| 摘要 |
The apparatus indicates the charge and discharge of at least one electric battery 2A - 2D supplied by a battery charger 1. It comprises a circuit 4 for measuring the current supplied by the charger, and a circuit 6 for converting this current into signals with frequencies depending on the size of the current. A circuit counts the frequency signals and the result of the count is shown on a display 7, which indicates the instantaneous state of the charge of the battery. <IMAGE>
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