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iām gonna take a course in electronics and building batteriesā¦to help me out and for science Iām thinking of getting this
first i have a 12s6p battery i need to discharge (from the balance plug) and i also want to use it to experiment with single 18650s i want to study how batteries and electricity work in general. Iām aware i can discharge with a light or something but since i want to continue to learn about this iād figure i can kill two bird with one stone (i hope iām not one of those said birds) by making this purchase.
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yes and noā¦it maxes out at 6s for lipo/lithion so up to 6s sureā¦ on a 12s you can use a light sureā¦slow AF of get more of your science on and use some 1ohm resistors in parallel and will make quick work of burning off heat/energyā¦ heat sink helps but a high ass fan blowing across them will help keep resistor temps down
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You can use something like this to discharge a battery but iāts a bit weak. https://www.aliexpress.com/item/32822564230.html?spm=a2g0o.productlist.0.0.435b1bc15SKoLY&algo_pvid=7fc29e7f-ca03-4be0-9374-62770a484fba&algo_expid=7fc29e7f-ca03-4be0-9374-62770a484fba-35&btsid=340ea186-dbb4-44ca-9e32-118e76c9890c&ws_ab_test=searchweb0_0,searchweb201602_6,searchweb201603_60
You would discharge from the discharge wires though and not the balance wires.
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i was thinking of using clamps or some sorta plug to discharge from the BMS plug 1 p group at a time.
one of my groups is dead and i dont want to discharge the whole pack at once i need to go 1 group at a timeā¦correct?
no, go to the dead group and try and bring it back up to the others groupsā¦ hopefully the other groups arent above 4.05v cuz that about as high as a B6 will take the cell before it cuts outā¦ otherwise charge it up to meet the restā¦it may take a little babysitting to hit the number right but start thereā¦let is restā¦charge the pack back upā¦let it restā¦ and ride and monitorā¦
depends how dead were talking
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i think that time has come and is gone. the nickle broke and i think it could be a vented cell possibly as well
wellā¦bleeding the pack down sure aint going to save it then lol
if its fairly new, swap in a new groupā¦ otherwise time to go 11s lol
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lolā¦not at all i have to discharge for transport. at one point i thought the same thingā¦lol. I donāt know how to build batteries i plan to take a course this winter during the non riding monthsā¦we get a lot of snow here.
Was excited to get started after charging each 15Ah cell to the same voltage individually, but looking at the result afterward and thinking about it more, I might give it a do-over with balance leads glued in as well and just do it neater overall.
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Sorry, but I always need to find some points to point out 
The balance wire where you go from the right to the left row on the end is likely to rub off over time. That will not cause any short, but the balance wire can broke.
On the other places the balance wires can get cut by the sharp corner of the nickel strip.
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also, whats the point of thick silicone wire for series connections, if they lay only on small piece of nickel? that nickel could be insufficient for all the amps
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put some heatshrink over the balance tabs too.
I would put a stripe of fishpaper on the taps better
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Sry boys, you were misunderstood.
I already fixed those problems, but this was a picture that Iāve made a long time agoš
Than why did you post it?
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I thought it is just a tread where everyone posts thems battery packs
Yes it is, you right, but usually people post there battery to get feedback if they made everything right or to ask questions about how they should proceed.
Thatās why we pointed out the parts which not optimal on your first picture.
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