Cheap Lithium Battery Charger OSKJ Buck Converter (Constant Current-Voltage) Review-Test
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- เผยแพร่เมื่อ 2 มิ.ย. 2024
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01/26/19
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Cheap Lithium Battery Charger OSKJ Buck Converter (Constant Current-Voltage) Review-Test - แนวปฏิบัติและการใช้ชีวิต
That's a PROTECTED lithium cell you forgot to mention.
It's the battery cell protection that stops the charging, NOT the buck converter.
With an UNPROTECTED cell it will not fully stop charging and it will enter in TRICKLE charge mode which is very bad ( as you also mentioned ) for lithium cells.
Good job, keep on going!
Great video, just the tests I have been looking for. Thanks for sharing this video!
You are most welcome. I am glad to know I could help you. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
I would like to comment to others I started doing business with you and my experience is stellar I absolutely love the fedx and communication.I had a problem at start and your help and communication to help me was spot on I am to continue and highly reccomend your crew and you for your products and service.thank you for your honesty and getting me started.
Very clear and concise video without repeating the same info! BZ!
Very good video. After a 50 year break I took up electronics as a hobby again, things have changed - just a bit. I bought my first one of these bucks about 2 years ago. So far after doing all sorts of terrible things to it it's still going strong. I even used one as the regulator for 12 TIP35C power transistors, sort of buck linear 'thing. I did change the blue trimmers for proper pots.' Just an experiment and it worked fine. I have one as a battery charger - 12 V car & lithium. I have most of the main ones that are on EBAY and I rate this No1, better than the 300W 20A - my first one popped. I always use a 60mm fan though.
I agree. It is a very forgiving unit and does work well. Thank you so much for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
Great video. I learned a lot. One thing I'm curious about is what would happened if you try to charge the battery with the battery itself with the buck converter.
Pretty smooth adjustment cv and cc i love this thank u for this
Now i just found a charger for my DIY project. Thank you Richard!
please use, 24volts 3Amp smps or RO adapter, it will give you best results, Thanks
Thanks for the video. I have been using these bucks for a couple of years now and so far they seem bomb proof. I'm afraid some of the claims on EBAY are exagerated. They are rated at 8A and seem quite happy with 36V input as stated in the data sheet for the XL4016. My only comment really is that I would not run one at anywhere near 8A without a fan. An LM2596 buck is very cheap to give you 12V. I have never used one for charging and I'll need that soon so your video is very handy. Regards from across the pond.
I would have liked to see the current draw on that 8 amp hour pouch cell when the charge cycle was complete.
Someone pointed out that the 18650 you used had a built in protection circuit that was actually responsible for the zero current draw.
Thank you soo much for rich content video, it answered a lot of question I heard about the about the cell's behaviour on CC-CV charging. Ndiyabonga kakhulu
Great video, you answered all of my questions. Thank you!
You are most welcome. I am glad to know I could help you. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
Very nice video, thanks for sharing all the information in your description.
You are most welcome. Thank you for watching, commenting and the kind words. I appreciate it greatly. I am happy to hear you value my work. All the best.
wonderful I was looking for the info on buck converter you answered my question's thanks
I really enjoy your videos ,I wish u would upload daily or every other day
Doing my best to increase my output. Thank you very much for watching and the kind comments. All the best.
Great video , I've got a 20 amp buck converter on the way via Ebay, plan to use it to step down a 18v lithium tool battery to 15v to run a portable pressure washer , only a 75w motor so not really a high pressure washer..... the original battery is a 4 cell 3.7v lithium in series. The built in BMS seems to constantly drain about 16mA so the battery is dead in a few days, guessing only 2000mAh cells . The tool batteries I have are 4ah and 6ah so should get a decent run time hopefully. My DC clamp meter died but guessing the motor draws about 5 to 6 amps. Noticed a fair efficiency loss from your MPPT and amp meter looking at the watts section at the bottom of the displays but still quite impressed on how the 8amp buck converter went.
