FIR ourdoor sport heated gloves with rechargeable battery: 1.Safe and reliable 2. Energy saving 3. Good ... warm effect FIR ourdoor sport heated gloves with rechargeable battery:1.Application. skiing,snowboarding,cycling,climbing,riding,Fishing,outdoor ... cold.5.Good warm effect High capacity rechargeable Li-polymer battery,Votage:3.7V/7.4V,Capacity:1700mAh/4400mAh,can recycle charge-discharge ...