Brand : Zitay Name: FW50 quick release plate external battery Type: Sony Mirrorless Size: 135mmx73mmx22mm Weight: 430g Charging voltage: 12.6V Charging current: 2A Output voltage: 9V-12.6V Material: aluminum alloy for aerospace parts Capacity: 10.8V 6800mAH 75WH Operating temperature: -20℃~50℃