Crafted for the relentless adventurer, G-Tech's 4.0 battery ensures you're powered for any expedition. Providing up to 12 hours of heat backed by cutting-edge technology, our batteries stand the test of time. Order a spare to double your usage and never be left in the cold again.

4.0 Battery Upgrades:

• USB-C charging compatibility for simple, universal charging

• Integrated LED battery-level display so you always know how much power you have left

• Extended runtime across all heat settings, giving you longer-lasting warmth

• Multi-use portable power bank functionality, allowing you to charge additional devices via USB or USB-C ports

*The 4.0 Battery is compatible with 3.0 Heated Pouch Models*

*Each 4.0 Battery also comes with a USB to USB-C cord*