JK-BMS 4S-Edition, Heltec shows wrong current, decode your Battery QR, Optimiser vs Microinverter
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- เผยแพร่เมื่อ 1 ก.ค. 2024
- While we're still offline after the recent weather event, I do this video with small stories and updates what is coming next here on the channel:
1:38 Welcome to new subscribers!
3:03 Ghost Voltages (and current) during night. See the videos here • 40V at Night from Sola... and • 40V 'Moon-Voltage' cha...
5:11 World Premiere if the JK-BMS 4S-Edition
5:52 Solar Optimisers and Micro Inverters
7:38 Heltec still shows wrong current
8:33 Battery cell QR code decoder www.gobelpower.com/lifepo4_de...
12:06 Who do I send the two Heltec Active Balancers to?
ZKE-Tech EBC-A40L Battery Tester:
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I feel smarter every time I watch this show!
Exactly the same happens to me as well 😁 Honestly, I come up with some questions, start investigating and think, hey, that's worth a video. Back to the garage... 😎
Qr code decoder is a vital missing piece of info will help us to know what we actually have bought!
Great video as always👍
Thank you!
Already 30.000 subscribers Andy!!! Congratulations 🎉🎉🎉 Hard work is paying back, and we learn and have fun.
What a great teacher you are!! Thank you Andy, still my preferred channel!!!
Thanks a lot Ricardo. I mussed it somehow while being offline 😒
Unbelievable!
you are the reason why I open TH-cam just to check if you have a new video. thank you sir Andy!!!
Thanks a lot Michael.
Hi Andy thanks for all your good stuff you do on you channel. It helped alot to get my solar system running with 6KWp and 15KWh battery along all Victron gear. And it probably helped prevent much self-induced damage and mischief ... :-)
Great to hear, Johannes. I was having so many questions myself and could not fiend the answers. So I thought I have to do all the testing myself. I'm glad I can share these info here and others can benefit as well.
I really enjoy your content. You cannot believe how much it has taught me. Thank you. Keep it up.😀
Thanks a lot Stephen!
Thanks Andy, this is what I looking for 🎉
Superbes duel !😅 hâte de continuer les épisodes et les futurs test ANDY.
Looked up my battery info! Great work Andy . Thanks a million
No problem 👍
Congrats for 30k subscribers and congrats for the two winners. Nice to see my name on the wheel.
Looks like autum is on its way to winter with a lot of rain in Australia. 😉
On the other side of the planet we had our first really hot days with about 30 °C in Germany, so we are going straight in direction of summer.
I had to water some parts of my garden and the little male goat of my neighbor was bleating and grumbling, because I successfully blocked the hole in the fence which he has used three times this day to visit me. Well, it seems that the clover on my ground tastes much better than the gras on the neigbours ground. 😉😁😂
Thanks for participating, Gunther. At least you had the right answer and were close!
There is usually no rain during this time down here but just blue sky. It is still 28° here during the day. Spoke to my mum yesterday and she is waiting for rain, said there was less than 1mm in May.
Animals always thinks the grass tastes better on the other side of the fence 😂 Our ponies are the same.
Look forward to seeing your tests of micro inverters
I've been looking into enphase and look forward to your test results and your conclusion
Looking forward to your future videos, keep it up 👍
Thanks Patrick!
Hello Andy. Don't worry about the lack of solar. turn the lights off, go outside and pat some of your little green friends.
Probably by the time you read this all the rain will be past and you will have full blue skies, like I have up here all this week.
Thanks Peter, we had great sunshine yesterday but it is rainy again today. What is going on!? And still offline of course 🤦♂️
Solar Optimisers are basically DC-DC boosters. So basically every panel outputs the same voltage disregarding shadows/dirt/temperature. Of course the current will lower. Not sure but it seems some of them have some kind of mppt algorithm before the booster section. In the end the panels will act like one huge panel, not anymore like a string or array.
The big question is: how high/low is the efficiency of those optimisers?
PS: the experimental part of this channel is what makes it unique and valuable!
Isn't it that they stabelise the current and not the voltage? Voltage makes no sense to me because the voltage of an pv cell is nearly stable in shadow situations. The problem is that a shaded cell isnt "delivering" any current. The maximum current of a string is defined by the weakest cell. If you look at the voltage/current curves of an mppt you will see that the voltage is nearly stable but the current is changing on the pv side.
