DESCRIPTION Included 2 rechargeable Li-Polymer batteries, 7.4 V 3000 mAh. Approximately 4-5 hours for a full charge and 2.5-10 hours at different heat levels Please remove the batteries from the heated gloves during charging or washing SPECIFICATION Battery Parameters Product Model:JY-574A Nominal Capacity:3000mAh(18.5Wh) Input:Type-C 5V/2A Output:DC 7.4V/2A Battery Type:Li-ion Battery Weight: 100g FITMENT Universal Fit