Ego batteries.

[jay7264]

Hi everyone I have 3 ego batteries that are no good for those original equipment. Charger refuses to charge. I want to put my own bms on all 3. Can I parallel the balance leads then parallel the main wires together. They are 14s. The cells inside are samsung 25r. Each pack is 7.5 ah I took them apart and did voltage checks on the balance leads. Would I just parallel all the balance leads from all 3 packs

 

[fechter]

Yes.
Just be very careful not to cross any wires.

The Ego batteries have some kind of serial communication with the charger and tools that is proprietary.

 

[jay7264]

I'm using my own bms. The batteries show up as defective when put into a tool or charger. But the cells are just fine. Can you recommend a bluetooth bms that's good. 14s about 50 amp