Panasonic Batteries CR Non-Rechargeable Lithium Metal Batteries offer a 3V nominal voltage rating, 1000mAh to 2700mAh nominal capacity range, and 2.5mA continuous drain. These CR batteries are suitable for infrastructure devices that require reliable, long-life power. They include a spiral design for high-rate / pulse discharge, cylindrical cell, and a positive temperature coefficient (PTC) for increased safety. Panasonic CR Non-Rechargeable Lithium Metal Batteries are ideal for use in smoke and carbon monoxide detectors, gas and water meters, security devices, and IoT/sensing devices.