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Braun Oral-B Professional Care 9900 Triumph Ni-MH battery Replacement - iFixit Repair Guide
Oral-B Triumph Professional Care Toothbrush Repair Battery, FDK OEM 43mmLx17mmD 620947506672 | eBay
Braun Oral-B Triumph Professional Care Toothbrush Repair Battery 43x17mm, FDK 620947506931 | eBay