In addition to powering the expanding line-up of 18V cordless tools and accessories, Makita 18V batteries can help you keep warm in cold, harsh job site conditions. The 18V LXT Cordless Heated Jacket has a power source that accepts Makita 18V LXT and 18V Compact Lithium-Ion batteries for up to 28 hours of heat (with BL1850 battery, sold separately). You can also keep your portable electronic devices charged-up with the convenient on-board USB power port.