Package includes: 1*12V 5200mAh battery pack, 1*12V battery charger. Battery pack size 70*55*40mm (L*W*T), battery weight about 295g, battery cable length 18cm, 12V charger cable length 90cm. Battery Compatible with: Wireless Cameras, Walkie-Talkies, Digital Cameras, Camcorders, Video Cameras, Bluetooth devices, CD Players, MD players, Portable DVDs, MP3 Players, LED Strip, CCTV Camera, Electronic Piano, Optical Network Unit, Router, Small Bluetooth Amp Premium battery pack: Build in protection board, prevent battery from over-charge, over-discharge, over-voltage and short-circuit. Each battery pack is build with premium batteries to provide your devices powerful energy. Long using life: this 12V battery pack build with lithium-ion battery, no memory effect, is of over 800 times charge-discharge cycles. After sales service: please feel freely to contact with us for customer support if you have any probelm with the product. Your inquiry will have our prompt reply.