〖Product Use〗Includes 2pcs 7.4V 3500mAh rechargeable lithium polymer batteries for heated gloves, socks, hats, and jackets. A must-have for winter outdoor sports such as skiing, hunting, fishing, and cycling. It will be your indispensable companion in winter, helping you stay warm through the cold season( compatible with Deorfgo, Snow Deer, Baowenqier, Wasoto, Sunwill, Savior, Justfx, as well as Weivioq, Waestcia, and JS LifeStyle heated socks and gloves)

〖Battery Specification〗·Capacity: 3500mAh ·Type: Li-Polymer ·Rated Voltage: 7.4V ·Charging Voltage: 8.4V ·Temperature Range: ·Charging: 0°C ~ 45°C ·Discharging: -20°C ~ +60°C ·Storage: -20°C ~ +35°C ·Current Ratings: ·Standard Charging: 0.5C ·Max. Charging/Discharging Current: 1C ·Protection IC Parameters: ·Overcharge ·Protection Voltage: 4.20V ±0.05V ·Overdischarge Protection Voltage: 2.7V ±0.1 ·Max. Charge Current: 2A

〖Safe Design and Materials〗Compared with ordinary materials on the market, KELINGDUN’s products can withstand high temperatures up to 60°C. This battery uses lithium-polymer cells certified by UL and FCC, with built-in protections against over-charging, over-discharging, overheating, overcurrent, and short circuits. Leak-proof design, excellent performance, and long cycle life ensure reliability

〖Storage Precautions〗Keep the battery at 40%-60% charge during long-term storage.Recharge every 3 months after initial use.Store in a cool, dry place.·Warnings:1.Do not crush, puncture, incinerate, or short-circuit. 2.Remove the battery from garments before washing. 3.Keep away from flammable materials during charging. 4.Remove batteries from heated gloves/socks while charging or washing

〖What You Get After Purchase?〗 2 × 7.4V 3500mAh Rechargeable Lithium Polymer BatteriesCharging Time: ~4 hours (via female DC jack, 3.5mm outer diameter / 1.35mm inner diameter).Note: Fully charge before first use, and recharge only after complete depletion.24/7 Support from our friendly customer team