42170 3100mAh Battery for Braun Oral B 3745 3728 3762 7000 3731 P7000 D25 D28 Electric Toothbrush 1.2V 42mm X 17mm Batteries - AliExpress
Replacement Toothbrush Battery for some Braun Oral-B Triumph Type 3731 3738 3745 602589723648 | eBay
Replacement Battery For Braun Oral B 3745 3728 3762 7000 3731 P7000 D25 D28 Electric Toothbrush 1.2v 42mm X 17mm Batteries - Rechargeable Batteries - AliExpress
Oral-B Triumph Professional Care 3731 Toothbrush Battery Narrow Tabs 50mmLx17mmD | eBay
Oral B Triumph 3731 Charger Mount - Etsy
Amazon.com: Replacement Battery Part No.3731,3738 for Oral-B Professional Care 8000,Professional Care 8300,Professional Care 8500,Professional Care 9500,Triumph 4000,Triumph 5000,Triumph 9000,9400,9500,9900 : Health & Household
Braun Oral-B Triumph v1 Battery Replacement Guide
Amazon.com: FDK Replacement Battery Compatible with Braun Oral-b Triumph Professional Care (Type 3731 or 3745) Toothbrush (48mm Long, 17mm Diameter, 2700mAh) : Everything Else