About This

• This 20,000mAh battery pack is specifically engineered for 12V and 7.4V heated jackets/vests, compatible with most 12V heated apparel on the market(such as for Milwaukee & DEWBU & Venustas & WULCEA & HECUSMA etc). It comes with two DC adapter cables, fitting common DC plug sizes (5.5mm, 4.0mm). Use the included Type-C to DC step-up adapter cable to work with most 7.4V heated clothing available commercially(such as for ororo & Venustas & Topdot & Gobi heat etc)
• Ultra-long Thermal Retention: Compact yet powerful, the 12V 6400mAh/77Wh(equivalent to 20,000mAh@3.85V) large capacity delivers long-lasting power for your heated jacket/vest — up to 6–10 hours on high, 11–20 hours on medium, and 15–30 hours on low. A single charge meets your all-day daily needs. Whether commuting, working outdoors, or enjoying winter sports, you can rely on non-stop warmth all day long.
• High-speed Recharge in 3.5 Hours: Wamlet battery only takes 3.5 hours to be fully charged with a 20V/1.5A(30W) or higher charger, 60% shorter charging time than other brand batteries.
• CERTIFIED SAFE & MULTI-LAYERED PROTECTION: Safety is our top priority. UL & CE certified, this battery features built-in safeguards against overcharging, overheating, overcurrent, short circuits and Low voltage and over-discharge protection. An advanced battery management system optimizes performance while regulating temperature, ensuring maximum safety and reliability. TSA-compliant for air travel—wear it comfortably or stow it in your carry-on with total peace of mind.
• PLUG & PLAY AUTO-ACTIVATION: Connect your heated device, and this replacement battery pack automatically powers on – no extra on/off button presses needed. When idle, it hibernates automatically to save power, freeing up your hands entirely during cold winter days.
• What You Get: 1 x 20,000mAh Battery Pack, 1 x USB-C Charging Cable, 1 x User Manual, 1 x DC5521 to DC4017 Adapter Cable, 1 x Type-C to DC9V Step-Up Adapter Cable. Choose the right connector for your heated apparel, or plug directly into 5.5mm compatible ports. For any questions or concerns, our 24/7 customer service team is here to assist.

Overview

• Number of Batteries : 1 12V batteries required. (included)
• Brand : Wamlet
• Battery Cell Composition : Lithium Polymer
• Battery Capacity : 20000 Milliamp Hours
• Recommended Uses For Product : Phone