Kastar 3-Pack NP-F550 / NP-F570 Battery and AC Wall Charger Replacement for Sound Devices 633 664 688, Sound Devices 702 702T 722 744T 788T, Sound...

Battery Type: Lithium-Ion; Battery Voltage: 7.4V; Battery Capacity: 2900mAh. This AC wall charger with foldable flat pin for easy storage. The charger Input: AC 100~240V 50~60Hz; Output: DC 8.4V 600mA. LED indicate: Red light for charging; Green light for standby or full-charge.