Amazon.com: FDK OEM NiMH Replacement Battery compatible with Braun Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (42L x 17D mm, 2150 mAh) : Health & Household
Braun Oral-B Triumph v1 Battery Replacement Guide
Replacement Toothbrush Battery for some Braun Oral-B Triumph Type 3731 3738 3745 602589723648 | eBay
Braun Oral-B Triumph v1 Battery Replacement Guide
Braun Oral-B ProCare/Triumph Repair: How to replace Rechargeable Battery - YouTube
HSABAT 0 Cycle 42170 Battery for Braun Oral B 3745 3728 3762 7000 3731 P7000 D25 D28 Electric Toothbrush 1.2V 42mm X 17mm - AliExpress
Battery Oral B Electric Toothbrush | Battery Braun Oral B Toothbrush - New 2500mah - Aliexpress
Replacement Oral-B 3731, 3738 Toothbrush Battery | Battery Mart
42170 3100mah 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 620947506818 | eBay
Premium Battery for Oral-B 3738, 3731, Triumph 9900, Professional Care 9500 NEW | eBay