"Good, but didn't last long"2.0 starson by ianfingland
Pros: Small, portable, and would fit on iphones with cases. Charged quickly and charged the iphone quickly.
Cons: It began holding less of a charge after a few months, and then completely died. Considering the price not bad, but it should last longer.
Summary: It's worth the price for the size and amount of charge it carries, but be prepared to replace it in a few months if you regularly use external batteries. I used mine daily in not more than once per day.