Replacing the battery in a Philips HQ 7740 Coolskin
Philips HQ673/17 Coolskin NIVEA For Men Men's Electric Shaver
Battery for Philips Philishave Cool Skin HQ5615 * Battery Discount.com: Get the full power for rechargable batteries
Philips Lifeline, Life Systems Replacement Battery part number 1870107 – BBM Battery
Amazon.com: HQRP Battery compatible with Philips Norelco 6756X 6826XL 6828XL 6829XL 6846XL 6848XL Razor/Shaver plus Screwdriver and Coaster : Beauty & Personal Care