CR1632 is the lithium coin cell battery that is commonly used in portable electronics gadgets which consume low power like watches, toys, RFID readers etc.
CR1632 Terminal Description
Pin Number
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