The VARTA CR2450 is a 3V lithium coin cell battery with a capacity of 560–620 mAh, providing reliable long-term power for compact electronic devices. Measuring 24.5 × 5 mm and weighing 6.2 g, it uses Li-MnO₂ chemistry, offers up to 10 years shelf life, and operates across a wide -20°C to +70°C temperature range.