Battery Charger For AA/AAA/9V Multiple Charger MP-709 Description: -This charger can charge 2 or 4pcs AA/AAA and 1-2pcs 6F22(9V) NI-MH/NI-CD rechargeable batteries. -Two LEDs show the charging process of the batteries,they would not turn off after the batteries are full charged. -The constant current and voltage keep the battery longer using life. -Charge for 2pcs of batteries in series – It can not charge single battery.