Optimizers are trying to stabelise the current of shaded panels and reduce the voltage. So that stronger modules can deliver the full current 😉
The substitute model of an pv module is a current source.
@@OlanFantaziya probably you are right. So the optimiser does the buck conversion to the single panel to let more current pass through the string. But what happens when more strings become an array? One string with lower voltage will clamp the others down. Maybe the optimiser is doing both buck and boost conversion depending on where is installed. It could sense back-feed from the other strings and increase its voltage till back-feed is equalised. Probably they are more clever than a simple DC-DC regulator.
Btw, I'm sure Andy will uncover and dirty secret those "appliances" have.
@@photocromax as I know optimizers only work in single strings. Parallel strings would not make sense with optimisers
As a solar panel installer in Europe can say that optimisers works beautiful if you have shade from trees/satellite antennas/etc partially closing your pannels.
I have a lot of shading from trees in winter, so I was hoping to get something out of them. Partly shading is obviously where their strengths are.
I did wonder about your ghost voltage at night... seems it will remain a mystery. Congrats to the two winners. Enjoyed watching the wheel of death. Looking forward to the comparison/testing of the optimisers & microinverters. I have heard good things about microinverters but have never seen anyone go into any detailed testing. Haven't really researched optimisers so that will all be new to me.
Thank you. There is so much coming up on the channel, the list is long and growing.
Andy, try putting small water turbines in the down spouts. Lol. Thank you for sharing with us all. I really appreciate you.
Thanks Gary. I should do this actually. It started raining again after one day of sunshine.
Andy you are a perfectionist and there is nothing wrong with that and I have learned a lot of little tips eg the crimping of lugs on instead of soldering them on and many other things
Thanks a lot Vic. Just pick the good stuff from what I'm showing. I'm certainly a bit extreme in some aspects 😁
Great video as always. Special thanks for battery cell QR code decoder. I found out, that my new cells are declared as 302Ah, but by the capacity test and by the QR code they are only 280Ah. I've already discussed it with the dealer and got at least a discount :-) Thank you very much.
Thanks for the feedback. That's a great outcome. Were they sold as A grade cells?
@@OffGridGarageAustralia yes, they were sold as grade A and new. I think they are new, nice, looks exactly as yours, with welded studs. I measured they have about 295Ah, which corresponds to new 280Ah cells.
@@lubomirremiar8952 something is not right here. The two I checked measured over 304Ah.
They cannot sell 304Ah cells which have only 290Ah. If they had 302 or so ok but 290 is just to low.
So, only because you tested them and complained you got a discount.... How many didn't find out and got ripped off?
@@OffGridGarageAustralia yes, you are right. It's sad 😔
Hi Andy, I checked my codes on my 8 cells from Shenzhen Basen and they are roughly dated in line with the time of purchase. I’m very satisfied with them. Actually ordered a third set last month. As always excellent content. Cheers Kevin H
Thanks Kevin. Great to hear. Usually Basen is a reliable supplier.
Thanks for sharing . Fully watching. Greeting from Cambodia
Thanks a lot Sim!
@Off-Grid Garage - You do it 100% right. Go different ways because not all is written down ! Congrats to the 30K subscribers.
Thanks a lot!
Thank Andy have a great day
You too!
Great video today Andy!🤙🤙
Thanks Michael!
Andy i had a very similar problem with the so called ghost voltages, but mine were occurring on the shunt. I found that the reason was the victron shunt was before the bms, and the smartsolar being after the bms, the diy ve direct to usb cables do not have an isolated ground! So any voltage drop across the bms or cables, will mean that some ground current will go through the ground of the ve direct port, through the ras-pi, and into other ve direct ports on the other devices! The fix, was to buy the genuine ve direct to usb cables for $29 each from battery central brisbane at acacia ridge, they were very helpful! This fixed my incorrect victron readings and now everything works great. You probably only need to replace one of your diy cables with a genuine one as that should remove the ground loop. The genuine cables have an isolated ground, the diy cables do not!
Thanks Lexi, that is a very good point. I was thinking about the ground loop due to the cable and adapters we made. That could in deed be the reason for it.
