| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack which is hardly affected by vibrations and impact or the like and exhibiting stable characteristics, and a power-assisted bicycle using the same.SOLUTION: A battery pack comprises two battery-coupled structures carrying a plurality of flat batteries, and a protecting circuit board protecting the batteries during charging and discharging of the battery. Wiring length between the two battery-coupled structures and the battery protecting circuit board are approximately equal to each other. |
