Bests & Worsts Reviews from Amazon

I've been holding off on reviewing on this bad boy because I really wanted to answer long term questions about the battery's longevity I think I've had it now for 2 months so I can't attest to something like a year or two but I do have some information. I read a lot of reviews saying they could charge their phone up to 5 times on this before they had to charge the actual battery. Tested, true. I have an iPhone 5s but I have also tested it on my mom's iPhone 6 plus. No issues what so ever. I also read that this guy takes FOREVER to charge up, also true, Don't plug this in totally dead and unplug it an hour later expecting it to function as if it were fully charged, it won't. Imagine that the battery is like a human a one hour power nap is not enough to face a full day with...A night's worth of sleep should pretty much do it though. Next there are a lot of comments that say 'it will stop charging when it's full.' this confused me what is 'it' in this scenario? is 'it' the charger is 'it' the phone? If it's the charger that's great, if it's the phone...what if I want it to do continuous charging because I am doing something that is extremely strenuous on my phone battery? Like Pokemon Go for example? Here is what I learned, when you plug the batter in it will flash blue at the top there is a bar, the bar has segments of color, as it charges up the segments all light up, as it dies they go out one at a time signifying an approx. percentage of 'life' the batter has left. As far as I can tell it is always drawing power if it is plugged in. The PHONE is what will stop charging once it reaches 100% battery. HOWEVER if you are doing something that is sucking batter life about as fast as the charger can charge it then it will continue to give it battery life. As far as pokemon go is concerned since I know there are a lot of people out there who are finally biting the bullet and deciding to buy an external batter so as not to have their phone die after and hour of playing. I played with my husband's AND my phone plugged into the batter for 5 straight hours and the external didn't even lose half of it's battery life. So once I tested that out I had to know exactly how long it would last. So I plugged my phone into the batter (my phone was already at 100% battery when I plugged it in) and I opened the app I left the app open until the external batter died and my phone battery died (I know my phone can play pokemon go for about an hour and a half before it's completely tapped) The app was able to run for 52 hours before it killed my phone. After 2 months I still use the charger daily, in fact sometimes I don't even charge my phone in the wall I just take my pack with me and use it as needed. It is about the size of an iPhone 6 plus but honestly it can fit in a back pocket, or for men's pants probably even a front pocket. I charge the battery about once every 3 days. It is an excellent purchase. The value is incredible. I'm still loving it, I even bought one for my husband who also has absolutely NO complaints.