There are isolated adapters out there, I'll show them in a separate video and how to install them.
Thanks for sharing!
Awesome Andy, another great video, keep up the great work. This is super interesting as I have one of these BMS on the way from China. (So glad the floods didn’t affect you too much).
On the topic of active balancing: I fitted an active balancer on my 400Ah caravan bank two years ago after around four years with no balancer, and whilst it kept the balance great, I certainly notice a lot of “phantom drain”. When my JK BMS arrives I will remove the active balancer.
Thanks, Dave. The balancers should not use much power, like ~10ma when active. Maybe it's faulty. Yeah remove it and see if this is the problem. You probably only ever need it once a year for maintenance...
@@OffGridGarageAustralia Thanks Andy- yeah I’m not sure what’s consuming a bit of power, but suspect the active balancer as that’s when I started noticing it.
Wild “educated” guess, I think something is constantly chewing around 250-300mA, which also shows up occasionally on the Victron smart shunt. It’s not a big deal when we’re using it daily, but just a bit annoying for storage.
I can’t access the battery compartment when the van is squeezed in, and stowed in it’s garage so that doesn’t exactly help much- how I wish it was in a proper shed. Anyway, it’s not a deal breaker, just something I need to watch.
Cheers
wow, how fast you grow, 30K, well done... soon be 100K.
Thanks a lot. 100k is a dream and it will take a very long time to achieve that.
Thanks Andy
Any time!
Not that u come boring, there was a video promised about the settings of the Multiplus. Something like that. I also bought a Multiplus II, but the small one. 48/3000. Then found out u have to buy the special kable for it. 70 Euro. And then even u have the cable, still can do nothing without a password to come into the Victron Connect app. Really super.
This video is coming. The list is long. What password are you talking about?
Glad that you shared that story about the Shenzen Basen cell age and quality cause 2 years old is never grade A cause 3 months not sold and the manufacturer sells them already as Grade B just due to its age. 3 months not 2 or 3 years. And from the factory auction the chinese deal lottery starts.
Here in Germany we had also some issues recently with ShenzenBasen and the quality when for example a new customer got first 8 cells of good quality and his second order with a bigger amount of 32 or so was more or less a mix of mediocre stuff.
Good to hear from your observations and I guess they now will run in a lot of trouble with many customers scanning the qr codes and comparing those with the claim that they had gotten A Grade cells.
Nice one Andy
Thanks Trevor.
Great vid as always Andy & congrats on ur 30k Subs. I am looking forward to seeing ur tests and results of the optimisers vs micro inverters, wasn’t sure how they worked, but have picked up a bit from the comments here, so this will be some interesting stuff. I saw ur ghost voltage vid, will havta reveiw that again, ur inducing a voltage/current thru ur 240v & PV wiring in the roof area to some degree tho aren’t you?, where the different cables are running close together causing ur LED floodlight to stay on in nightlight mode which could cause some type of a feedback on the PV side, in YOUR case, was my first guess, but I also noticed I had similar Ghost voltages at night of 300-500mv all night, no moon, pitch black n cloudy as well, until I put a big cap on the PV side as an experiment, 64v cap, 60vocPV, 12v system, renogy 40a mppt controller, I connected it on a sunnyish afternoon around 1;30pm, just before some cloud come over, the system and cap at 51v, & when I connected the cap the system was producing the most I had seen previously, at about 30-37amps from the PV’s, well it suddenly shot up to 42Amps for the next 45 mins or so as cloud had come over soon after I connected the caps, & sustained this for some time, slowly decreasing the amps down as the cp voltage slowly dropped to a steady 4-6a @ 15v after a few hrs by 4pm while it was very cloudy all afternoon, at 6pm it was still delivering 2A, anyhow, as it turned out the caps kept the system voltage up to 13.7 volts all night on the PV side & delivered a steady 1-.8 amp input till after midnight recharging my system to 100% by 8 pm again, from 96-97% earlier just after having a microwave dinner, coffee, etc. I am going too keep playing with these capacitors on both sides of this system as I am finding a number of positive ways they can be used to help increase overall solar yield, & they are great near ur inverters too of course. Thought some of ur viewers may have some interest in this sort of experimenting. Thanks for all ur great vids Andy, Cheers All!
