如果负载电阻被直接连接到伏特计的输入端子，通过继电器触点的电流会产生电压降，测得的电池电压将存在误差。
If the load resistor was connected directly across the voltmeter input terminals, the current through the relay contacts would cause a voltage drop and the measured cell voltage would be in error.
电池温度感知器输入电压低于可接受范围。
Battery temperature sensor input voltage below an acceptable range.
具有很宽的电压输入范围，减少电池运行机会，延长电池寿命。
Wide input voltage range to minimize chances of battery cutting in and extend battery life.
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