Upgraded Heated Vest Battery Pack:Featuring an enhanced design with a 4mm dc converter, our power bank is compatible with most 7.4v heated clothing, ensuring your current gear's flexibility and convenience. Extended Runtime with 10000mAh Capacity: Backed by a high-capacity 10000mah battery, this heated vest power bank offers 4-8 hours of continuous heat on the lowest setting of heated clothing, perfect for those who need warmth throughout the day.