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 Electric Toothbrush Battery Replacement – Everyday Knosticism
Para oral b/braun tipo 3731 carregador de escova de dentes elétrica só plug eua|Adaptadores AC/DC| - AliExpress
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