510B Battery

Capacity: 3.7V    10000mah (38.5Wh) rechargeable Lithium-polymer battery. 
Designed for USB (5V) heated gloves, scarf, hat..
ABS case
Output: DC 5.0 VCD 2AMP
UN38.3 Certified 
 
Weight
Dimention: 12.75 x 6.5x 1cm