Package Includes: 1* 2800mAh 12V lithium battery pack, 1* battery charger, 1* cable connector, 2* DC5521 extension cord,2*DC5521 male/female connector. The maximum output current is 3A (MAX) Battery size: 67*57*20mm (L*W*T),Battery weight about 175g, battery cable length 15cm, charger cable length 90cm.Please confirm if the size is suitable for your device before order Built-in Safety Chip: This 2800mAh 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 High-Capacity 12V Lithium Battery: Experience the power of our 12v 2.6a lithium battery, featuring a robust 2600mAh capacity for reliable energy delivery during extensive DIY projects. This high-performance battery is designed to support your creativity with consistent and stable output Long using life: This 12V battery pack build with lithium-ion battery, no memory effect, is of over 1000 times charge-discharge cycles We back this 12V rechargeable battery with a 12-month warranty. Our dedicated customer support team is ready to assist you with any questions you may have 1*12v rechargeable battery 2800mAh/98.2Wh, 1*12V battery charger, 1* cable connector and 2*extension cord,Input:12.6/1A,Output:9-12.5V/3A Max