This product is designed for the rapid charger request of high capacity Ni-Cd and Ni-MH battery. Adopted the advanced cut-off system for the rapid charge; and an additional secondary backup termination used in this system. All kinds of AA and AAA Ni-MH batteries can be full charge in 3.5 hours. Q990A battery charger with an adaptor,car socket,USB access,LED displaybattery charger with an adaptor,car socket,USB access,LED display