The Jumpr Stack 3 can be charged using any USB power source! For example, a computer's USB port, a USB wall adapter, another battery, one of our Generatrs, etc.
The length of time it takes to charge your Jumpr will depend on the power source and the state of the battery. You can find more information here: http://www.goenerplex.com/lifestyle/charging-calculator
Date published: 2015-11-21