You are most welcome. Thank you for watching, commenting, the valuable feedback and the kind words. I appreciate it greatly. All the best.👍😀
thank you for this video, learned a lot. appreciate your time
You are most welcome. Glad I could help. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
Dude, it’s tremendously fascinating, thanks . 🙏🙏🙏
great video. Could I charge a 12v 130A lithium battery with this buck converter via alternator?
Nice video. I wish to charge my 24v starter batteries on my camper van from my 12v solar system. what's the best way to do this. can I use this little board. I'm thinking out put from charge controller to this board then to batteries. if this is correct what Amps should I set it at and what voltage. ty
Great stuff, question...do you have the positive and negative on the power- out- connected at all times and just simply switch probes of multimeter back and forth from amps to volts. While changing dial on multi meter too?
Great videos . I was trying to get one of these to charge li-on 4s and was setting it up for a 100Watt solar panel , first thing I noticed was it would not work at 18 volts input so adjusted it to 20 volts then it started working so then backed it off to the 18 volts needed and it still was working fine I then removed all the input power waited a minute for caps to bleed off then reconnected everything and it now works fine so some of these dc to dc converters might need a higher input voltage to set it up before you set the final voltage needed.
You're most welcome. Glad to hear about your positive results. Comments like this make my DAY! 😁️ I'm glad to know I could help you and that you got value from my work here. Thank you for watching, commenting, subscribing and the very kind words. I appreciate it greatly. All the best.👍😀
Really great video. I have a question, but short story first. I got scammed and ended up with a fake Dewalt drill. The drill worked great when I first used it until the batteries died. Tried putting them on the charger, and the charger is no good. Opened it up and there's some crappy little converter inside. I am wondering if I could take one of these OSKJ Buck Converters and possibly replace the module in the charger with it? The drill says its a 24 volt 6amp charger. Opened one of the batteries and there is cheap lithium ion cells inside it but all i could see is 1300ma. Your thoughts? Thanks in advance for your advice.
i think the transistor which is upper side is converting the current but which is lower part it is voltage that is why usually you get higher temperature over the current transistor
Richard, I’ve been using a solar panel with a gel cell for external power to my 6V game camera? Could I use this converter with a 2x2 LiFePo4 bank and a 10W solar panel? Max output on the panel would be around 500ma. I’m concerned about charging with a solar panel and using at the same time. Thank you. Mike
Thanks for interesting video. Where you show current level dropping when set voltage (4.2v) is reached, what triggers current drop. Is this a feature of all buck convertors or do I need to purchase one specifically for charging Li-ion?
Hey! Richard, your video is awesome, please tell me one thing, could I use this module to charge 12 volts 32AH battery with 3-4 Amps of current, ???
Make a video of using a buck converter to charge a LiFePo4 cell with a 5-10W solar panel. Or, to maintain a fully charged cell. What do these buck converters do when input voltage drops below desired output voltage?
(Just tested with some cloud cover. The voltage on the output pins does not climb above that of the battery. Amps is showing 0.0. ). Hopefully I can get some full sun today)
very good video.i have ordered this for my solar. to protect my electronics as my volts on my mppt can rise to 16.8 once a month. to protect my devices.. thank you keep up the videos
You are most welcome. Very good circuit for that function. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.
Thank you for your well explained tutorial. It appears you also have a voltage regulator with a red digital readout that is adjustable but I don't see a link to it. Could you possibly provide one?
Thanks for the question. I don't think my original buck step down converter is being made anymore. They switched to a digital board with a potentiometer (variable resistor like a volume knob) but other than that they seem to use the same XL4016E1 12A 180KHz 40V Buck DC to DC Converter MOSFET IC Data sheet here: bit.ly/37AxQ81) Here is an (Affiliate link. Helps me on TH-cam and does not cost you any extra if you use it) from eBay for a similar regulator: ebay.to/3xAtxUF I have had very good luck with it and it does handle up to 5 Amps but you may want to mount a fan to it or bigger heat sink if you are going to push it at 5A. Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
17:07 "The current is really high" - it's because an ammeter resistance is near zero, so without a load in the output you made a short circuit
That's the point. You can then set current limiter to any value below short condition.
