POWER SUPPLY DEVICE

摘要

The present invention relates to a power supply apparatus, more particularly to an improvement of a power supply apparatus provided with a plurality of secondary batteries connected serially, as well as a control of charging and discharging of the secondary batteries to suppress an accelerative deterioration of the secondary battery. The present invention provides to a control unit with a function for stopping the charging when the charged amount in charging becomes larger than the predetermined value, another function for changing the initial set value to a larger value when a variance in the charging capacity among the secondary batteries in charging becomes larger than the predetermined value. <IMAGE>