That little beep from your PC at 2am? Or the car key fob that suddenly won't turn the engine over? Chances are it's a flat CR2032. These Sansai lithium button cells keep your motherboard memory backup, camera, calculator, remote, thermometer, or watch running at a steady 3V. Two in a pack so you've got a spare in the drawer when the next one goes. Operating range from -40°C to 60°C, so they hold up in a hot ute or a cold garage. Flat discharge curve means consistent power right to the end. Keep them well away from kids – small batteries are a genuine choking hazard
