The Mobile Warming 7.4v Replacement 2in1 Glove Batteries only use the highest quality Lithium-Ion batteries to ensure long lasting power and battery life. Mobile Warming's batteries are designed to power your Mobile Warming product for hours ensuring you stay warm and comfortable. These 7.4volt batteries are only compatible with Mobile Warming 7.4volt Gloves.FeaturesRating: 7.4volts, 2,000m AhInput: DC 8.4volt, 1,000mACharge Time: 3-4hrsSize Inches: 2.0in x 1.7in x 0.35in