3 volts.
The main component of CR2032 button battery is manganese dioxide, which is a lithium manganese battery. It is mainly used in some computer and watch motherboards and electronic instruments. There are many main technical parameters, including rated voltage, rated capacity, instantaneous short circuit current, open circuit voltage, storage temperature, applicable temperature, standard weight and battery life. -Discharge rate, test life and other parameters.
Detailed information:
Remarks:
1. Before use, first check whether the electrical appliance matches the battery.
2. Before installation, check the terminals of the coin cell battery, the devices used and their contacts to ensure cleanliness and good conductivity. The devices used cannotcause short circuits.
3. Please clearly recognize the positive and negative pole marks during installation. When using, avoid short circuit and poor connection of positive and negative poles.
4. Do not mix new button batteries with old button batteries, and do not mix batteries of different brands and varieties, so as not to affect the normal use of the battery.
5. Do not heat, charge or crush button batteries to avoid damage, leakage, explosion, etc.
Baidu Encyclopedia-CR2032
Baidu Encyclopedia-Button battery