Braun Oral-B Professional Care 9900 Triumph Ni-MH battery Replacement - iFixit Repair Guide
Braun Oral B TRIUMPH V2 Toothbrush Battery + Replacement Service and MORE | eBay
Braun Oral-B Triumph Professional Care Toothbrush Repair Battery 43mm Lx17mm D | eBay
Amazon.com: Replacement Battery Compatible with Braun Oral-b Professional Care Toothbrush, 1150 mAh, Panasonic NiMH, 42 mm Long, 14 mm Diameter : Health & Household