Sony Lithium Coin Battery- Size CR1620- 1 cell blister. It can be used in a broad range of applications, from quarts watches & clocks, a backup power sources for IC memories requiring long-term reliability over 10 years to PC motherboards, PDA & car keyless entry systems. Features Lightweight, High Voltage & High Energy Density: The battery voltage is 3V, almost double that of conventional batteries. This means that the number of batteries required for equipment can be halved for maximum space saving & weight reduction. Outstanding Temperature Characteristics: Sony’s original organic electrolyte provides superb characteristics over a wide temperature range of -20 to +60 degrees C. Excellent Leakage Resistance The newly developed battery construction & electrolyte ensure maximum leakage resistance over a long span of time. Excellent Long-Term Reliability: Carefully selected stable materials are used for the active material as well as for the electrolyte. These materials are sealed by Sony’s innovative technology to minimize battery self-discharge. Excellent Discharge Characteristics: Voltage characteristics remain stable even for a long period of discharge, greatly improving the reliability of equipment that uses the battery.