10 x Energizer 3v Batteries CR2430 DL2430 5011LC. Voltage: 3V. Diameter: 24mm. Thickness: 3mm. Supplied on sealed cards. Energizer has been a worldwide leader in small electronics batteries for decades. You can rely on the precision engineering of Energizer batteries to power all of your small electronic devices including: books, games, personal organisers, electronic games and toys, computers, personal care, calculators, keyless entry, garage openers, digital thermometers, blood pressure monitors, home health.