Hi, I'm attempting to make a battery pack for my bike light (the ones for sale online typically aren't waterproof, and I ride all-weather. )
I realize I need a protection circuit to make it safe, so I purchased a Tenergy PCB 7.4V pack (item# 32089 on Amazon battery superstore).
I have the basic idea how to hook it up, but have run into two issues;
1) there are 2 terminals labeled "BM". Which one hooks in the middle of the battery pack? (between batt1 + and batt2 - )
2) can I use my balance charger to charge this pack (2S X 2P) even with the safety IC installed? It seems the charger can charge through the P+ and P- terminals on the safety IC, but I don't see where the middle terminal from the charger would go.
Any input would be helpful. Thanks!
I realize I need a protection circuit to make it safe, so I purchased a Tenergy PCB 7.4V pack (item# 32089 on Amazon battery superstore).
I have the basic idea how to hook it up, but have run into two issues;
1) there are 2 terminals labeled "BM". Which one hooks in the middle of the battery pack? (between batt1 + and batt2 - )
2) can I use my balance charger to charge this pack (2S X 2P) even with the safety IC installed? It seems the charger can charge through the P+ and P- terminals on the safety IC, but I don't see where the middle terminal from the charger would go.
Any input would be helpful. Thanks!