Amazon.com: Synergy Digital Shaver Battery, Works with Philips 4222-036-11290 Shaver, (Li-Ion, 3.7V, 750 mAh) Ultra High Capacity, Compatible with Arcitec 036-11290 Battery : Health & Household
2.4V AA Battery For Philips shaver Philishave HQ4805 HQ4807 HQ4821 HQ4822 HQ4825 | eBay
Amazon.com : 800mAh Electric Toothbrush Battery Compatible with Philips Sonicare Replacement Parts HX89 HX91 HX99 Series with Solder Wire and Rapid Disassemble Tools Set : Health & Household