No matter how low the temperature drops outside, Venture Heat's 7V and 5V lithium-ion battery heated clothing will keep your torso and core comfortable and dry for up to five hours on a single charge. All of our heated jackets, vests and base layer clothing feature three levels of heating with the built-in controller, so you have control of the various large, tri-zone heating panels located throughout each garment- regardless of how the weather changes.