Fabulous Presentation :-)
You can always add a better heatsink. That is not a MPPT Solar Controller no matter what it says on the case and trust me, I wish it was. Take it apart and look for an inductor. I do love these kinds of videos. Liked and subbed.
What are you talking about I can see the inductor it's right next to the potentiometers? No need to take it apart.
I must have missed the claim of it being an mppt I agree it isn't.0
Very good knowledge
I was going to buy one of those mppt 7210a's , but the reviews I have seen said it would only work with 24v and up, but it looks to me that you are doing just fine with it at less than 12v input and 12v output. Even if it won't work that well for a solar panel to charge 12v batteries, it would be great for a power supply control and charger for lithium Ion batteries - would that be your thoughts on that? If so, I think I will pick one of those up. MOSTLY I want it because it is the first I have found that is my favorite color - I just love the color LOL...
I love the MPT-7210A Solar Regulator Charge Controller At Ebay: goo.gl/65T6ZF At Amazon: amzn.to/2MT7ulO I think it is a very versatile unit and I may do a video on it and how I use it too. It essentially is a battery charger so I don't see a problem in using it as one. Thank you for watching and commenting. I appreciate it greatly. All the best.
I learned a lot from your setup. Time 24:14.
Thank u!
You're most welcome. I'm glad and happy to know I could help you. Thank you for watching, commenting and the very kind words. I appreciate it greatly. All the best.👍😀
Nice test thanks, do they also make these for higher amperage battery pack? I have 7s 20p 18650 used cells average 2100 mAh ea.
You are most welcome. As long as you set it correctly to supply the correct voltage and amperage for your battery I can not see why it would not work but verify that it can do what you require by looking at the specification for the device and your battery or cells depending. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
Thanks for the info! I got one recently.
The red light from LED means it’s current limiting at that moment and blue means it’s voltage limiting.
There looks like a LED missing on the circuit next to negative output/input connector. What is that LED for?
ON my module the LED going from red to blue means it has gone charging (red) to charge completed(blue). Thank you so much for commenting and watching. I appreciate it greatly. All the best.👍😀
May I please ask about 5v input - will it work?
(eg. USB port Vin, Vout 1.4v charging NiCd battery)
Which circuit is appropriate for cc 2A and cv 12v output . Input is fluctuating voltage from 10v to 100v
What would you recommend for AC->DC charger for a 51.2v 100Ah LiFePo4 battery?
Great video. One quick question. Does the amp meter disconnect the line when it reaches the voltage or does the buck converter turn itself off ?
The buck converter does that job by it's self. It's really a great value for a charger. Thank you for watching, commenting and liking. I appreciate it greatly. All the best.👍😀
Does the unit stay set with different inputs? Say I have 2 different power sources, 12v and another 14v. Do I need to set the output for each unit or is the output not related to the input?
You the man Rich!
During hazy days a solar panel can show say 20v but will produce little or no current. When one drops down to lower voltage due to being in shade it will produce no real current.
Hi. How many amps are needed for this circuit to output an 8 amp output?
I tied spinning the Voltage pot like forever, and still can't get the output voltage over 3V (with 17.8V input). What am I doing wrong?
I struggle to understand electronics and especially lithium ion batteries. What I have done is set up a way to charge a Bluetti 70 using the 12 v battery in a 2008 2nd generation Prius. I have purchased a dc-dc converter 12V-24V 10 amp 240W and set it up to clamp it on the battery and plug it into the Bluetti for a faster recharge. Now I realize that I have to manually insure the battery doesnt get to 100%. Does the buck converter work as a better alternative while being able to fast charge the bluetti ? Another concern is to not kill my car battery. Any feedback is appreciated.
