The FinePower Ultra 9V (6LR61) battery with an operating voltage of 9 V has a capacity of 550 mAh. The power cell is suitable for toys, smoke detectors, radios, and many other devices. Installing it alongside an old battery may result in accelerated discharge and improper device operation.
The FinePower Ultra 9V (6LR61) body clearly marks polarities for easy and correct installation. The battery must not be recharged, disassembled, or placed near hot surfaces or open flames. Alkaline power cells retain their charge when stored in a dry, warm environment.