
    @bosdad7 7 ปีที่แล้ว +4

    what is the 10amp rating for ? is that for input or output ?

    • @potc420
      @potc420 7 ปีที่แล้ว

      bos dad usually that's a in/out rating. It can handle 10 in and 10 out. Lots of people don't understand mppt fully and they think they can load them right up on the "in" side (150v in @ 10a) the problem is 150v @ 10a is 1500 watts and a 10 amp controller can only handle 120 watts

  • @raisagorbachov
    @raisagorbachov 4 ปีที่แล้ว

    How well would this do on a cloudy day with little to no sunshine?

  • @mattburrows2615
    @mattburrows2615 7 ปีที่แล้ว +1

    There seems to be different versions of this unit. Noticed yours says v1.4 mine has a red circuit board and says v6.0
    It has two separate 100v CAPS (different spots on board) and no visible temp sensor.
    Raises a number of questions.

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      That's interesting. I hope the redesign was for positive reasons rather than cost optimization or reduced functionality.

  • @georgebaker8108
    @georgebaker8108 ปีที่แล้ว

    can't find it anywhere

  • @jimthvac100
    @jimthvac100 6 ปีที่แล้ว

    I wish you had drained the battery down before hooking this charge controller up. It will be hard to test when it is hardly putting out any power to the batteries. There is not enough load, Your comparing power in to power power out but the device itself will use some power to operate. I believe you made two videos testing this charge controller and in both cases it appeared you were attempting to charge a fully charged battery. The test results of not enough wattage out compared to wattage in may have to do with the charger unable to put out any more charge to the battery.

    • @AdamWelchUK
      @AdamWelchUK  6 ปีที่แล้ว

      I do drain a battery before I test solar charge controllers and I often try to put a lamp across the battery to help keep the voltage down. It's not always very easy though - small batteries are quick to discharge so I can test properly, but they are also quick to charge back up again. Large batteries take an awful lot of time to discharge sufficiently, and then making the video takes a lot longer when I'm trying to test the controller at all it's stages. Sorry this one didn't tick all the boxes for you.

    • @jimthvac100
      @jimthvac100 6 ปีที่แล้ว

      Adam Welch lol actually I really enjoy all of your testing. You do a very nice job. And I appreciate your well put together videos and you are quite articulate. It was just this controller I was wondering about. I was trying to decide weather to drop some cash on it. I know it is not that expensive.

  • @joycemckenzie9567
    @joycemckenzie9567 6 ปีที่แล้ว

    where did you get the usb lamp? That's cool

  • @brianlink391
    @brianlink391 4 ปีที่แล้ว

    Would have done the test on a 50% SOC battery

  • @markskise
    @markskise 6 ปีที่แล้ว

    What hapened if i connect to input 50.v 1.a from solar panel to the (dc dc 600W step up/down coverter) (gs-50 amorphine), and i set in output 14.v for charging car batery block? This stil works? How much A power i get? can you tested pls :)
    ?

  • @luckydubeinrc5165
    @luckydubeinrc5165 9 หลายเดือนก่อน

    50 % eff not bad ? what would be a good eff % ?

  • @Mosolarfan
    @Mosolarfan 8 ปีที่แล้ว

    after checking out the specifications for that controller, it appears that it has a single charge profile set to 14.7 volts that is non adjustable. not a good controller in my opinion, even flooded batteries are a major cost of any system and will wear out soonest, so money is well spent on charging them properly for the longest life. 3-4 stage charging will greatly extend battery life

    • @vylbird8014
      @vylbird8014 8 ปีที่แล้ว

      Can you tell me more about this 3-4 stage charging? I have designed my own PWM charger, and want to make sure the charge profile is optimal.

    • @Mosolarfan
      @Mosolarfan 8 ปีที่แล้ว

      this is for lead acid batteries only!
      stage 1 is bulk, condition is batteries discharged. batteries are charged with max current,amps until voltage reaches a set point.
      this set point is adjustable on some controllers, preset on others.
      stage 2 is absorb, current is regulated to maintain the afore mentioned set point so that the battery is not over charged. this is done for a set amount of time usually 1-2 hours. again adjustable on some preset on others. some controllers a current flow design so when the flow is less than say .5 or 1 amp the battery is full, regardless of time and is not adjustable.
      stage 3 is float, again current limiting to maintain a constant voltage, pre set or adjustable.
      stage 4 is equalize, this is NOT for sealed jell batteries equalize is a controlled over charge which balances the individual cells and helps remix the electrolyte. also a timed operation.
      battery manufacturer will supply the voltage set points and current limits and most will be a little different, rule of thumb a little under is safer than over.

