Amazon.com: Kastar 1-Pack 2.4V 1000mAh Ni-MH Rechargeable Battery Replacement for Philip Sonicare Diamond Clean HXHX6240 HX-6240-05 150923, Philip Sonicare HX6200, HX3100 Series incl HX3110 : Cell Phones & Accessories
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