Battery charger
Videos
A battery charger, recharger, or simply charger, is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long a
Charging a 12 V lead–acid car battery
A smartphone plugged in to an AC adapter for charging
A simple charger for Ni–Cd batteries that outputs 300 mA of 12 V DC
Example of a smart charger for AA and AAA batteries with integrated display for status monitoring
Universal charger
Videos
Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices.
Mobile phone charger plugs. From left to right: Samsung proprietary charging plug, USB Mini-B plug, Nokia charger plug used on the E71, Nokia Pop-Port