I'm not sure you can fast recharge the Bluetti 70 if you are using the MPTT port as it probably already has a circuit to maximize charge built into that port as it is charging the internal Lithium battery pack. Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
Pretty amazing buck , but will it charge 4s 3.2v 30ah lifepo4 batteries 12.8v with 100watts 23v 6A solar panel which im gonna lower down to 12.8 v to get 9amp power from solar panel ?
It is within what they say it should do "DC-DC CC CV Buck Converter Step-down Power Module 7-32V to 0.8-28V 12A 300W USA" so I can't see why not? Thank you for watching and commenting. I appreciate it greatly. All the best.
Can a number of this Buck Converter connected in parallel to bring up more current output ? For safety reason I assume a blocking diode should be added to the positive connector of output side to avoid back flow current from other buck converters.
What you state may be possible but I don't have the electronics background to confirm if they can be used in that way. Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
@@richardlloydusa You are so humble ! a layman could not make a good presentation of electronic product like you ! great work !
Thank you Sir. These chargers are pretty cheap to experiment with. Give it a try with just two of them and see what happens. Best case scenario is that it works as you are thinking (Which I see as likely) and if it doesn't you get to keep both parts. LOL, If I had two I would probably give it a shot. All the best.
can you use this instead of a mppt solar charge controller and connect it directly to a solar panel
Thanks for the review. Will follow your instructions to make one. However, the brand name is QSKJ not OSKJ.
You're most welcome. I'm glad to know I could help you. Thank you for watching, commenting and the very kind words. I appreciate it greatly. I will have to get my magnifier out, LOL. All the best.👍😀
Can it be used as a ups configuration? charging it and using it at the same time.
This helped. Thanks
I have a 25 amp 9.9v battery and i want to drop the output to 8.5v 15amp for a project using this converter. Do you think it can get the job done or am i asking too much from it? Any help would be great.Thank you
I think you are pushing it at 15 Amps on this device. Try something like this instead at Ebay: goo.gl/JLbkyY it's rated at 20 Amps. Thank you for watching and commenting. I appreciate it greatly. All the best.
this module can charge seal lead asid bttry?.
this module has overcharge bttry protection?.
the input can connect to solar panel to charge SLA battery?.
what min and Max (volt n amp) battery it can charge?
thankyou so much for sharing the set up process of the cc/cv converter is, it was extremely helpful
all the best from aus
You are most welcome. I am glad to know I could help you. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
THANKS FOR THE INFORMATION....HOW ARE 10 MODULES CONNECTED EACH ONE WITH A FAN FOR 10 18650 BATTERIES AND WITH WHAT VOLTAGE
You could do that. I think you would be better off with a BMS with which you can use one of these modules with: eBay(paid): ebay.us/UrPe6j Thank you so much for commenting and watching. I appreciate it greatly. All the best.👍😀
I couldn't quite make it out, but is that paper between the heat sinks and the power transistor and diode? Shouldn't they be mounted with thermal paste?
It's a typical of thermal plastic or rubber. I've seen it used in many circuits. Thanks.
Thank you for asking, I found out what it is, it is a Heatsink Cooling Thermal Conductive Silicone Pad you can buy them here on Ebay: goo.gl/z1dMHX
I glad I found u
You're most welcome. I'm glad to know I could help you. Thank you for watching, commenting and the very kind words. I appreciate it greatly. All the best.👍😀
"...how many amps coming out of it, currently." Haha
With full sun my solar panel was able to put 500ma into the battery pack which is a LiFePo4 set arranged in 4P. I set the output voltage to 3.60 and the current to max. When a heavy cloud came along the out volts would drop to that of the battery and amps to 0.0.
I plan on putting a boost converter on the battery pack to boost to 6V. This is to drive a game camera. So, Buck from solar panel and Boost to camera.
