Lithium manganese battery: full name lithium-manganese dioxide battery. The lithium manganese primary battery uses lithium metal as a cathode and an anode manganese dioxide, and is dissolved in an organic solvent with a lithium salt. Small lithium batteries are very common, portable electronic devices such as handheld computers, watches, camcorders, digital cameras, thermometers, calculators, laptop BIOS, communication devices, remote control door locks. They come in many shapes and sizes, with the common variety, 3 volt "coin" type manganese varieties, generally 20 mm in diameter and 1. 6-4 mm thick. The heavy-duty power requirements of many of these devices make lithium-ion batteries a particularly attractive option. Lithium batteries, in particular, can easily support the current needs of short-lived, heavy-duty devices such as digital cameras, and they maintain a longer voltage than alkaline batteries.