DESIGNED FOR HEATED JACKET: This 18400mAh battery pack is designed specifically for 12V heated jacket. It is compatible with most 12V heated clothing. The battery comes with two DC adapter cables to fit a wide range of DC plug sizes (3.5mm, 3.8mm, and 4.0mm). Note: Not compatible with 5V or 7.4V heated clothing. LONG LASTING WARMTH: Compact and powerful, 18400mAh large capacity provides long-lasting power for your heated clothing. (56 hours on high, 78 hours on medium, and up to 1014 hours on low). One charge can meet your daily use needs for a day. Whether you're commuting, working outdoors, or enjoying winter sports, you can count on all-day warmth. SMART WAKE-UP & LED DISPLAY: Once plugged into your heated apparel, the battery automatically powers onjust press your clothings power button to start heating. When not in use, it enters sleep mode to conserve energy. The precise and intuitive LED display keeps you informed with real-time updates on remaining battery life