Description of a Battery charger
A Battery charger is mostly associated with the rechargeable batteries. In general battery chargers are used to charge the rechargeable batteries. Batteries or dry cells are manufactured to supply steady and uninterrupted D.C power to different modern day gadgets that run with electrical energy.
Many of the alkaline-batteries are discarded after being used for a single time. But there are also some which can be charged again and again after every use and are known as “rechargeable batteries”. These should be kept at fully charged condition so as to meet the D.C. power demand whenever needed. Therefore suitable battery chargers are required to charge those types. The charge current depends upon the technology and capacity of the battery being charged. For example, the current that should be applied to recharge a 12 V car battery will be very different from the current for a mobile phone battery. The simple charger does not alter its output based on time or the charge on the battery.
This simplicity means that a simple charger is inexpensive, but there is a trade-off in quality. Since a battery charger is intended to be connected to a battery, it may not have voltage regulation or filtering of the DC voltage output. Battery chargers equipped with both voltage regulation and filtering may be identified as battery eliminators. Thus a battery charger is a device used to put energy into a secondary cell or (rechargeable) battery by forcing an electric current through it.
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