mobile warming single battery mobile warming **no use, no defects, battery only.<br/>msrp $40<br/><li> compatible with mobile warming vests, jackets and gloves<br/></li><li> can provide up to 10 hours of power depending on heat settings<br/></li><li> lightweight construction<br/></li><li> led power indicators<br/></li><li> easy push button operation </li><br/>