Package includes: 1*12V 3000mAh battery pack, 1*12V battery charger. 1* cable connector, 1* DC5521 male connector to bare lead cable,2*extension cord;size:70*55*20mm,weight:157g,(please confirm if the size and weight are suitable for your device before orde） Strong Compatibility:Small 12 volt lithium battery, compatible with most 12V devices. Compatible with Personal Processing Systems, PDA Personal Data Assistants, Personal Communication Systems, Digital Cameras, Camcorders, MD players, Portable DVDs, MP3 Players, Smart Cards, Aviation Models, LED Strip, CCTV Camera, Electronic Piano, Optical Network Unit, Router, 12V turn signals, Car DVR Smart Chip:3000mAh 12V rechargeable lithium battery,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:The 12v li-ion replacement battery build with lithium-ion battery, no memory effect, is of over 1500 times charge-discharge cycles Customer Support: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 Mspalocell 12V 12v li-ion replacement battery 3000mAh Compatible with 12V Devices RC Car,LED Strip,DIY,Electronic organ,Optical Network Unit,CCTV Camera