BitcoinBandit
Member
- Joined
- Apr 20, 2019
- Messages
- 32
Hi all,
I have been fortunate to score a whole heap of Motorola phone Batteries, all in VGC. I am trying to figure out a way to use them and I was hoping someone might know how the BMS functions on this battery. At the top of the batteries there are two pins which have around 7.5 volts in all of them. On the back are four terminals none of which show any voltage. I found a dud one with zero voltage and broke it down and it was very difficult to get the 18500 cells and split them apart. I damaged one cell almost immediately. I was wondering why I cant leave them intact and solder a BMS to the four terminals making use of a very sturdy housing and wiring ready to go. At 7.4 volts I am assuming it is a 2S battery and so even if I parrallel them all I will still have a series problem that is unmanaged, unless I can figure a way to use those four terminals. Of interest the older batteries have three terminals on the back and they show the voltages of both the cells in series.