Wish there was a way to cutoff the Boost when the batteries drop to 2.8 volt.
Thank you very much sir.
You are most welcome. I am glad to know I could help you. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.👍😀
All I wanted was to convert 24 volts to 12 volts to use in my motorhome to step down from 24 volts to 12 volt so to use 12 volt water pump, LED lights and cell charger. I was sold this as discussed ... what do I know about electronics and
your explanation !
Also, don't have instruments for measuring.
When that red light came on then I knew all was not as it should be.
Just so bloody frustrated ... had no lights and water pump for weeks.
A simple plug in and use step down
should be available in these present times.
This is a constant voltage constant current charging circuit . It's function is to charge lithium batteries using CV/CC. As the voltage reaches the set amount the current will trail off so you can not use this circuit to supply power only without a battery. You can do it if it charging a battery but that's still not the best solution. You need a step down voltage converter only, without constant current. Here is an example of a small module XL6009 3A DC Buck Step Up Down To Adjustable Voltage Power Converter at Amazon: amzn.to/3zS4Y76 now this one is only good for devices below 3 Amps but there are larger converters also available like DC Voltage Regulator Buck Converter DC 24V Step Down to 12V 30A 360W at Amazon: amzn.to/3EYMMMA (Affiliate links. Helps me on TH-cam and does not cost you any extra if you use them). You can mix it up with various converters depending on what you need and where. I will probably do a video on these converters as they are very useful devices for DC conversion. I use them for power supplies all the time with my electronics. Stay tuned and good luck. Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
So what makes it turn off when the battery is charged?
Many thanks for sharing, great video and really interesting, will be ordering one of these units
You are most welcome. Thank you for watching, commenting and the kind words. I appreciate it greatly. I have links in the video description for it. All the best.
Great video, Thanks ! I have one of these buck converters. I'm thinking about using mine to charge my SLA batteries ranging from 7 AH to 18 AH. Looks like the manufacturer is recommending a charge current of 20% of C. And a charge voltage of 13.8. Your thoughts . . . . '73 Bob
I love this converter. It's efficient, pretty tough (I haven't destroyed it yet) and it does exactly what you set it to do and they are CHEAP! I know they will up to 12A and 24V so if it's capable of working within the parameters that you need go for it. Check the eBay link for all the specifications. Thank you so much for commenting. I appreciate it greatly. All the best.👍😀
Good Video well explained
Thank you so much for commenting and the very kind words. I appreciate it greatly. All the best.👍😀
Very good video perfect. You did not answer questions such as how do we charge automobile batteries?
What's wrong with using this model wet car batteries to charge? I can't believe you haven't done this test until now.
Doesn't the red light turn blue in water type car batteries when adjusted to the desired current?
I think the blue light will eventually turn on because the battery will draw less current as it fills up.
What is your comment on this?
I'm going to have to test it on my car battery but I think it "should" work as lead acid does use constant current constant voltage charging. I will have to look up specifications for lead acid charging. Here's a great resource for this: batteryuniversity.com/article/bu-403-charging-lead-acid Thank you so much for watching, commenting and the valuable feedback. I appreciate it greatly. All the best.👍😀
That was awesome video
You are most welcome. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.
Hey at 24:05 what is that device with relay??
Nice video!
Thank you. I enjoyed making it and I was very pleased with the module and it's performance. It's a GREAT charge circuit. All the best.
I have exactli same board like in your video but the current regulator is not working the POT both are 10K you have any idea?
Sounds like you received a defective board. I recommend returning it. Thank you for watching and commenting. I appreciate it greatly. All the best.
Will these be able to handle 12v battery to 12v battery pulling 200amps in between????? I wanna regulate the pull of voltage/amps between my batteries that my 3 car audio amplifiers will be pulling from one power battery to from main battery.
These are meant to charge batteries, so if that is what you need and are within the charge specifications you require then they will work for you. Thank you for watching and commenting I appreciate it greatly. All the best!👍😁
hello! can you try charging a car or a motorcycle battery with it?