    • @vylbird8014
      @vylbird8014 8 ปีที่แล้ว +1

      The Left Hand
      Yep, that's pretty much what I programmed, except I didn't use current limiting - the panels can't possibly supply more than 10A even under ideal conditions. But it's all defined in software, so easily changable.

  • @SigmaWorksSW3D
    @SigmaWorksSW3D 7 ปีที่แล้ว

    hi, try out this. aliexpress search (Excellent Relay Module DC 12V Relay Switch Control Board Module Relay Module Voltage Detection Charging Discharge Monitor Test) check out these ones for your 18650 battery overcharge protection ... im thinking to try by myself and it should work. btw u have done great job on your 12v shed :)

  • @miteshdhanani
    @miteshdhanani 5 ปีที่แล้ว

    Can we connect it with 3w 6v solar panel

  • @jhill4963
    @jhill4963 4 ปีที่แล้ว

    any radio static , i dont see any fairite chokes.

  • @butchziesmer6663
    @butchziesmer6663 5 ปีที่แล้ว

    MPPT Charge Controller - CPT-LA10 Where can I purchase one ?

  • @rethinkscience8454
    @rethinkscience8454 5 ปีที่แล้ว +1

    Any stray radio interference results

  • @dominik8040
    @dominik8040 8 ปีที่แล้ว

    Hello, can You make macro photos of pcb with IC numbers or list them here? :) Nice converter :)

  • @istubed
    @istubed 5 ปีที่แล้ว

    4 holes above the uc, is that serial port connection?

  • @patrickreddish8063
    @patrickreddish8063 7 ปีที่แล้ว

    any chance you can test the - Ming He MPT-7210A?

  • @stevemcgowan3017
    @stevemcgowan3017 5 ปีที่แล้ว

    Hi Adam just seen your mppt budget test as I have just a 100 watt panel on my campervan running into a pwm controller .gives about 1 to 2 Amps usually but my waeco fridge is on constantly as separate leisure battery gets charged from dc to dc charger off engine daily.ive fitted old can battery in parallel to fridge battery to give extra current .would a cheap mppt improve things ?steve.

  • @amalgamatedrick5975
    @amalgamatedrick5975 10 หลายเดือนก่อน

    Where can it be purchased?

  • @brianfindsall
    @brianfindsall 8 ปีที่แล้ว +1

    Hi I,m new to all this and am thinking of converting a mers sprinter into an rv and would like to run small fridge freezer, led lights, flat screen tv, and my laptop........could you tell me what kind of solar system would be best and what mppt would be good for me. i would be fitting flexi solar panels, but not sure how many i would need. but it would be used daily/nightly and fridge freezer would be constantly on....quite often......if you cannot advise thats ok....i,m still in the info tec gathering stage at the moment. giving it lots of thought so i get it right first time (if possible) lol......any info would be really welcome from folks out there........you can never get enough advice i say.....Thankyou.....great vid by the way...good review,,,but i,m sure i will be wanting much better quakity than this one being reviewd

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      Hello. I'll try to help as best I can but although I have a caravan and a solar shed, I haven't really mixed the two, so I don't go off the grid in my caravan if you follow.
      Most sprinter conversions I've seen will have at least 200 amp hours (Ah) of deep cycle batteries - you'll need sealed most likely if they are going to be in the living area. Have a pure electric fridge freezer may possibly require more - it depends on how efficient it is. I know that the 12v option on my caravan fridge barely keeps things cool but that is over ten years old. Gas and AC are far better. Of cause you're not forced to go with lead acid batteries, you could look at lithium, but this means you would need to use a lead acid charge controller and adapt it, or find a lihtium charge controller (of which there are very few).
      Sticking flexi panels straight to the roof isn't the optimal solution as in winter you need the panels at a more steep angle to catch the best sun, so to compensate you need to add more panels. If you are living in the van through the winter off grid I would probably start with 400 watts personally with a view to adding more. This may well be overkill in the summer when the sun is higher and closer but that's just the way with solar.
      You don't have to go with MPPT. It will charge your batteries more quickly in the morning or give you a few more amps to play with when you are drawing current in the day but if you're out all day (allowing your batteries to charge slowly before evening) there may not be a huge advantage. In winter if your panels can't get up to a decent voltage MPPT may not be much advantage (where as saving the money on the controller and adding another panel might be better).
      Personally I am liking my EPEver Tracer A charge controller (I've reviewed it here th-cam.com/video/zTBrktPQdCM/w-d-xo.html )- but we're just moving into the first winter with it in service. However it has got more watts attached to it than my previous MPPT controller last winter. You'll obviously need to match your controller with the amount of solar you have (or get a bigger one for later expansion. Bare in mind that your van will probably use the chassis as ground (the negative return to your starter battery) and the EPEver (as well as many others) is a common positive design. That means you need to be careful that the wiring is well isolated from the van - don't wire your solar setup to the chassis.
      The other option is getting a split charge, charge controller. They're specifically designed for charging leisure and starter batteries. However I have no experience of these, although there are a few on the market.
      Hopefully that's given a few things for you to think about. If I'd be dealt a different set of cards I might quite like to live the van life myself.

