Specification: 1:18V 6.0Ah Li-Ion backup battery for DeWalt 18V XR tool 2：LED indicator allows you to check the state of battery （When the LED display has only one grid, please charge it in time. Please do not exhaust the battery.） 3：No memory effect on the battery 4:Perfect for all Dewalt 18V Power Tools 5:Over-Charge protection / Over-discharge protection / Over-current protection / Short-circuit protection 6：One year warranty 7:with battery Protective cap,cover it protects the battery and protects against dust.