3.0V CR-2032 Lithium Button Cell Batteries Ideal for Red Dot sights and illuminated Reticle scopes. Designed for Watches Calculators Abtronic devices and more! The high nominal voltage of 3V means that now just one battery is enough to support a C-MOS S-RAM. These batteries will last for relatively long periods. Expect 4 to 5 years in low drain usage and a steady reliable current is ensured. The positive material is made of manganese dioxide which is chemically very stable resulting in the long service life of the battery. The electrolyte used in these Lithium batteries is a unique non-aqueous electrolyte that safeguards against leakage. Their new high energy density design makes them lightweight very compact and powerful. They have been specially developed to perform at their capacity under the extremely wide temperature range of -20C to +60C (-4 to +140 F). Features: Dimensions (mm): 20 x 3.2 (D x H) Nominal Voltage (v): 3V Nominal Capacity (mAh): 210 mAh Standard Current (mA): 0.2 mA Continous Current (Max) (mA): 0.5 mA Pulse Current (Max) (mA): 15 mA