Cameron Sino Brand-New and High Quality Replacement Battery for Oral-B Triumph 4000 Triumph 5000 Triumph 9000 Triumph 9400 Triumph 9500 Triumph 9900 Product Type: Ni-MH , Volts: 1.2 ,Capacity: 2500mAh/3.0Wh Dimension: 49.80 x 17.30 x 17.30mm ,Weight: 60g All Products are Cetificated with ISO9001, RoHS, and CE. Compatible model NO.:  ORAL-B Professional Care 8000 Professional Care 8300 Professional Care 8500 Professional Care 9500 Triumph 4000 Triumph 5000 Triumph 9000 Triumph 9400 Triumph 9500 Triumph 9900 Compatible Part Numbers:  ORAL-B 3731 3738 Please ensure both model and battery Compatible Part Numbers:  are matched with your device before purchasing.