This battery is designed to power the E-Kelvin jacket's I-Warm technology.
An inner pocket houses the battery for added comfort, and a USB cable integrated into the jacket connects to the battery for operation.
With its 5,000 mAh capacity, the battery can last from 3 to 7 hours.
To recharge the battery, simply use the USB charging cable supplied in the box, but you can also use a micro USB cable (not supplied).
When charging begins, the white LEDs flash. When the battery is fully charged, all four LEDs are on, no longer flashing.