Battery Replacement Guide for Philips Sonicare DiamondClean Toothbrush - YouTube
Amazon.com: Electric Toothbrush Battery Replacement for Philips Sonicare Parts HX6300 HX6500 HX6610 HX6700 HX6900 HX9300 Series with Solder Wire, Disassemble Tools Set and Waterproof Stickers 800mAh : Health & Household