Give yourself up to 10 hours of extra battery life with the 6500mAh Gobi Heat lithium-ion battery. DC Only charging (does NOT use USB-C). Click here if you are looking for the most current Gobi Heat battery. Note, while this is our older style battery, it still works with all Gobi Heat® Jackets, Hoodies, and Vests. Click here to add the wall charger for this battery as well.