Gobi Heat 7.4V Car Charger Easily charge your Gobi 6700mAh or 4400mAh 7.4 volt battery. Just plug one end into your vehicle's 12V outlet and the other end into your Gobi 7.4V battery for continued heat on the go. Features: For use with 7.4V 6700mAh or 4400mAh Gobi batteries with 4.0 mm DC connector Works on all Gobi Jackets, Gobi Hoodies, Gobi Vests, and Gobi Pants Not for use with Gobi Gloves, Gobi Hats, or Gobi Socks Battery sold separately Gobi Heat Car Charger for 7.4V 4.0mm DC Battery - Jacket, Hoodie, Vest Battery Charger