Additional/Replacement Roam Battery 2-pack Never let the cold interrupt your comfort. The Gobi Heat Additional/Replacement Roam Battery 2-pack ensures your Roam Heated Socks deliver continuous warmth, keeping you active and comfortable in any challenging environment. Whether you're extending a day on the slopes, tackling a long work shift, or simply need a fresh set of power cells, these batteries are engineered to keep your heated socks performing at their best.