Compact, powerful, and built to perform—Fieldsheer’s 7.4V Powersheer™ Mini Battery is the trusted power source for many of our heated jackets, vests, baselayers, and gloves. With a 2250mAh capacity, it delivers dependable warmth in a lightweight form factor that’s easy to carry and discreet to wear. The LED battery meter keeps you informed at a glance, while USB-C charging offers convenient recharging from virtually anywhere. A proven staple in the Mobile Warming® system, it’s ready to power your next adventure.