Button cell battery Voltcraft CR1620 3V 70mAh lithium coin cell

Voltcraft CR1620 3V 70mAh lithium coin cell is a compact power source intended for small, low-drain electronic devices. The button cell delivers a stable 3-volt output and a nominal capacity of 70 mAh in a thin, coin-shaped form factor, suitable for applications where size and reliable voltage are important. The chemistry and construction are optimized for long shelf life and predictable performance over extended storage and intermittent use.

Advantages

This lithium coin cell offers consistent voltage under light to moderate loads, a slim profile that fits standard CR1620 compartments, and low self-discharge for extended storage. Its stable discharge curve supports devices that require a steady 3V supply, and the compact dimensions facilitate simple replacement without modifying device housings.

Suitable for

• Wrist watches and small timepieces
• Calculators and basic electronic displays
• Key fobs and small remote controls
• Low-power sensors, medical devices, and measurement sticks
• Backup memory for small electronics and CMOS settings

Key specifications

• Nominal voltage: 3 V
• Nominal capacity: 70 mAh
• Chemistry: Lithium manganese dioxide (Li-MnO2) coin cell
• Form factor: Button/coin cell, thin profile
• Typical applications: Low-drain portable electronics
• Shelf life: Long-term storage capability due to low self-discharge

How to use

Install the coin cell observing correct polarity as marked on the device and battery: the positive (+) face usually sits outward. Ensure the battery compartment is clean and free of corrosion before inserting the new cell. For devices with a holder or screw-down cover, secure the battery in place according to the manufacturer’s instructions. Dispose of used batteries following local regulations for lithium batteries; do not incinerate or expose to high heat.

Usage recommendations

Store unused batteries in a cool, dry place away from metal objects to avoid short circuits. Replace all batteries of the same type at once when a device requires multiple cells, and avoid mixing new and old cells. Keep out of reach of children and seek immediate medical advice if swallowed.