    • @brianfindsall
      @brianfindsall 8 ปีที่แล้ว

      Thankx for all that feedback Adam, much appreciated. Although i am not wealthy by any standards, The solar power with split charger built in are one thing i am willing to spend on, I would much rather go for overkill bigtime rather than have to skimp on power to often. I am planning on using a split charger,,,,,,i also like the idea of gas fridge providing i can find an adequate one, and i was thinking of useing six to eight solar panels....i think i could do with finding a plan similar to my needs otherwise i might get it wrong.....i am quite handy with the tools and small elctrical jobs but i think a good plan might be what i need, along with a list of components......i would feel safer that way i think.....thankyou for taking time to reply mate. Really do appreciate it, Regards Bri

    • @potc420
      @potc420 7 ปีที่แล้ว

      brianfindsall my advice would be don't go with 12v panels. Idk how it is where you live but in Canada 12v solar panels are 2 to 3 times more money than regular grid tie panels. If you use a mppt charge controller you can use any volt panel and hook it to a 12v battery bank. Panel prices around here are nuts! 12v 100 watt panel from canadian tire is 349 sale price (regular 549) Or you can get a 290 watt 35v panels for 203 bucks

  • @immrnoidall
    @immrnoidall 4 ปีที่แล้ว

    on mine, i got the same voltage out as i put in.

    • @AdamWelchUK
      @AdamWelchUK  4 ปีที่แล้ว

      If your battery is well charged then generally mppt isn’t used.

    • @immrnoidall
      @immrnoidall 4 ปีที่แล้ว

      i remember putting in 24 volts and the voltage into my low ,11v +/- battery climed up to 20 volts before i shut it off. i did it a few times. maybe i will dig it out of the pile and revisit the situation. it did have a coil in it.

  • @jomanjy09
    @jomanjy09 4 ปีที่แล้ว

    Thank you for the video.
    I opened a cheap what advertised as MPPT Charge Controller and it doesn't have inductors. Does this mean it is not MPPT? Is there anything else to look for in the component to tell if it is MPPT or PWM? Thank you

    • @AdamWelchUK
      @AdamWelchUK  4 ปีที่แล้ว +1

      There has to be a dc to dc converter inside an mppt solar charge controller (so it can convert the panels maximum power point voltage to the battery voltage) and that needs an inductor. You can test by testing the voltage of the panel and the voltage of the battery. There should be a reasonable difference. Do this test on a discharged battery though (or one with a reasonable load).

  • @shuttereff3ct593
    @shuttereff3ct593 7 ปีที่แล้ว +1

    Do these cheap mppt chargers have low battery voltage protection (over discharge) on thier load ?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      +Shutter Eff3ct Yes this one does I believe. 10.5 volts on a 12v system.

    • @potc420
      @potc420 7 ปีที่แล้ว +1

      Adam Welch my problem is 10.5 is waaaaaaaaaay lower than I would ever take a battery. Most of these controllers the highest cut off you can set is 10.5. Your battery is destroyed by that point. I managed to find one you can set the cut off at 12.05 (50%) it's still lower than I like to go but not too much damage occurs from the occasional 50% cycle

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      +potc420 I agree, but it should only be the last line in defence really. If you're prepared to put a little bit more money into a charge controller you can get one that allows you to program all the parameters and you can set the LVD exactly as you want it.

    • @potc420
      @potc420 7 ปีที่แล้ว

      Adam Welch yeah what I meant to say was most of these cheap controllers lol.
      Any decent controller will have a lot more flexibility. My "mpp solar" brand controller is in the decent area. It's not spectacular but it's definitely decent!

