I am a Boy Scout adult leader and am always looking for charging products to keep our phones charged. I had high hopes for this product from Anker. Overall design is nice and having 3 USB-A ports is nice to have as it allows me to charge an iPad, iPhone, and iWatch at the same time. The biggest downside is the amount of time it takes this beast of a bank to re-charge. Took me over 12 hours and that's using the "2" Micro USB ports. Needless to say that I will be returning and seeing what other options Anker offers.
When I go backpacking, I may need to charge three things (phone, satellite messenger, hearing aids) so three charging ports means I don't have to swap devices.