Method of controlling discharge of a plurality of rechargeable batteries, and battery assembly

摘要

The discharge method discharges a plurality of serially connected rechargeable batteries, wherein the remaining charge in each discharging rechargeable battery is detected, and a battery with the lowest remaining charge is designated a low charge rechargeable battery. The plurality of serially connected rechargeable batteries are discharged while supplying battery voltage stepped down from the output voltage of the serially connected rechargeable batteries to the low capacity rechargeable battery.