Portable solar charger for charging e.g. 12V/1.2Ah battery of screw gun, has voltage converter with output connector subjected to output voltage and connected to external charger of slave battery to recharge slave battery by master battery

摘要

The solar charger (1) has a master battery (5) e.g. gelled electrolyte lead battery, connected to a small size solar panel (2) for continuously storing electrical energy produced by the panel. A voltage converter (7) transforms voltage of the master battery into an output voltage (VS) compatible with voltage of an external charger (9) of a slave battery (10). The converter has an output connector (8) subjected to the output voltage, where the output connector is connected to the external charger in order to assure recharging of the slave battery by the master battery. An independent claim is also included for a method for recharging a slave battery.