PORTABLE BATTERY OPERATED POWER SUPPLY

摘要

A portable battery-powered power supply or charger for use with electronic devices containing a primary or secondary battery. In order to control the current flow into and out of its battery, the portable power supply uses a bidirectional charge controller. The battery is installed in a housing which preferably has a single connector port to which a flexible current lead may be plugged. The bidirectional charge controller enables the battery either to supply current to the electronic device, to charge the device's internal battery, or it allows the battery, if it is a secondary battery, to be charged by connection to an externally powered charger, such as a wall mains adapter. Both of these functions are achieved through a single connection port.