Thanks Evan. I cannot believe we have passed the 30.000 already and I somehow missed it being still offline.
Can't wait to see how the 4s work's cause I'm in need of a good working 4s BMS
Coming tomorrow!
Morning Andy, rain is slowing down here in Victoria.
We had one sunny day and more rain today. What is going on!?
Hi Andy I think the solaredge optimiser only work with solaredge inverters but you can use Tigo optimisers with any inverters
I read they can be used without the inverters... we will see.
Maybe what you have is a newer version of the optimizer, but afaik you will need a SE inverter as it controls the system. The best thing about the SE system is added safety as it can detect arcing and turn off the system to prevent fire. Also, when you switch off the inverter, all modules switch their outputs to 1V so the string voltage becomes equal to the number of panels and you can safely work on the system. You also get interesting per panel monitoring data. I have 30 panels with SE running since 2016 without problems. So far only one optimizer failed and had to be replaced and I noticed only by looking at the panel stats. Downside is the added cost...
@@OffGridGarageAustralia I hope you can as I got one to try and couldn't get anything out of it that was about 4years ago
@@dama054 I hope they will work. We will test and see...
What a cruel elimination process! :)
It had to be done!
Andy, I was miles off 🤣🤣🤣.
Good fun nice one cheers.
Gaz x
Yes, you were a bit off. One day it will happen, Gary. Keep participating and I'll send something to Scotland!
@@OffGridGarageAustralia Just send yourself then we can have a calibration session. My money is on Guinness being more accurate.... Black can = a darker crisper shadow.
Self explanatory to many subscribers but you always get into the details. Your solar videos are about finding out how robust solar can be and what rules of thumb we need. You content hits the spot, and some, for me. Ghost volts? Some headfuckery going on. Then solar optimizer? Microcharge controllers? I cast my vote to explore these further using the fence panels and your battery bank in the black abs box. Anyways. Once again thank you for videos
Thanks a lot for your kind words and comment. We will do a ton of testing! 💪
Andy, your video with rainfall started so loud it cleared the cats out of the room LOL!
Oh, wow. The rain was very heavy in deed. Mine does not like that sound either...
The solaredge optimizers are great I have 12 of them if one solar panel have shade the rest wil give full power
Some here said I need to connect them to a SolarEdge inverter to make them work but I ready they are working standalone as well?
Ha ha, IV just set up a 1200w micro grid tie running off my old 440w PV it's not woow, but it winds my meter backwards he he.
But now IV too much sun for my 7.7kw battery I'm making up a change over switch to move from charge controller at 520w 60v to the micro but at 2x 260w at 30v
This is on top of dumping power next door on there pool pump......and keeping my shed cool....
Love the sunny times.
In india also heavy raining is happening,take care Andy sir.
Thank you, you too!
Congrats on 30k, next is 50k
Ah, yeah, I missed it somehow as we're still offline...
Can't believe it is 30.000 subs 🤦♂️
Andy I just installed a jk bms 8s with 8 x 304amp eve cells with a 3000va victron phoenix inverter . Still testing, I will be very interested in your results.
Keep up the good work.
Video is coming tomorrow. Also check out the community page on my channel.
My friend is an installer. He does big ground arrays and loves the optimizers because he can raise the voltage and run much smaller size wire runs. He has some really long runs.
I wonder if they actually rise the voltage? That would be bad for the charge controllers.
@@OffGridGarageAustralia
He works with some crazy high voltage like just under 600 volts. One mistake and you’ll have a dirt nap. He like the Schneider Mpp.
@Andy Time to make your solar setup flood-proof with a backup-generator in case the power-grid gets flooded 😉
The battery is my generator! 😁
Possible your complainers of your videos are so married with closed minds, with no interest of what you are doing, unlike the rest of us!! Who is always good to see others with similar interests or projects, they may have or going to be doing. Keep up the good work with interesting videos and your own personality showing. Your a natural, keep it up, how else would we see a sunny Australia?? Regards.
Ah, no, they were not complaining but wondering why I have so many issues, so I thouth I'll get this straight. If I get more of these comments, I can just link to this video without explaining it again and again 😉
Thanks a lot George!
