Extremely slow to.charge
340816
This charges extremely slowly.  Actually slower than any car charger I've used, ever.
896190
No way this is anymore than 3 stars imo.  The concept is great but basically you are paying to not have to plug a usb into your phone instead you plug it into a device (middle man) and 'he' charges your phone.  Only problem is it takes forever to get a charge.  I went to bed (approx 1130) on 35% battery work up (approx 0730) and my battery is only at 84% !?!?  What's the point as I could have gotten a much faster charge simply using my cable directly into the phone.  3 stars
1046402
Too slow to charge, I bought these because they stand out in color and are visible wherever I plug them in, but the slow charging speed makes them unusable. Another problem - the micro-USB end is too loose and pops out of the phone.
1419492
So for the charges are working with my android phone however
 Charges my tablet very slow
183675
Takes forever for solar power to charge and slow with two phones at the same time. still iffy about this purchase
1948075
Charging was very very slow. Picture quality is very good. Youtube app really sucks. It does not show recommendation/history/all the videos under my subscriptions. Useless youtube app.

UPDATED:  It says 15% remaining even after 2 hrs of charging? I am not sure WHY..changing my rating to 1 star. I don't understand how most of you gave 5 stars when the battery is taking soooo much time to charge and taking very less time to discharge
2484321
The battery is verry low... I have to charge every time
29133
Very slow to charge and does not last 1/2 as long as the original battery. Sorry I threw the original battery away. I would have sent this back.
59530
The charger pad is VERY SLOW charging.  I can pull the cable out of the pad, plug it directly into my phone and have more juice in a shorter period of time.
130906
Bought this because of the great reviews it had... while it does charge my tablet, it is very slow to do so. To the point where the charging icon doesn't light up and took almost 7 hrs to get a full charge. I've changed the plugs with which I connect it to the wall and have even tried it on my PC to to avail.

I wouldn't buy this or recommend it because who really has 7 hrs to charge their tablet?
1117588
This tablet was so slow. It needed to be charge frequently compared to other devices we have in our home.
1820235
I'm kinda disappointed at how slow the charge is and already I'm having issues right out of the package with having to make sure the phone sits just right or it won't charge.
3701446
First thing I noticed was that it made my phone extremely hot. It wouldn't charge completely and I thought it might be due to the overheated phone so I decided to try another day. I tried to put it on the pad overnight and it only charged to 65% which was really frustrating. Also, the charging is extremely slow; much slower than even a normal charger. Very frustrating.
2386517
I normally have used Anker in the past because I have good experience with their batteries. I decided  to try this one out and I regret it. It is VERY slow to charge. It takes 3x longer than a regular battery. I am considering returning it because it is not worth it.
454665
Terrible for Charging. Can't use the device while charging. Very slow charge even when not using.
3535590
Terrible..so slow to charge your phone. Would not recommend .
1303753
The wires are so small that charging is very slow