View CR2032 by Energizer Battery Company datasheet for technical specifications, dimensions and more at DigiKey.
4.4.3Open-circuit voltage: Test specimen batteries shall be kept for 8 hours or longer at the ambient temperature specified in Table 1, and then the voltage between both terminals shall be measured at the same ambient temperature with a voltmeter as specified in Subparagraph 4.3.2.
The nominal voltage of the CR2032 battery is 3.0 V, and the cutoff voltage is 2.0 V. Capacity The coulometric capacity is the total Amp-hours available when the battery is discharged at a certain discharge current from 100% SOC to the cut-off voltage.
Features and Specifications. Lithium Coin Cell. Nominal Voltage: 3.0 Volts. Maximum Current: 0.19A. Non - Rechargeable Disposal battery. Typical Capacity: 240 mAh @ 20°C 15kΩ Load. Service Life: ~720 Hrs @20°C 15kΩ Load. Typical Weight: 3.0 grams (0.10 oz.) Operating Temp: -30C to 60C. Self-Discharge: ~1% / year. CR2032 Equivalent
Chemical System: Lithium / Manganese Dioxide (Li/MnO2) Designation: ANSI / NEDA-5004LC, IEC-CR2032. Nominal Voltage: 3.0 Volts. Typical Capacity: 235 mAh (to 2.0 volts) (Rated at 15K ohms at 21°C) Typical Weight: 3.0 grams (0.10 oz.)
CR2032 has a nominal voltage of 3V, a typical capacity of 235 mAh and is 20 mm in diameter and 3.2 mm in height. It has a shelf life of 8-10 years.
Designation: ANSI / NEDA-5004LC, IEC-CR2032 Nominal Voltage: 3.0 Volts Typical Capacity: 235 mAh (to 2.0 volts) (Rated at 15K ohms at 21°C) Typical Weight: 3.0 grams (0.10 oz.) Typical Volume: 1.0 cubic centimeters (0.06 cubic inch) Max Rev Charge: 1 microampere Energy Density: 198 milliwatt hr/g, 653 milliwatt hr/cc Typical Li Content:
The voltage at which a CR2032 battery is considered flat, (or dead) lies between 2.7 – 2.8 volts. The CR2032 battery is a primary battery which means that it cannot be recharged. So, if the battery goes flat, it will need to be replaced with a new CR2032 battery.
CR2032 Battery Nominal Voltage: 3 Volts. Capacity ≈ . 235 mAh. Operating Temperature: 0°C – 60°C. Height: 3.2 mm. Width (Diameter): 20 mm. Chemistry: Lithium Coin *
Here we see that if the CR2032 battery is tasked with providing 0.5 mA (500 microamps) continuously, its output voltage will not deteriorate to 1.6 volts until it has provided 240 mAh. If on the other hand, it must provide 3.0 mA, it can only provide 155 mAh.