@fizz57
It's not that simple, just NOT the battery. And this kind of battery isn't also simple at all.
To my knowledge, there are 4 companies involved for 787 batteries :
- GS YUASA (J), cells
- Kanto Aircraft Instrument (J), PCB for balancing/monitoring
- THALES (F), battery housing/assembling
- Securaplane (USA), charger
All have to work together to make it work....