This small rechargeable flat battery pack provides 2.5Amp Hours of 12 Volt battery power and comes with an AC adapter and automotivecigarette cord for charging. Includes Velcro tabs for easy mounting. Recharges in about 4-5 hours.You can replace the NiMh AAbatteries with regular alkaline batteries if you're in a pinch. Self regulating and switches to trickle charge automatically so there is noover charge. Fitted with a 4 pin XLR female for interface to compatible professional equipment. The perfect solution for portable cameraor lighting needs.