*Fieldsheer garments have an athletic fit. If you are in between sizes or unsure on how to measure, we recommend you order a size up.
Our 7.4v baselayer battery delivers ample heat for hours on end via our Mobile Warming Technology®. Mobile Warming® uses only the highest quality Lithium-ion batteries to ensure long-lasting power and battery life.


These 7.4-volt batteries are compatible with only Mobile Warming 7.4-volt Baselayers. To learn more about which garments are compatible with what batteries, check out our Mobile Warming® Technology Battery Compatibility Chart.


  • Rating: 7.4volts, 2200mAh
  • Input: DC 8.4volt, 1,000mAh
  • Charge Time: 3-4 hours
  • Size Inches: 2.9in x 1.7in x 0.57in
  • Size Metric: 73mm x 42mm x 14.5mm


Garments Compatible: