In addition to powering the expanding line-up of 18V cordless tools and accessories, Makita 18V batteries can help you keep cooler in hot job site conditions. The 18V LXT® Cordless Reflective Fan Jacket has a power source that accepts Makita 18V LXT® and 18V Compact Lithium-Ion batteries (sold separately) that power two recessed fan units located on the left and right sides of the jacket. The fan units provide air circulation inside the jacket for up to 15 hours of run time on the high setting when using a 5.0Ah battery (BL1850). It also features two ice pack storage compartments on the back of the jacket for increased cooling. You can also keep your portable electronic devices charged-up with the convenient on-board USB power port. The Fan Jacket has three air flow modes plus turbo mode so you can adjust the air flow to the work conditions. It features Titanium-coated polyester to reflect ultraviolet and infrared rays, and double-layered shoulder area for added comfort and durability. The knitted cuffs and waist to provide a better fit, which helps keep the air circulating inside the jacket. It has 5 pockets including two zippered chest pockets with a hole that enables mobile devices to be stored and charged while wearing the jacket (USB charging cable is optional). The battery slides onto the power source, which features an integrated belt clip so it's out of your way but within reach for quick and easy access. It is an ideal solution for working in hot weather conditions, or in close quarters including attic spaces. It’s part of Makita’s expanding 18V Lithium-Ion system, the world’s largest cordless tool system powered by 18V Lithium-Ion slide-style batteries. Makita 18V Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger.