3.7v Thawdaddy Battery hoodie 4volt batteries are compatible with

4volt batteries are compatible with only Fieldsheer 7

or any cold-weather pursuit that demands support and heat

or frigid environments where lasting warmth matters

athletic fit

3.7v Thawdaddy Battery hoodie 4volt batteries are compatible withThe 3. 7 volt Thawdaddy battery is compatible with only Mobile Warming Thawdaddy Heated Vests. To learn more about which garments are compatible with what batteries, check out our Mobile Warming Technology Battery Compatibility Chart. Specifications: Rating: 3. 7volts, 2000mAh Input: DC 4. 7volt, 750mA Charge Time: 4 5 hours Size Inches: 2. 1in x 1. 8in x 0. 35in Size Metric: 53. 3mm x 44. 5mm x 9mm Garments Compatible: Smart ThawDaddy Vest