Button cell Size: 20.0*1.6mm Nominal voltage: 3v Nominal capacity: 80mah Standard current: 0.1ma Continuous current(max): 0.5ma Pulse current(max): 10ma Weight: 1.8g Size: 20.0*1.6mm Nominal voltage: 3v Nominal capacity: 80mah Standard current: 0.1ma Continuous current(max): 0.5ma Pulse current(max): 10ma Weight: 1.8g