Amazon.com : MPF Products 800mAh 4222-036-11290 Battery Replacement Compatible with Philips Sonicare Flexcare HQ8140, HX6530, HX6730, HX6750, HX6920, HX6930, HX6950, HX9140, HX9340, HX9350 Electric Toothbrush : Health & Household
Amazon.com : Upgraded Version: 800 mAh 3.7v Li-ion Electric Toothbrush Replacement Battery Compatible with Philips HX9340 HX6930 HX6750 HX6530 HX6320 HX6950 HX9350 HX6920 HX6910 HX6710 with pins for Circuit Board : Health
680mah Battery For Philips Electric Toothbrush Hx9340 9350 9360 Hx63 65 67 Series Special Battery +number Tracking - Mobile Phone Batteries - AliExpress
Battery Replacement on Electric Toothbrush Philips Sonicare (How to in 4K) - YouTube