Related to the phantom load in solar panels I believe that maybe an inductive current maybe are energizing your solar arrays. Try to clamp with the meter more than one cable to see if current are canceling or adding inductive power.
There are reports of some Victron problems where the Victron backfeeds the pannels at night.
One last thing to update is the counter on the shed back wall :)
I need an electronic counter. It's changing too quickly 😁
1. Raining also here in Munich
So the optimizers are dc dc converters. They make no sense except for the switch-off function.
Sunny hot Australia, ... usually 😆
Have seen earlier a video somewhere about optimizers that they are roughly 3% more efficent.
So i will not bother when i build because of more risk for failure and the extra expense.
I will comprehensively test them!
Search for vortex turbine. When it comes to water power. Very interresting.
Good news I will made my first 15KWh battery soon. My solar inverter is hybridge one. so that I can use the battery to powerup my house. what I need to do is find someone to wire the 5KW inverter live back to the switch box.
Jorge is usually pronounced "Hor-hay". It's Spanish or Portuguese in origin. It does equate to the English name "George", but the pronunciation is entirely different.
Oh, wow, thanks for that. He said 'George' in his email though so...
Solar panels do not work well with liquid sun! 😡😳
I have been noticing, with global warming, the weather changes, I have more wind , I didn't have my meter, but guessing, I'm thinking we had about 10+ mph with gust in the 20+ mph range, all day, with decent sun, so I'm wanting wind turbines even more now!
I'm thinking about building a few 1kw turbines, to hopefully get 300-700 a from normally, and 1k- 1500 in wind storms, probably using a centrefugal brake, to slow the turning if it exceeds safe speeds, I would want to use with a midnite classic 150 controller, with the peak voltage around, 120vdc, with a safety keeping it under 130vdc, here the last couple years there have been plenty of wind to generate plenty of power! Along with solar it should keep my 40kwh bank charged, happy charging! 👍
The climate has changed dramatically in the last 5 years down here. No cold winters any more. Mid of May now and not much under 15° during the night. Very mild and unusual. We haven't used the fireplace once this year.
We used to have pure blue sky all winter long. No moisture, just dry from May to October. No we have so much rain and clouds. It has changed a lot.
solaredge optimisers only work when you have a solaredge inverter or you need the special independent optimization (IndOP™) serie to work with other brands. but you lose the function that you can readout the power output of individual panels (no communication), this only works it you have a soleredge inverter. if a 'normal' solaredge optimiers doesnt get the ok signal from a solaredge inverter they only output the 1volt output signal (so no power out of the optimisers), this is done for safety. actually in (larger) installations this kind of safety shutoff (when for instance there is a isolation failure) can be required so shut off all power to a safe level.
Hmmm, they seem to be working. I had one connected to a panel for a quick test and it output the normal panels voltage. I didn't check for any efficiency gain though.
@@OffGridGarageAustralia could you tell me the optimiser model/type? maybe it is a indop model (tht works with non solaredge inverters)? (i beleive those models have an i behind the model name, like: P370i ..)
this would be interesting, never used these type of solaredge optimisers. I installed alot of solaredge systems with the 'normal' optimisers in combination with there inverters and without the inverter there is only 1volt at the output. but seems to work wonders here in the austrian climat.
Hi Andy,
I would love a video on micro-inverters as i have shade issues in winter. With micro-inverters do i still need the main inverter that was supplied with my install ?
I have the same issue in winter and lots of shading, so I'm keen to find out what optimisers and micro inverters can improve.
If you have an off-grid system, micro inverters will not work unless you have a Multiplus or Quattro from Victron.
If you're on-grid, you just connect the solar panels to the micro inverter and connect this to your grid. No other inverter or devices needed.
@@OffGridGarageAustralia Thanks Andy, I have both systems. I will give it a try.
This is going to turn into “Jungle Australia” pretty soon
I'm constantly mowing. The ponies cannot keep up!
I've been told by Victron, that SmartSolar can't be used with optimisers. Also on community victron forum, some user wrote that he fried 3 250/100 units and Victron told him that they would not waranty-replace more controllers if he does not remove the optimisers. SmartSolar manual says "9.5.8. Optimisers cannot be used - Do not use solar panels with optimisers together with the solar charger."
This is only if the optimizers increase the voltage above the specs of the controller.
