Battery Type: Ni-MH Voltage: 7.2V Capacity: 4000mAh Factory outlet, you can get the best deal and professional after-sale service FCC, CE and RoHS certified, 100% compatible with the originals and may exceed the performance of OEM products UK/EU Charger Input: AC100-240V Output: 1.2-18V/1A Replacement Part: Dewalt DE9057, DE9085, DW9057 Compatible Models: Dewalt DW920K, DW920K-2, DW920K2, DW925K, DW925K-2, DW925K2, DW968K Note: It's recommended that the battery should be fully charged and discharged 3 times after you receive the battery. For transport safety, our batteries are not fully charged before leave the factory. After use, please charge the battery after cooling. Remain red: charging Remain green: full charged Flashing red: bad connected, high temperature or reverse connect.