Product Description
CR1620 Battery
Replacement battery for CI 3400, 8300, 8510, 8515, 8525 and 8528 calculators (requires one).
CR1620 battery is a button/coin cell featuring physical dimensions of (DxH) 16.0 x 2.0 mm (~0.62992 x 0.78740 inches), a nominal voltage of 3.0 volts, cutoff voltage of 2.0 volts, and a nominal capacity of 65-80 mAh, although nominal capacity depends very much on the battery age, discharge rate, actual cutoff voltage of the powered device and similar.
The standard discharge rate of the CR1620 battery is usually ~0.1 mA, with a maximum discharge rate of ~1.0 mA - these values differ between manufacturers, but not much. However, any increase in the discharge rate leads to a decrease in the actual capacity of the battery.
CR1620 battery is a non-rechargeable manganese-dioxide lithium battery, with most models featuring a self-discharge rate at room temperature of only 1-2% per year and with premium models having a discharge rate of 1% or less, making them suitable as a memory battery in various devices. However, if the temperature of the battery is increased, so is the self-discharge rate increased.
