| 摘要 |
An object of the invention is, in a mobile electronic device having a sleep mode for power saving, to make it easy to measure a current in a sleep period without requiring a measurement device with high-resolution precision. On the basis of a reference capacity table and a sleep period current value measured by a measurement device connected from the outside which are stored in a storage unit (16) in advance, a control unit (17) calculates a remaining battery amount by summing a current value actually measured at a non-sleep time and an integrating value of a sleep time and a sleep period current value, and subtracting the sum value from a reference capacity value stored in the reference capacity table (160).
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