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1.The battery-conserving switch is designed to save energy when the device is not in use.
电池节能开关设计用来在设备不使用时节省能源。
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2. The new model has a battery-conserving switch that automatically shuts off the power when the device is not in use.
新款模型有一个电池节能开关，当设备不使用时会自动关闭电源。
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3.The battery-conserving switch can also be used to prevent overcharging of the batteries, which can extend their lifespan.
电池节能开关还可以用于防止电池过度充电，这可以延长电池的使用寿命。