Li-poly noob questions.

[wesnewell]

The easy way is to just use 4 of the bottom 2 packs balance leads. If your bms only has 12 balance wire places, Just use the bottom 4 of each pack. It really depends on how the BMS is designed. It could be designed to work as a 12s bms with only 11 balance wire connections and still function as a 12s bms. In this case it would use the end cells main positive and negative connections as the 2 other balance wires needed.

 

[Arbol]

I think I know the solution: join last pin of the first battery with the first pin of the second battery (and so on). These two pins should share the same pin at the BMS (the fifth).

 

[wesnewell]

Yep, that's it. But this is already done when you plug the first pack into the second using the main power connectors. So it's almost redundant. I recorded a very small difference in voltage without connecting the actual balance wires together, but it was like .001V iirc. Not enough to worry about imo.