The Warming Store: Diverse range of cold weather products to keep people and pets warm!  The WarmingStore.com The ActionHeat 5V Battery Heated Base Layer Shirts are revolutionary in the world of heated clothing. Using the patented 5V signal technology, it allows for most 5V battery to be used with the ActionHeat garments. The ActionHeat heated shirt comes with a powerful ActionHeat 5V Power Bank 6000mAh. This power bank powers your garment and can also charge your phone, tablet, or any USB charged device.