wow, that's a huge battery bank! do you want to share your setup on this channel?

Great to hear!

thanks

thanks for the feedback, didn't measure the voltage drop.

@@SolarEngineering It occurred to me that they probably alternately measure the voltage of the cell then feed current to the cell at some slow frquency so they can avoid the voltage drop due to current?

@@BenMitro I don't know, 1st and 2nd look like just opening bridge between cells allowing current to flow and it appears to be highly ineffective (at least for batteries 25Ah+). The last balancer has a transformer that allows pushing into cell 4A independent of cells voltage diff (pulsing to measure voltage).

@@SolarEngineering Yes, I noticed that about the last balancer. Looks like the way to go if that balancing is on the cards. Still in two minds about the efficacy of doing this after the batteries are initially balanced...but I don't know.

It's my pleasure

Hi, if you have 2 batteries with 14s in parallel, then your pack is 14s2p and you need to use just 1 active balancer since cells in the pack paralleled as well.

wow! curious to hear how it works.

thanks!

поставил последний (4A) к себе в систему, он единственный отбалансировал ячейки.

need more info. What is the battery config? 31 cells total and 15 are in series?

version with Bluetooth (last one in video) works great

Glad to hear it

I'm using 2 balancers with my 23kWh bank (1 built-in into BMS and 2nd balancer from this video). Make sure to run 2 sets of wires for each balancer.

@@SolarEngineering thanks for the return. You mean each balancer have is own cable for exemple connected close the cells?

yes correct.

@@SolarEngineering you mean connected directly to the batteries (to every single cell) and not to a connection hub?

@@rOSScOGITANS correct. Connecting to hub (or splitter) can cause false voltage readings and balancers will start balancing each other.

I know that last one I tested will work with external power supply. Not sure about others.

@@SolarEngineering I have just see new balancers 2s~24s it should work. Thanks for reply

Thanks

I'm using JKBMS with builtin 2A active balancer in 23kwh battery bank. It's rated for 200A, but I'm limiting it to 100A. So far works well.

@@SolarEngineering thank you for your prompt response. Do you use it 24/24 and 7/7, all time connected to the battery bank?

yes, working 24/7 since feb 2022

yes

this video might help: kzfaq.info/get/bejne/jsWllqt5086YeZ8.html

balancers designed to balance individual cells in packs.

@@SolarEngineering thanks for the reply but what I don't understand is how it would isolate an individual cell when they're all connected together as one thank you

​@@dust6242 The active balancer has wires going to each group. So the 4s balancer has 5 wires. 3 wires go the the middle connections and 2 wires go on each end. Now the balancer can see the individual voltages of all 4 cells. Any two wire connections side by side can see and control the battery in between the two wires. I hope that makes sense. So if you had 4 separate batteries the balancer would need 8 wires to see the positive and negative of each battery. When you connect these 4 batteries together in series, 3 of the 8 wires are doubled up so the extra wires can be removed. You end up needing only 5 wires.

​@@dust6242 Also keep in mind that the balancer can only work between batteries in series. If you have a group of batteries in parallel, they balance themselves because all of their positives are connected together and all of their negatives are connected together.

got it, thanks for feedback

2-4А очень мало для аккума в авто, т.к. там очень большие токи. я не строил батарейки для высоких токов, но насколько я понимаю надо правильно подобранные ячейки, чтобы не было дисбаланса.

here you go my friend: s.click.aliexpress.com/e/_AB7PCv

it's not going to balance pack, v diff going to be 100mv+. Only last balancer is doing what it's suppose to do.

😂😂😂 когда нажал на паузу и строчиш комент даже не начав смотреть

@@ivecodaily4x4 да, скоро появятся тесты

@@SolarEngineering с текущим курсом $ Китай стал прям неприятно дорогим😭

I personally prefer to set a low start voltage, it could be too late to balance when the lowest cell reaches 3.45V (at least on my bigger pack). My settings: start voltage 2.5V (basically balance all the time) and cell diff voltage 0.02V

and to your previous question: it's not to make Heltec happy, it's to show that in real life balancer will not reach specified amperage.

@@SolarEngineering I'm Sorry for that wrong question. English isn't my native language and understud what you said about the real life at the second time i whatched which seems to me very clear. That's why I deleted It! Thank you!

@@jefersono1971 I see, English is not my native language as well.

try 000000 or 123456

I don't think so, all of these passive balancers are too far from specs. For example one of them is rated for 5A (so wires must be rated for 5A as well), but it's balancing with only 20% of the rated current.

any other wrong ways?

Is 12-16s still available? Thank You

@@electronpower2758 I am interested in 4s 10A. THank you.

Hi...Thanks for your explanation and instructive video. Interested on the 3-4S 5.5A balancers. Please let me know. Thanks!!!😀

have them,

i can't find a good active balancer for my 5S 12v 20ah lead acid pack (electric vehicle) do lithium battery balancers works on lead acid batteries? i thought you might help me