@@OffGridGarageAustralia Where did you find that information? Do you have that from Victron? That's different than what I've been told.
Hi Andy, I know you are a busy man, but will you have time soon to put the document together that lists all of your settings in the Victron CCs for the EVE battery charge parameters etc? Keep up the good work! Brian
Hi Brian, I'm working on a whole series of videos explaining the settings of solar charge controllers, BMSes and other equipment. These information will also go on the website afterwards for everyone the quickly review.
@@OffGridGarageAustralia Hi, will you also include any settings in the
Multi and Phoenix as part of that too? Brian
@@briannoakes1789 yes, I'll do this for all my devices.
Heya, oh I'm really interested in the optimiser test's as I have 12 pieces lighing in my garage whitch I really like to use if it doesn't blow something up or so
And if you optimize the Solar with this boxes you will raise up the EMI.
We (HAM Radio Operators) normally call them EMI raisers! ;-)
How far does EMI go?
@@OffGridGarageAustralia Please allow me the answer "it depends on".
It depends on the hardware design of the used devices in combination of cable length and oszillator frequency of the MPPT or the optimizer.
Damned
cool but what were the wires going off screen to to right under the gray battery? and i hope no frogs were hurt in the making of the rain/flood :)
Good point! I cannot remember but they were not part of the 'project'
The balancer is not expensive compared to the cells ^^
Docan power appear to have sent new cells for two delivery each 48cells
Great! I heard of them before...
Hello Andy, I recently paralleled a 16s with 4-12 volt batteries in series. Incase you would like to perform the experiment yourself, I will not ruin the surprise, but how well do you think the 4-12 volt batteries remain balanced between each other? Just an idea for a video you may find interesting.
Cheers.
Damn! I've got kicked out fairly quickly from the wheel of death! lol
Diego
"boldy go where no man has gone before"
now where have i heard this before ?
instead of andy , you shall be known from now on andy t kirk , commander of the batteryship the enterprise ;)
This channel was trigger for me start building my own off-grid systems. I started year ago with small 2×100Ah 12V 1kW mobile system for camping and month ago build permanent 24V system using Victron Multiplus with 24V battery using JK BMS. Andy have you tried to use CAN BUS of JK BMS?
JK CAN protocol is not compatible with Victron at this stage, possibly in the future as JK has published the spec.
Thanks a lot for sharing. That's exactly what I want to hear from people. Great to see you got inspired and your own projects off the ground.
Not tried the CAN Bus yet. I don't really see a benefit...
Hankzor is working on a special JK-BMS with Victron integration and two way communication. It will be here on the channel once they got it ready 😎
@@OffGridGarageAustralia Andy as I understand you use one Victron Smart shunt for all 3 batteries to read batteries capacity back to Victron? This part I still missing to get full system working in auto mode.
I have two sets of batteries, each total with bms 48V 230 Ah, so I can connect them in parallel so that I have 460 amps / 48 volts
I think my wife have had your answer for the ghost voltage of 40.71V, 0.27A and 10 Watts. She is quite sure you have been using her Moon Panels! LOL (40.71 × 0.27=10.9917) At least it is close enough (deviation less than 1.1%)
Hahaha, that is great, Teddy!
we need rain... from sonnie hot germany 😁
All yours, Max!
Is this Micro inverter capable of reducing the output power with the rise of AC frequency? If not it's not very suitable for victron ac coupling because it will start to oszillate when your battery's are full.
The optimizers from solar edge only work in combination with a solar edge inverter...
That's exactly what I want to find out!
@@OffGridGarageAustralia There are micro inverters that can do that. Enphase with the series 8 or Hoymiles for example 🙂.
Without the boost convertor the invertor would take power from the secondary battery, no?
Yes.
I have a question. Hope someone can advise me.I have spent many years building and using Li-Ion packs, mostly 18650 & 2170 cells. This is, however, my first foray into LFP cells. I bought some LF304Ah cells and are happy with them. Hovever I can't use them at the moment, I am waiting on my inverter to ship. How do I put them into a storage charge with my ZKEtech 40Amp tester. If I set the voltage to say 3.2V when do I stop the charge i.e What do I enter into the "cutoff current" to finish the charge. Love the channel by the way and subscribed. Try to watch all the epesodes I can fit in. Really hope someone can help!
