3.0V Button Battery, VL621/1025/VL1216, VL1220, VL1225, VL1616, VL1620, VL1632, VL2012/2025 Models Nominal voltage: 3.0VButton-cellNominal capacity: 40mAhStandard charge ... , VL1220, VL1225, VL1616, VL1620, VL1632, VL2012 and VL2025 Button-cell Battery