| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an apparatus, capable of switching a smart-battery type battery pack having different discharge finishing voltages. SOLUTION: The apparatus is used for alternatively switching and using a plurality of battery packs 2, 3, where each of them is provided inside with a detecting means of battery residual quantity of battery cells, and a detected result of the detecting means can be output externally. Means 9, 10, PS1 to PS3 are provided for supplying one of the output voltages from the battery packs 2, 3 as a drive voltage, based on the detected result outputted from each of the battery packs 2, 3.</p> |