Am merely a student in this class. Another good question that needs Andy's approach with tests
That should not be very difficult. As per specs of most LFP batteries they can be stored at 50-60% SOC for months without being connected to any charger. Voltage cannot be used to find this spot because of the flat charge and discharge curve. 3.2V can be anything from 20%-70%SOC.
I have a lot of videos on this channel going over this topic of charging and discharging LFP. They are very different to other battery types.
These videos for example explain that topic quite good I think and give you a lot of information: th-cam.com/video/pijPu7t-akM/w-d-xo.html
th-cam.com/video/qZg4Jxftw-c/w-d-xo.html
@@OffGridGarageAustralia Cheers Andy. Much appreciate you taking time to reply. I will look at the video you sugest. I just watched todays video and ordered the 4S JK-BMS from your link! Still not sure where to set the "cutoff current" though. But I'm sure I will work it out:-)
@@pepermintpilot1694 thanks a lot for your support. I will go through all the settings of the JK BMS in future video and explain every single one. That should clear up things.
When are you going to start building the Ark? Andy's Solar Ark channel coming soon?
What a great idea! I have enough animals here...
I ordered from Qishou but they dont ship to my place. I ordered from Basen and 3 weeks still not shipped out.
this suck. I could not test the QR codes.
They can send you a photo of the QR code upfront and you can compare once they have been delivered.
WHO KNOWS? ONLY YOU COULD FIND THAT OUT AND SHARE IT.
63rd!
Just a thought but have you taken care of EMP. 2025 is supposed to be a worse year for solar flare?
How do you take care for that?
Please test or advise!!!!!
If you have 2 inverters in parrelel running together. Same model everything, each has a bank of solar panels to it,
What would happen if you connect all the panels together and then both inverters run of the 1 large array,
Would it pull more kw per day, will you pop the panels, will it cause a nuclear melt down in the inverters..... Please advise, cause I suspect if it goes wrong it will be a very expensive mistake I make.
Congrats on the 30k subs.
Pretty sure you would generate less power as the 2 tracking algorithms would fight against each other.
Thanks Wayne. Are you talking about grid-connected inverters or hybrid inverters which are also connected to a battery?
@@OffGridGarageAustralia in my application it's off grid system.
Though Shane's answer makes sense.
I don't really think a 2kw inverter is a micro inverter. Would be better to use small Enphase inverters that are 350-500w and are designed for 1 per panel.
Solaredge optimizes as far as I know cannot be used without a solaredge edge inverter. It should stay in rapid shutdown mode always.
Tigo makes optimizers that you can use stand alone but you can't use any optimizers with Victron MPPTs as the MPPT will get damaged. The RS 450/100 might be the exception.
Are you using Victron isolated VE.Direct to USB converters? If the connection is non isolated you will get random voltages on your MPPTs as they switch the negative side of the PV input and using a non isolated cable may cause the MPPT to see strange voltages.
i did not realize that Australia had a monsoon season? i think it was the Aliens Andy?
That's my best guess as well! 😁
One question is I am about to buy a inverter but that inverter don't support bms support so what can I dont. I am going to hv 32 batteries n will make 2 sets of 48V @320Ah.
You don't need BMS communication. You can set a voltage in the inverter for when it is shutting down.
@@OffGridGarageAustralia but then won't I risk some cells over charging. Bcz these 2 packs would then get connected together to make 48v @640ah. Bcz the inverters charging wouldnt consider if there are cells which r charging faster than the others.
So I have a question of the jk bms. What is it telling me in system log? No. 1-2-3-4 and so on, says= 1. Before [1d22h51m38s] abnormal release of current sensor. So is there a problem going on??? The bms seems to be working ok. Have any answers???
It seams that I have similar issue as Alan with my 8s jk bms. When curent is low I also get Current sensor anomaly. On internet I just found that this is known issue by jkbms. And answer from support was. " in your picture , it is for inverter use , charging and discharging at the same time , so it have such a display
you can ignore it . it won't affect use"
Should definitely get a wind turbine
Not here, there is no wind. We're in a valley...
