A multi-battery automatic charging circuit with individual regulator is
further provided with one secondary or more than one output interface to
convert an AC source via a rectifier into a DC charging source, thus to
supply power to an external rechargeable device or a DC load of different
voltage through a tap of the circuit specific voltage; or alternatively,
a primary battery, or a rechargeable battery provided with storage
capacity, or any other rechargeable device generally available in the
market is placed in the battery holder provided otherwise for the
placement of rechargeable batteries to charge the external rechargeable
device or to supply power to a DC load.