A system control apparatus (30) for a mobile body which controls a motor (15) and the entire system of the mobile body while monitoring the remaining capacity of a battery (20) includes: a remaining capacity estimator (21a) which estimates the remaining ca...

A bicycle power supply apparatus comprises a battery unit (32), a bicycle condition detecting unit (25) that detects when a bicycle is in a selected condition that ordinarily does not require drawing current from the battery unit (32) for powering a curren...