Energizer Lithium Coin, CR2032 x 2 Also known as: DL2032, BR2032, KL2032, L2032, ECR2032, 5004LC, KCR2032, E-CR2032, KECR2032, SB-T15. This flat, circular 3-volt lithium battery is primarily used to power car security systems, handheld organizers, and glucometers.