Energizer CR2016 Button Battery, 3 V, 20 mm Diameter, 2 Pack

This button battery is a lithium coin cell designed to provide a stable 3.0 V supply for compact, low-drain electronic devices. It uses a lithium/manganese dioxide chemistry to deliver usable energy across a wide temperature range and is manufactured to recognised industry designation standards for consistent performance in small consumer and industrial equipment.

• 90 mAh typical capacity for extended operating time
• 1 μA maximum reverse charge to limit unintended charging
• Low self-discharge of ∼1%/year for long shelf life
• Operates between -30 °C and 60 °C for varied environments
• Energy density 122 mW·hr/g to optimise energy per mass

• Suitable for watches and fitness trackers requiring small cells
• Ideal for remote key fobs and car key transmitters
• Used with small medical devices demanding stable voltage
• Can be used for memory backup in Compact electronics
• Appropriate for calculators and small household remotes

It loses approximately 1% of capacity per year when unused.

The maximum reverse charge current is 1 microampere (1 μA).

Pulse testing shows it can supply short bursts such as 2 s pulses multiple times per day with modest voltage drop under 400 Ω pulses.

Keep out of reach of children and design compartments requiring a tool or two independent movements to open.