Including 2PCS 7.4V 2200mAh Rechargable LI-Polymer Batteries，two DC head charging cable（Please Charging Batteries for 12 hours before your first use） Charge a full charge for about 2.5-3 hours, working on different heating levels for 2.5-5 hours: charge the battery regularly to prevent excessive damage, remove the charging bank from the gloves before washing or when charging Use for Heated Gloves , Heated Socks, Heated Hats，Battery Ski gloves , Electric Heated Motorcycle gloves，Heated Balaclava Ski Mask，Heated Thermal Underwears Bottoms，The battery is suitable for various 7.4V electronic 7.4V battery pack Using life: 500-600 cycles of charging. Please charge every six months during storage.Please charge the batteries every six months when not use for good maintenance WARRANTY & ORIGIN: Backed by a 2-year manufacturer warranty, manufactured by M Jiuyunmu with quality assurance Power up your heated apparel with this versatile 7.4V 2200mAh lithium-ion rechargeable battery. Specifically designed for compatibility with heated gloves, socks, and thermal underwear, this battery pack delivers reliable warmth when you need it most. With a generous 5000mAh capacity and 7-hour charge time, you can enjoy extended periods of comfortable heating. The compact design measures just 6.7 x 2.99 x 1.5 inches and weighs a mere 6 ounces, making it easily portable. This battery pack comes with a 2-year manufacturer warranty and includes two lithium polymer cells for optimal performance. Whether you're braving cold weather for work or leisure, this rechargeable battery ensures your heated gear performs consistently. The package includes the battery unit with all necessary components for immediate use with compatible heated apparel.