cordless portable telephone, power is consumed when the bell rings due to an incoming call. Power is also consumed when the portable telephone is used with the battery charger mounted. When the electrical equipment is a laptop microcomputer, power is consumed when the computer power switch is ...
Small electrical apparatus such as an electric shaver can be conveniently used as a cordless unit when powered with dry cell or other batteries. Electrical apparatus powered by non-rechargeable dry cell batteries have a removable battery configuration to allow replacement of exhausted batteries. On the...