Em3ev quick question

[worldpax]

In reference to the triangle battery packs that cellman sells, can 2 of them be wired in series to make a 100v pack? I'm thinking yes, but also thinking there might be something in the BMS that might get in the way.

 

[bassett]

+1 subscribed

 

[drebikes]

No reason why it wouldn't work. Each BMS takes care of its own battery, thus when one of the batteries reaches the low voltage threshold, it will cut itself, and thus cut the circuit. There is always some dispersion in manufactured parts, so there's always the risk one battery can be say 1% better than the second, thus the "weaker" will discharge first, ever so slightly faster than the other. Since they're in series, one battery exiting will open the whole circuit, unless you wire the only live battery left and cut out the empty one.

 

[Scottydog]

Should you be able to charge them in series also if you use the correct voltage? I am wondering if I can use their batteries in series to get the 100v and run additional pairs in parallel to increase the Ah capacity. If charging in mass is possible, then would be a great option.

 

[parabellum]

Ask cellman, some BMSs need parallel diode for pack series connection.