CR2032 Lithium cell are 3 volt coin batteries, 20 mm in diameter and 3.2 mm thick. These batteries are used to power CMOs memory in computer motherboards, as well as small portable electronics devices such as wrist watches, pocket calculators, artificial cardiac pacemakers, implantable cardiac defibrillators, automobile key less entry transmitters, and hearing aids. We carry Energizer, Panasonic, Maxell, Sony, Rayovac and GI brands, in 5 separate tear-strip cards, as well as in bulk trays.