How long will my USB battery pack last?

USB battery packs have different capacities, typically quoted in mA/Hours.  The table below, shows the continuous use time for the most common types.

 

USB Power Pack Capacity Continuous Use Time (approx.)
3350mA/H 5.5 Hours
5000mA/H 8 Hours
15000mA/H 24 Hours
22000mA/H 36 Hours