ER1850M-Pk10 Lithium Battery 3.6V 3500mAh Battery ( Pack of 10 )

The ER1850M-Pk10 is a 10-pack of 3.6V 3500mAh primary lithium batteries designed to provide dependable long-term power for security systems, alarm equipment, electronic meters, IoT devices, sensors, and other low-power electronic applications. These cylindrical lithium-thionyl chloride (Li-SOCl2) batteries provide a stable nominal voltage of 3.6V and a 3500mAh nominal capacity. The ER18505M battery format measures approximately 18.5 mm in diameter by 50.5 mm in length and weighs approximately 29 to 32 grams per cell, depending on manufacturer configuration. The batteries are non-rechargeable and offer low self-discharge, long storage life, high energy density, and reliable operation across a broad temperature range. The 10-piece package provides convenient replacement stock for equipment requiring compatible ER18505M cells.