Grant Kateswrote a review of Goal Zero Flip 20 Recharger on May 25, 2017
Familiarity: I've put it through the wringer
You need this. Cell phone batteries are notorious for draining really quickly and it only seems to get worse with all of the new apps we keep downloading.
If you are on the go a lot or use your phone a ton, check this item out. you will not regret it.
Also comes in a smaller size and a size larger so you can pick your proper size depending on your power needs.