A card of two Energizer A76 alkaline button cells. The A76 is the same size as the LR44, AG13 and 357-type cells: 1.5 V, about 11.6 mm in diameter and 5.4 mm high. These small batteries are used in calculators, digital callipers and thermometers, laser pointers, small toys, key-ring torches, some watches and remote controls. Check the code on the battery you are replacing, since several button-cell sizes look alike. Keep button batteries away from small children, as they are dangerous if swallowed. Button cells are also packed in many toys and novelty items, so it is worth keeping a spare card in the drawer. Fit the cell with the flat, marked positive side as shown in the device.