This USB charger will allow you to recharge your 3.7V BEGO batteries.  The dual-end allows you to charge 1 or 2 batteries simultaneously.

 This charger is compatible with:

• Full Leather Heated 3.7V Work Glove
• Heated Base Layer - Skin Fit
• FNDN Heated Hoodie
• FNDN Heated Performance Soft Shell
• FNDN Heated 3.7V Slipper Socks
• FNDN Heated 3.7V Sports Socks
• FNDN Heated 3.7V Liner Socks
• FNDN Skin-Fit 3.7V Liner Glove
• FNDN Heated 3.7V Daily Glove
• FNDN Heated Hat
• FNDN Heated Cableknit Beanie