I have bought 3 of those and I wanna be sure before I try it.
thank you.
I can not find anything to confirm it will work. I found this at battery university but again I can NOT confirm. goo.gl/5xWh77 Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
I Charge 2 o f 135A llifepo4 battery in parallel with a buck like this but it's the 20A version. It works as it should.
can i charge my 1.2V NiMH battery with this?
Will I give any indication when battery fully charged to 4.2V (CV) ?
The LED will turn from red to blue. Thank you for watching and commenting. I appreciate it greatly. All the best.
Nice video. Can u recommend another buck converter that can handle about 80v thank u
Yes . There a excellent one ( DPS8005 ) 80v 5A buck converter
33$ only and it came with digital display and Bluetooth to control it with your smart phone or by your PC software through the BT or USB cable .
Max power 400w max volt 80v max current 5A
Can I use this to charge a LifePo4 battery with a motorcycle inverter? The specs of the inverter is 700W/50A, what kind of buck converter would I need?
The specifications for the device are available on eBay (See affiliate link in the video description). I use it to charge my batteries still. As long as you set it to the right voltage and amperage that is what it will deliver (within specs). Thank you so much for commenting. I appreciate it greatly. All the best.👍😀
I have one of these units, I had no idea it was for lithium cell charging, I think I bought it just for dropping voltage down for some reason or other. Damn excellent video, seems there is some controversy in the discussion on whether or not it does actually go to zero amps, can you confirm it will go to zero on non-protected cells?
Thanks for asking the question. I just tested this on my 4S battery pack and it did exactly what it was set to do. As it approached the cutoff voltage the current continually dropped til it reached the set voltage and at that point went to 00.00A and 0.000W on my am-meter. So the OSKJ cicuit I have functions exactly as advertised (Phew! You had me worried.) I have noticed that there are similar circuits out there with different colored PCB boards and some with only two capacitors claiming to do the same thing (No idea if they do or don't). But there may be counterfeit boards out there made with cheaper parts or substandard design. The other possibility is that the reports are wrong! Thank you so much for watching, commenting and the valuable feedback. I appreciate it greatly. All the best.👍😀
@@richardlloydusa thankyou so much for comfirming this, I guess it looks like this is what the circuit is designed for?
The one I showed is designed to properly charge lithium cells but it can be used as a step down buck converter as well. It's very handy and you can adjust the voltage and current to match your needs as well. Thank you so much for commenting. I appreciate it greatly. All the best.👍😀
@@richardlloydusa any tricks to setting voltage/current? Will try mine soon on lithium.
I mean do you have to adjust voltage/current after start charge or setup precharge?
Use a digital meter to set the voltage ahead of time before you connect the charger to the battery. You can also set the current with the battery connected and the multimeter set on the proper amperage setting (google how to check amperage on a digital multimeter if you're not familiar with the process). Checking amperage on the wrong setting on the digital meter can blow internal fuses. Once you have it all set the circuit will do the rest for you. Thank you so much for commenting and watching. I appreciate it greatly. All the best.👍😀
I like your videos ! I have the same exact converter I was able to hit 7 amps on a 12v 5a power supply not bad and doesn't get that hot ! But 76% efficiency is not that great :/
Thank you for the feedback. All the best.
How does it work. I have bought a buckboost as I want to make a power supply. Are the amps at the outputs side the same as the input side?
Im a but confused.
Hello where to get discharged battery
Hi richard how can I reach you?have a great idea for you!
Exactly what looking for "GREAT"
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If using multiple of these charging several cells 1 per cell but the cells are connected in series won’t it be a problem are the grounds isolated in these units?
My same thought??? It has two negative (-) connectors, one for input and another for output, so there is no common ground I guess!!!
You need a separate power source for each buck or they will have common ground.
The ground on the supply is connected to the ground on the output in these buck converters.
