Amazon : Energizer 5 Pack CR2430 3V Lithium Batteries :
Super fresh genuine Energizer CR2430 3v batteries. Works for: Watches, computer motherboards, calculators, PDAs, electronic organizers, garage door openers, toys, games, door chimes, pet collars, LED lights, sporting goods, pedometers, calorie counters, stopwatches and medical devices and all other devices that requires this