| 摘要 |
<p>An electric device comprises a plurality of detachable battery units (2, 3, 4), each consisting of a set of storage batteries (28, 3B, 4B) and storage means (11, 12, 13) storing information about the charge and discharge states of the batteries. Connection means is provided to connect and disconnect an electric device (1) electrically in response to each battery unit being attached or detached. The device includes drive means (9) for driving load, charger means (5) for charging the storage batteries (2B, 3B, 4B) by referring to the information stored in the storage means (11, 12, 13) of the mounted battery units (2, 3, 4), and control means (6) for controlling the power supplied from the individual battery units (2, 3, 4) to the drive means (9) by referring to the above-mentioned information.</p> |
