The FinePower coin cell battery (CR1620) with an operating voltage of 3 V has a capacity of 70 mAh. This power cell is suitable for toys, smoke detectors, and many other devices. Installing it together with an old battery risks rapid discharge and improper operation of the device.
The polarity markings are indicated on the FinePower coin cell (CR1620) body for easy and correct installation. The battery must not be recharged, disassembled, or placed near hot surfaces and open flames. Thanks to high energy density, lithium cells retain their operational characteristics when stored in a dry, warm environment.