that is the inside of a Bionx ebike Battery

bionx_li-ion-battery-pack-electrical-bicycle-repair
Bionx Battery Pack repain
bionx_li-ion-battery-pack-electrical-bicycle-repair
Bionx 404Wh Battery
bionx battery repair
bionx_li-ion-battery-pack-electrical-bicycle-repair
bionx_li-ion-battery-pack-electrical-bicycle-repair
bionx_li-ion-battery-pack-electrical-bicycle-repair
bionx_li-ion-battery-pack-electrical-bicycle-repair
Control board of the bionx battery. The black part is a speaker.
A Lot of 18650 Cells in the bionx battery repair
bionx_li-ion-battery-pack-electrical-bicycle-repair
bionx battery repair
bionx_li-ion-battery-pack-electrical-bicycle-repair