What is the voltage of a button battery?
Strictly speaking, the button battery is divided into rechargeable and non-rechargeable, of which 3V is lithium manganese batteries, 1.5V is alkaline manganese batteries.
1.5V → electronic form, quartz watch above, 3V → computer with the CR2032, CR2025
Life common to the button battery 1.5V, 3V, there are rare cases is 5V.
Rechargeable button batteries, 1.2V nickel-nickel hydride nickel-cadmium charge, there are 3.6V rechargeable lithium-ion button batteries.