Когда тест то будет новой бмс?
hello I have a problem I want to ask
I set a password and I don't remember the password, Can I reset the bms? Please teach me.
i am suffering from a ghost voltage turns out to be my cctv camera infra red illuminator moved camera voltage goes down
Oh, wow. never heard about that before. Thanks for sharing.
So this IR light was enough to produce voltage on your panels?
Why people don't understand this channel is about experiment ...
Definitely Aliens
My best guess too!
Crap... I needed that balancer :-(. haha
Next time Paul!
@@OffGridGarageAustralia No worries. Keep up the good work. Love your content!. Hope everything is better in your location with the floods
did you see the 8A balanzer on their side,
I have a 10A balancer here. Still boxed up...
@@OffGridGarageAustralia hoooooo!!! when will the test take place?
051622/1248h PST 🇺🇸 051722/0548h Brisbane 🇦🇺 Guten Tag, Herr Andy. Danke, fur Das video und das link fur QR decoder. 73s…
Gern geschehen!
We need rain water here xD
You can have it all!
Mystery volt. from solar flare?
Watch the older videos, we even disconnected the panels...
SolarEdge "Optimizers" are MPP Trackers. Don't mix it up with Victron gear :) The Smartsolar is goint to do MPPT and the SolarEdge will also do MPPT so you will not get any usable Output :) The SolarEdge Inverters do only Inverting no MPPT just like the Multiplus II :)
That is not exactly true, the Solaredge inverters do actually track. The optimizes find MPP for a panel but the inverter finds MPP for system and work together to generate power.
@@ShaneFromSA Thats not exactly true :) Because the SolarEdge "Optimizer" also shuts down the Modules in Case of Fire ( controllable ) and removes the Panel from the String in case of Shading. But does the MPPT. The SolarEde has no Tracker inside :)
@@mikegamsjager8944 The optimizer is an MPPT for the panel it is connected to. Also is shaded conditions it doesn't remove the panel from the string that panel continues to provide power, it will just lower it's output voltage to not effect the loop current.
This is a grid-tie inverter, no grid-tie inverter has an MPPT as hardware. You change the output power of the inverter to track. If solaredge didn't track in the inverter it would overdraw from the panels and the DC voltage would collapse. Try run a Multiplus-ii with no battery attached this is exactly what happens.
@@ShaneFromSA No mixing up Things. The Multiplus II does not run without Batterys. It was a bit a bad comparision. If you find a panel wich will work within 45 and 54 Volt you could use a MP without a battery ( Theoreticaly ). But no device would do Tracking in this setup. The SolarEdge Optimizers does bypass the String to the shaded Panel. If the Panel gets shaded it would deliver almost the right Volt but it will not produce or to low amp's. So therefore the SolarEdge would work like a ByPass Diode. Kind of :) But as i said the Tracking is done by the SolarEdge "Optimizer" as well as the monitoring ( over PLC ). The Tracking an limiting of the SolarEdge inverter happens at the optimizer level.
@@mikegamsjager8944 For your experiment you can have PV -> Victron MPPT -> Multiplus-ii, you can actually run this setup and as load your load or export is less than PV the system will be fine but it will not be optimal because as you can't get close to PV max power without the DC bus collapsing because any type of overshot will collapse the DC bus as you are trying to use energy that isn't there.
The Solaredge optimizer is a DC-DC. You can put DC-DC in series and run power through them even when they are off in most cases. DC-DC don't respond like panels which increase there resistance with low irradiance. There is no need to bypass, rather you can convert the panels output of 40v 2amp to 8v 10A using the DC-DC.
The Solaredge inverter still has to track and run at MPP so that it doesn't use more power than what is available, if it would the DC voltage would collapse. The tracking algorithm is going to keep loop voltages at some optimal and if loop voltage rises it will export more and if loop voltage drops it will reduce export. It has to track if it doesn't then it will have no way of knowing how much energy to export, the optimizes do have coms but it is way to slow for actually controlling the inverter.
Doesn't 2018 seem a bit odd for production date, thats like 4 years ago.
Did LF280K batteries even exist in 2018? The first issue of the datasheet is from 2020-09.
These cells are durable.... 2018 is like yesterday. I am still enjoying a CALB 180AH produced on 29 October 2012. Still going strong with their balancers 24/7 as standby power source