  • @midnight7297
    @midnight7297 7 ปีที่แล้ว +1

    Hi. I'm trying to get into this hobby. I plan on getting something like this, to power a PIR and led lighting in a shed.....maybe other uses too. The USB and 12v power outputs sure look handy. I'm looking at using 18650 batteries instead of lead acid batteries however.....if I'm thinking right, it should be safe to use this to charge safely 4x18650 (or 3 x 18650) in series without causing them to overcharge? Reason I'm asking is your output meter is showing the region of 13.51v?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว +1

      +Midnight Hi. Personally I don't think 3 or 4s lithium packs work on a standard 12v solar charge controller. I explain my reasons for this in this video: th-cam.com/video/YoH7V56RtkM/w-d-xo.html I have been running 7s on a lead acid solar charge controller however for some time now.
      If you want to use 3 or 4 lithium cells in series I'd suggest getting a charge controller where you can adjust the charging parameters.

    • @midnight7297
      @midnight7297 7 ปีที่แล้ว

      Thanks Adam, I'll check the video out now. A steep learning curve when haven't done much in electronics since schooldays lol....I'm fascinated in it now but so much to get head round

    • @midnight7297
      @midnight7297 7 ปีที่แล้ว +1

      oh I also just realised too that I may occasionally be able to source some UPS batteries from work, so they should come in handy, assuming they run at 12v :) didn't think of those at first, but yeah I'll try the car battery first at least while messing

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      +Midnight I use UPS batteries in the shed. They're proper deep cycle batteries generally. Most UPSs use two 12v batteries in series. Businesses often have a routine replacement of the batteries in UPSs - they're pretty cheap and if they do fail it's fairly costly.

    • @midnight7297
      @midnight7297 7 ปีที่แล้ว

      we occasionally replace APC ups's when they start to fail at work. I believe they are 2x12v. I wonder if, like when laptop batteries pack in, may get lucky in that when one fails the other may be good....I may hopefully be able to salvage a few that way :)

  • @mr.timjohnston546
    @mr.timjohnston546 6 ปีที่แล้ว

    if the price is to good to be true, then you know the rest of this sentence.

  • @fred8565
    @fred8565 7 ปีที่แล้ว

    hey adam like your videos man. but how do afford all these equipment?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      TH-cam adverts and affiliated links help pay for most of it. :-)

  • @ConorFenlon
    @ConorFenlon 8 ปีที่แล้ว

    How much current can both 5v sockets supply when both in use? Do they share the same current output to their respective loads? Or are they independent of one another?

  • @emmanueltavora8642
    @emmanueltavora8642 8 ปีที่แล้ว

    Hi, friend! Thank You for the video!
    Where do I buy these watt meter?
    Thank You!

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Emmanuel Tavora EBay!

    • @emmanueltavora8642
      @emmanueltavora8642 8 ปีที่แล้ว

      Please send me the link of the watt meters and the plugs, thank you!

  • @ChrisDIYerOklahoma
    @ChrisDIYerOklahoma 8 ปีที่แล้ว +2

    Good test/review. The only thing I don't like about it is...how do you set the voltage setpoints for the battery? Some batteries are very specific what voltage they charge at. 10 amps...on a 24v system...that is 240 watts. So, on could hook up three 100w panels and push 10 amps into them...if it doesn't burn up first. Does it current limit?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Chris DIYer All parameters are fixed I'm afraid. Batteries are self current limiting to a degree, but this will limit as the voltage approaches a set point.

  • @doitalltronics
    @doitalltronics 7 ปีที่แล้ว

    Hello Julian I am new to this. forgive me if my question seems like a no-brainer. if I use this solar charger, would I still need to put a protective circuit board for my lithium batteries?

    • @AdamWelchUK
      @AdamWelchUK  7 ปีที่แล้ว

      +DoItAll-Tronics I'd suggest the answer is - probably. Unless you are creating large packs of lithium cells which tend to balance themselves quite well the you need something to actively balance, or you need to keep a very close eye on them.

  • @lektrokits6178
    @lektrokits6178 8 ปีที่แล้ว +1

    i got this a few months ago, it does appears to be better than the previous pwm controller i used. The most amp I ever get was around 5A-ish, from a 2x100w solar panel (tried both parallel and series - parallel gives more power). Can I expect to be able to get close to full power / wattage out of these solar panels (so using a mppt controller I shud get close to 16A for 2x100w panels) ?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      I'd hope you'd see close to full power under a perfect sky with the panels on axis and a battery that is well depleted. There will be some losses inside the charge controller but you should come close.

