Ideal for toys & games, blood glucose monitors, digital thermometers, pedometers, calorie counters, stopwatches, door chimes, scales, calculators, PDA's, electronic organisers, watches, garage door openers, keyless entry. Powerful and long-lasting, the Energizer CR2032 Lithium Coin Cell Battery is one of the most dependable coin cells on the market! Boasting a sizable 240 mAh capacity, this 3-Volt coin cell delivers all the energy you need to power a wide range of devices, from watches, to calculators, to car alarms. The battery's Lithium Manganese Dioxide (Li/MnO2) chemistry not only gives it a superior energy density, but makes it extremely safe to use compared to cells that use unstable chemicals like mercury.