Type: Ni-MH (Ni-MH Ones have Much Longer service Life Than Ni-CD ones!) Voltage: 18V Capacity: 3500mAh Replace OEM P/N: MILWAUKEE 48-11-2200, 48-11-2230, 48-11-2232 Chicago Pneumatic 8940158631 Compatible Models: AEG: B 18, BX 18, BXL 18,BXS 18, MX 18, MXS 18,BBM 18 STX, BDSE 18 STX, BDSE 18 T Super Torque,BS 18 X, PN18X,SB2E 18 STX, SB2E 18 T Super Torque, SE2E18T Chicago Pneumatic Power Tools CP8745 MILWAUKEE Power Tools 0521-20, 0521-21, 0521-22, 0522-20, 0522-21, 0522-22, 0522-24, 0522-25, 0522-52, 0523-20, 0523-22, 0524-20, 0524-22, 0524-24, 0524-52, 0622-20, 0622-24, 0624-20, 0780-20, 0880-20, 0901-24, 1109-20, 1109-21, 3109-24, 5361-20, 6310-20..... Notes on the battery: It's recommended that the battery should be fully charged and discharged 3 times after you receive the battery.
eBay