| 摘要 |
PURPOSE: To quickly detect and display the present charging voltage with a charging battery pack proper. CONSTITUTION: The surface of a case with a built-in charging battery 2 and a voltage detection circuit 8 is provided with a display section 7 connected to the circuit 8. A switch 4 is turned on, thereby detecting the voltage of the battery 2 with the circuit 8, and the detected voltage is shown on the section 7. |
