Amazon.com: FDK OEM NiMH Replacement Battery Compatible with Braun Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) : Health & Household
Amazon.com: HQRP 49x17mm Battery Compatible with Braun Triumph ProCare 9900 9500 9400 9000 3731 Toothbrush Replacement : Health & Household