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great instructional video, thank you

Finally ! A clear explanation on how to use these things properly and safely .... thanks brother ! 😊

Hello @TheWilltoBuild. I have 42 battery modules from an old NISSAN LEAF with 3.2V each. What kind of BMS should I get? Would one of this bms that you installed fit this solution but with less cables? Imagine 21 cables connected to groups of 2 modules? Or should I use 1 cable per module? Thank you in advance

Great video This is exactly what I needed.

Well said very clear and easy to understand. Thank you.

good info on PSU but very unsafe use of a Li-Ion cell , the maximum V & A's connected to a cell or a bettery (Cell Assembly) SHOULD NEVER ECCEED THE SPECC's in some situation it may support it for a period of time in other's it may be catastrophic VERY FAST . Thank you for the psu info , cheers and i suggest you be more carefull with Lithium in most of all common form we get it as DIY'ers

if I set mine on 14V and connect it to a battery it automatically jumps into CC 🤦🏻‍♂️🤦🏻‍♂️🤷🏻‍♂️ HOW does it stay in CV?

From someone who is familiar with these, I have seen on AliExpress they have different prefixes, some are NPS, DPS, WPS and many more. I'm thinking about getting one for electronic repairs, mostly phone and laptop boards. What is the difference between the NPS306W and DPS305U power supplies?

How to calculate a single 3.65 V cell charge and discharge state into percentage? For an example if want to charge my cell 90% only what should be the max voltage of a single cell and if i want to stop discharging on 20% balance power, what should be the minimum voltage. What if a room temperature is getting 30 Degree Celsius max in summer where these cells are installed and what if a room temperature is getting 0 Degree Celsius in winter, are these cells required any extra care while getting used as a home backup?

All the videos I've seen so far does not talk about the P- wire and its just dangling. For a newbie, I'm really confused about this wire and where it goes

Not very intuitive at all. Why wouldn't they just have it display the changes even when its not hooked up :P I can understand if it needed to read the load first but still...

thaaaaaank you so much. Very helpful

Nice video 👍 I have a 12v car battery charger. Can I put 4 in series and use that charger? Then I don't have to buy a power supply and a 4s bms or anything else.Thanks 🙏

Super useful 👍 thanks 🙏

Nice 👍 they say you are not an expert untill you can explain it simple, you just did ! Thanks 🙏

I know it's an old video, but it helped me get my head around how to use this. I'm using kind of the same purpose as you with lithium cells. Mine have dropped to 0v so bumping them. See if they are any use so putting them to 3.6v and testing the resistance. I'm not very good with electronics so doing this in the garage. I have built 10s4p packs and 12s3p for my electric skateboard but with new cells. I managed to get hold of couple hundred or so recycled cells see if i ca do something with them. Thanks for the quick video

Hey! Can you tell anything good about QSO (Shenzhen Qishou) prismatic lifepo4 cells?

I was going to buy 48 eve cells from 18650 battery store and they are telling me that there is no need to compress them, but did put anything in between the cells or not have heard anything about orion bms thanks

Instructions with a BMS?? You are either joking or you purchase your BMS from an American company (if there is such a thing). I use either JK or JBD BMS and never got any directions.

What is on your gloves?

why not to just charge one and then connect rest in parallel with it. Leave it for a day , all will balance themselves. :)

I just got the one on the right, but when I connect the positive and negative I get quite the spark. Is that supposed to happen?

Great video man, it took me 5 or 6 trys with other clips but as soon as u spoke I knew exactly how smart u are and how articulate.😊

0:54

Can i charge my four lifepo4 cells, connected in series....with my lithium specific 20Amp battery charger? They've been sitting unused for 3 years since i bought them. 3.5 and 3.4 volts each . Finally getting serious about building a battery with a 200A smart BMS. Thanks

What about p- will you connected to the battery positive

Very concise and helpful for a total noob, thank you!

Does 3.65 volts mean 100% charge and 3.4 volts will charge the cell to 80%? Or are 3.65, 3.5, or 3.4 volts the charging speed of the cell?

I am confused. Do I really have to balance my x16 pack even if I have BMS JK 200A? Do I have to buy additional balancer?

I was hoping for an explanation of what happens when the voltage on that charging battery reaches the ceiling.

If I have 4 50ah 3.2v cells how many ah do I have

@TheWilltoBuild When connecting 2 batteries in parallel (your favorite setup), do you short the negatives and connect the BMS's to this, or do you let the BMS's being the "busbar" so there is no direct short on the batteries?

That Kungber has two models, 5A and 10A. I wonder if the 5A can be modified to output 10A also. I bet they have internally the same components (for production efficiency by the manufacturer). It could be just one resistor affecting the max current limit.

Very well explained bro 👌

This is exactly what I need. I like the way Black is negative and white positive sounds like American system. I really think each wire should have a small in line fuse near the terminals to prevent a fire incase of unlikely event of shorts between wires. Great Video

Why one takes longer to turn off is it probably has a large capacitor in the circuit to have a move stable control. I'll have the one that takes longer to shut down.

Does this mean a battery only gets out of balance when one has a weaker cell than the rest and only by that much? Anybody?

clear as a day

great video - what I don't understand is why 2 bench power supplies instead of 1 with a 8s BMS instead? your supplies are capable of up to 300w each?

Thanks for a great video! I like the parallel option and just checking if all BMS' can support this option? I'm planning to use the JK-B1A8S20P on each battery.

Hello, @TheWilltoBuild. Thank you for the awesome video, I constantly reference back to it! I am wondering, you mentioned about having a better charger unit that would be around 70Amps charging for $250, could you please send me the link? I plan on using a generator to top up the batteries on cloudy days! Thank you, I appreciate it

battery 24v 100ah Lifepo4, charger 20 amperes is it normal or is it very amperes?

Any update on these cells for cycle life?

New active balancing included in BMS units for the past year or so has made this pre balancing step irrelevant unless you have a couple of wildly outside the average voltage.. In that case charging or discharging the individual cell to get them close is the remedy.. The JK units and EVE HSEV cells I have only required assembling the battery to its 51v arrangement, connecting the BMS and setting it to balance all the time.. Then I raised the charge voltage over a couple of days allowing the active balancers 2 amp transfer system to keep the cells balanced until I got to the top charge of 3.6 volts.. Then I allowed the inverters to slowly discharge the battery bank over a couple days and repeated the slow charge over a couple days again which allows the cells to be conditioned and broken in.. Having a fixture with mild compression during this initial several cycles that has a couple of pounds of pressure on the cell pack helps to force out any residual gas bubbles that might be inside the cell laminations so having them vertical with posts up during this time and charging/discharging slowly at no more than .2c drastically reduces the stress on the cells and will give a longer life as long as you keep the charge/discharge rate below .5c.. Once the cells have 50 or so cycles behind them the pressure from the fixture can be reduced to a few inch pounds at full charge or removed completely because the batteries are fully seasoned.. Follow these steps and your batteries will last 10 to 15 years before normal age deterioration starts to catch up with them and you approach 80% efficiency..

This cleared up a lot for me. Thanks!

Great video for me to learn. Thanks !!

This is so helpfull dude.. i set mine to CV.. set my settings, connect it to my battery and it would go to CC. But thats normal.. lol. Thanks bro!

hello...at what temperatures are the batteries exposed? does the insulation work at - 20 degrees Celsius?.....

You definitely explained how to set up the Kunberg better than the instructions did. Wish I had watched your video first.

hey, does your lishen battery still work ? how it’s work now? can u tell me that