BATTERY PACK AND BATTERY REMAINING POWER CALCULATING METHOD

摘要

A battery pack having a function of calculating the remaining power of a chargeable battery cell. A microcomputer (5) incorporated in a battery pack calculates a power integrated value Y . The microcomputer (5) uses it as battery remaining power data if the power integrated value Y is below a maximum power integrated value Ym and uses the maximum power integrated value Ym as battery remaining power data if the calculated power integrated value Y is the maximum power integrated value or more. The microcomputer (5) corrects a reference power integrated value Y0 depending on the number of reaches of the power integrated value Y to the maximum power integrated value Ym.