Specification:
1:18V 9.0Ah Li-Ion backup battery for DeWalt 18V XR tool
2:The high-capacity design extends working hours, which is equivalent to the working time of a 1.8PCS 5Ah battery
3:With LED indicate lights is percent capacity display, Avoid excessive use and improve working life
4:Perfect for all Dewalt 18V Power Tools
5:Over-Charge protection / Over-discharge protection / Over-current protection / Short-circuit protection