The FinePower Ultra lithium battery with a capacity of 220 mAh is suitable for smoke detectors, toys, radios, or other small devices. Its voltage is 3 V, which should be taken into account when installing the battery into a device. The FinePower Ultra lithium CR battery comes in a blister pack of 1 piece. It can be used at temperatures from -18 to 50 °C. The recommended storage temperature is no more than 30 °C. The battery does not contain mercury and cadmium, making it safe for people and the environment.