Capacity: 4000mAh. 

Built-in ON/OFF switch to save power usage 
Input voltage: 12.6V
Input current:350ma (standard) / 1000ma
Output voltage: 12.6-10.80V
Output current:1-2A
The charger input 110-220 - v  
The charger output:12.6 V, 500mA
 
Line interface specification 5.5 * 2.1 MM
Product life: Circulation charge and discharge are more than 500 times.

Package include:
1 X 12V DC 4000mAh Li-ion Battery
1 X AC Adapter

Battery charging method:
@@@ please charge the battery first before use.@@@
1.Turn on the battery lamp, it shows red. Connect the plug on the wall, the plug lamp turns green.
2.When starts charging, the plug lamp is red. When the battery is fully charged, the battery lamp is still red, the plug lamp turns green.
3.In general, it needs more than 3-4 hours of charging.

Notes:
1.The lithium battery shall be put in a cool and dry place; if the battery is not used for more than three months, it shall be charged once so as to guarantee the service life.
2.During use, guard against water, damp or electrostatic; keep away from heat.
3.The battery is forbidden to throw into fire or heat.
4.The battery is not resistant to high temperature, can't be exposed to the sun, can't be used in high temperature environment; operating temperature is below 50°C.