Need a little more power?
http://offgridsurvival.com/powerpractical-lithium4400/Battery Pack Technical Specs:
The unit packs 4,400mAh of power, which is enough to charge to an average smartphone about 2-3 times. In my testing I was able to fully charge my iPhone about 2.5 times. Charging times were similar to what you would find with an average 1Amp output wall charger
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