Button batteries are small, flat batteries used to power items that don’t use a lot of energy. Examples include watches, hearing-aids and key fobs, and they are fitted as backup batteries in cameras and clocks. Inserting replacement button batteries in your electrical items is relatively simple, helped by the clear polarity labeling on the button battery.
Things You’ll Need : Small screwdriver
- Look carefully at the button cell battery compartment, or the reverse side of the battery cover, to check which way to insert your button battery.