    • @lektrokits6178
      @lektrokits6178 8 ปีที่แล้ว

      is it safe to short circuit a 200w panel (for a short while) to make sure I dont have problem with connections and or cabling, my cables can handle I think -or- theres a better / easier way to do that (all i can think of is having a volt-matching ultra+supercap s)

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      Most panels are supplied with the stats for their short circuit current and their open voltage. Solar panels don't hold energy (like a battery) they produce energy when they are in the correct environment and held in the right part of their power curve.
      So yes, it's generally safe to short circuit a solar panel - there may be a slight crack while the panel goes from providing lots of voltage and no current, to providing lots of current but no voltage. In both open and closed states no power is being produced (as P=IV) but as it transitions from one to the other there will be a short time (micro/nano seconds?) when it is producing power.
      If it worries you, pop something over your panel to reduce its power capability as you short it. I plan to do a video where this is covered very soon.

    • @lektrokits6178
      @lektrokits6178 8 ปีที่แล้ว

      Great, thanks for the uploads, definetely looking forward for that

    • @potc420
      @potc420 7 ปีที่แล้ว

      Lektro Kits I was hitting 5.5 amps using 1 - 100 watt panel and a cheap 10 dollar pwm controller

  • @LITTLEEXPERIMENTCHANNEL1
    @LITTLEEXPERIMENTCHANNEL1 5 ปีที่แล้ว

    Are the capacitors in series?

  • @christopherjump236
    @christopherjump236 6 ปีที่แล้ว

    Hi Adam. Could i ask how you cope during the winter when the temperatures drop? Do your batteries struggle when the temperature drops below 0 degrees celsius?

    • @AdamWelchUK
      @AdamWelchUK  6 ปีที่แล้ว

      I've been thinking about this recently - more around my lithium ion pack rather than my lead acid one though.
      The short answer is yes, they will suffer a little - it's a chemical reaction which temperature can effect. However my lead acid batteries are good down to about -20c I think. My tracer charge controller actually increases the voltage it will charge to when the batteries are at a lower temperature. This helps keep them fully charged in more difficult situations.

    • @christopherjump236
      @christopherjump236 6 ปีที่แล้ว

      Adam Welch thanks I'm using recycled 18650 batteries in a 3s5p config and recently the cold weather caused 3 cells to die. Be interesting to see if some sort of insulated container and your heating element idea could be a simple solution?

  • @maicod
    @maicod 8 ปีที่แล้ว +1

    Adam what is this USB-load-device with 2 high power resistors and can even be adjusted to create more load ?

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Maico It's a cheap resistor based load. Roughly one or two amps. You can get them very cheaply on eBay. I prefer the constant current transistor based loads really but I only wanted a quick test.

    • @maicod
      @maicod 8 ปีที่แล้ว +1

      +Adam Welch thanks I didn't know these existed in this form. I found them on Ebay now

    • @maicod
      @maicod 8 ปีที่แล้ว +1

      +Adam Welch doesn't this one look exiting to you, I think I'm ordering that one: www.ebay.nl/itm/USB-DC-Electronic-Load-Module-15W-3A-Precise-Adjustable-USB-Discharger-/131936506062?hash=item1eb80750ce:g:TgoAAOSwFqJWnYjN

    • @AdamWelchUK
      @AdamWelchUK  8 ปีที่แล้ว

      +Maico Actually I do have one of those and that's a good price. It's a handy 3 amp load.

    • @maicod
      @maicod 8 ปีที่แล้ว +1

      ***** ok thanks I will order one

  • @donwhyte9855
    @donwhyte9855 5 ปีที่แล้ว

    Hi Adam do you have any recommendation for a cheap but reliable 12v 20A mppt controller (cheaper than the EPEVER )? I viewed your videos about the UEIUA range but it looks like your tests and the many comments show that quality control is questionable on those.

    • @robertovalinhos27
      @robertovalinhos27 5 ปีที่แล้ว

      pt.aliexpress.com/item/MakeSkyBlue-30A-40A-60A-MPPT-Controlador-de-Carga-Solar-para-12-V-24-V-36-V/32950731408.html?spm=a2g03.11010108.06001.10.25905d71q77Vhf&pvid=518434a8-62d3-4eac-a5ff-61124b7d3f80&gps-id=pcJustForYou&scm=1007.13562.109986.0&scm-url=1007.13562.109986.0&scm_id=1007.13562.109986.0

  • @ek9772
    @ek9772 6 ปีที่แล้ว

    Which of the MPPT units you have reviewed would you recommend to heat water with a (150 or 300 watt) DC heating element with three or four 315 watt solar panels?

    • @thedavesofourlives1
      @thedavesofourlives1 3 ปีที่แล้ว

      none. Sounds like a terrible idea. Also, batteries?