HQRP 42mm Long Battery for Braun Oral-B 5000, 3745, 3761, 3762, 4736, 5000 Toothbrush Repair 2000mAh Oralb Professional Care Triumph Sanyo 346 Sanyo346 Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 1.2V, Capacity: 2000mAh; Ni-Mh; 100% compatible with Original Battery; Battery size: 42mm x 17mm; The Battery is 1 5/8 inch or 42 mm long. Caution: Check the Length of Your Old Battery Before Purchase as Oral-b uses either 48 mm or 42 mm Long Battery in this Model.