I'm building the system you are asking about.
Do you really have to weigh it and measure all sides? The rest of the video was not bad, just parts of it was to make a longer video
Plz show how to repair this Oskj bcz my output is same as input
Nice video informativr
I 'm glad to know I could help. Thank you for watching, commenting and the very kind words. I appreciate it greatly. All the best.👍😀
Good stuff. Thanks. I just ordered three of them to play around with.
BTW can you recommend a reliable vendor (Ebay or otherwise) to buy fresh 18650 cells. I've been ripped off on Ebay in the past so I'm a bit gun shy. (If you'd rather not that's ok).
Thanks
What capacity are you looking for and price range?
Get yourself on the diy powerwall facebook page there is a list of reputable cell vendors
Thank you. Will check it out myself.
Obviously the largest for the cheapest :-)
I'm joking.
Correct me if I'm wrong but I believe capacities have surpassed 2300mah - right? So maybe the 2300mah ones are a bit cheaper now? I'm not really up on the prices. What's a good price for a prime 2300mah cell? That capacity would be fine.
This is how I got stung before. Buying high capacity cells for what was obviously a ridiculous low price. I fell for the "too good to be true" scenario. Turned out they were re-wrapped crap. Cells were all garbage and about 600mah tops. I'd buy them from a place like Digikey but as far as I can tell they don't have any Lion batteries and if they do they probably won't ship them.
Any advice appreciated.
Thanks
P.S> Might be good to do a video on some of the traps like I fell for. Not that I want you to spend money on garbage to do the video with.
ratgreen. Just noticed your reply. A good suggestion but I'm probably the last person not on Facebook. So I won't be following up on that. Thanks for the suggestion though. Maybe there is a good forum??
Thanks
Can you study and let us know how to connect two units in parallel to get more current
Put a 10 watt 1 ohm resistor on the positive output so it always sees a load.
I just saw a video demonstrating load sharing by ...rf guy I think.
He was using regular converter not a constant current model.
The resistor was in series with the load.
Super cool 🙂
Thank you so much for commenting, watching and the very kind words. I appreciate it greatly. All the best.👍😀
Can yu please tell me sir..... i have 12 volt lithium batery.... theres no bms ... and no other circuit at all ... just the batery in series 12 volt so can i use this buck converter direct connected to my battery.... can i sir....
No, it will not works as Bms, please use bms first
I'm having issues. I set the voltage to what I want. Hooked it up
Didn't charge.
I adjust the other blue thing and the voltage goes down
I did blow the 10amp fuse on my Meter. But I got a step up
..
If the voltage is set to the current voltage of the battery it will not charge. It will only charge if the battery is NOT at the current set voltage. Thank you so much for commenting and watching. I appreciate it greatly. All the best.👍😀
how to charge 16.8v battery pack of 18650 4S2P with this buck converter??? help me please.
You would set the output to the required voltage and current you want to charge it to (check your manufacturer for the specifications) and connect it to your battery as required (usually to the output leads) but once again verify it with the manufacturers specifications for your battery. Thank you for watching and commenting. I appreciate it greatly. All the best.
@@richardlloydusa : let me try it. make a 80% charge battery. use some CC/CV buck converter. i made 4S2P with some difference battery. hope it safe for the battery and have balance the voltage of each battery. regards from indonesia.
Hey i want to work on same 4S2P battery pack, but unable to charge even single cell with this module. I have given supply from a DC power supply with limits of 12 V, 1.3 Amp as per cell specification. Everytime CC stage transfers to CV stage even battery cell is discharged to 2.8 V.
Nice....
👍
Hello Richar
my name is Bader I need your help ! regarding some 1865 battery can you help me ?
i use this module at 14v/5A to charge car batteries
Can i charge a 36 volt hoverbord battry
Not with this module, unless you have ~40v supply for it to "buck" it down to 36v. Otherwise you will need a boost converter instead.
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