Battery: Type: Ni-MH Voltage: 18V Capacity: 4000mAh No memory effect, can be charged or discharged as needed without loss of capacity UK/EU charger Input: AC100-240V Output: 27V/1A Replace: Bosch: BAT025, BAT026,BAT160,BAT180,BAT181,BAT189,2607335266, 2 607 335 278, 2 607 335 536,2607335680,2607335688,2607335696, 2 610 909 020 Fit for: Bosch: GSB 18 VE-2,GDS18V-HT, GSR 18 VE-2, PSB 18VE, PSR 18VE, 13618, 13618-2G, 15618, 1644, 1644-24, 1644B-24, 1644K, 1644K-24, 1646K, 1659K, 1659RK, 1662, 1662B, 1662K, 1662K-24, 1688K-24, 22618, 23618, 32618, 32618-RT, 33618, 33618-2G, 3453,3453-01, 35618,3860CK, 3860CRK, 3860K, 3860RK, 3870, 3870-04, 52318, 52318B, 53518, 53518B Note: It's recommended that the battery should be fully charged and discharged 3 times after you receive the battery.