SPECIALIZED BATTERY FOR HEATED VESTOur heated vest battery pack is tailor-made for heated jackets, heated vests, and heated pants. It has USB, Type-C, and a more stable 7.4V DC output port. This battery pack is carefully designed to ensure perfect compatibility with most 7.4v heated clothing on the market (compatible with ORORO and Venustas heated clothing). Note: Not suitable for 5V heating devices HIGH CAPACITY & LONG-LASTING BATTERY LIFE:With its high capacity, heated jacket battery pack provides impressive longevity while remaining compact. On high settings, heated vest battery pack can sustain warmth for 5-7 hours, 7-10 hours on medium, and an impressive 10-15 hours on low settings. Whether you're hitting the slopes, walking your dog, or just enjoying a casual stroll, our battery ensures you stay warm for longer periods. SAFE & ASSURANCE:Our power bank for heated vest is built with high-quality lithium polymer and smart chip technology, achieving both UL and CE certificat