| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery case capable of checking voltage of each battery. SOLUTION: The battery case 25 comprises an LED 31 for indicating a voltage level of a battery 29 and a pushbutton switch 32 for switching ON/OFF of the current to the LED 3, which are disposed near the battery 29. The pushbutton switch 32 is connected to a negative terminal 50 and the LED 31. The LED 31 is connected to a positive terminal 51 through a resistor. When the pushbutton switch 32 is pushed, a current flows from the battery 29 to the LED 31, enabling the voltage level of the battery 29 to be checked through the luminescence intensity of the LED 31. COPYRIGHT: (C)2004,JPO
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