Decent quality, bad charge.
355306
This is a better quality than the case & keyboard I purchased through a different seller. The case is sturdy and stays closed well. The keyboard has decent sized keys that are easier to type with than other cases with tiny keys. However, it is very difficult to get the keyboard to charge. I have to place something under the mini usb to keep the chord at an awkward angle in order to keep the light on that shows it is charging. On the up side, it does have a light that shows it is charging.
4504750
Good quality, no 2.5a charging like the ad says even though i have a compatible charger. It looks nice
4205345
Not bad, came packaged as described and appears identical to the original Samsung OEM charger. Unfortunately, it's very hit or miss as to whether the phone fast charges or slow charges, which can make the difference between a 40 minute charge and a 4 hour charge.

In short, this product seems to be hit or miss.
4909297
Does not charge phones properly. Otherwise it's okay.
614003
I bought these for a new Nexus 5X.  First of all, these cables appear to be really nice quality.  However...

- One cable is already dead

- They are not reliable.  It's like buying a non-certified lightning cable.  Every cable goes randomly between not charging the device or it charges slowly.  On a good day, it will say "Charging", but never rapidly though.

- As other reviewers have claimed, they are stiff and it's a bit hard to manage at a office work station/desk
4708631
It's not a great portable charger but it's not horrible. If your playin on your phone while charging it will literally go up 1% within 10 minutes. But maybe it's just my phone.
4360606
When I first received the battery I was Impressed with the quality of it and the fact it can hold a charge for a whole day, which is something since I am always on my phone with Bluetooth enabled. The Charger was a little poor but it did it's job keeping one battery charged at a time and it's usb port was pretty useless. However, after 4-5 months, I noticed one of my batteries draining faster and hardly keeping a charge and soon enough my phone, nor chargers could charge it at all. I even get a weird question mark as if the phone doesn't recognize the battery. I still have one working battery that still works, but I expected better quality.

02/19/2016
I was surprised that they sent me a new pair of batteries and charger after they read my review. Like I said they are good batteries, but there customer satisfaction guarentee was enough to raise my review to 5 stars. Thanks
2626963
The port marked as 2.1A (without anything inserted on the other side) definitely did not charge my phone as fast as the 1.8A charger that came with it.  The unit itrself charges reasonalbly fast.  The capacity indicated that it should hhave charged my phone 4 times; in my test it only charged it about 3 times.  For one of the less expensive battery backups,  it's not a bad investment, though.
18687
The tablet itself is decent, but the battery doesn't stay charged as long as it's supposed to!  I am guessing this is why it was on Ebay!
1125830
This charger is very sturdy and the material is definitely high in quality. It also helps that there's a display to show much power you have left before needing to recharge the battery pack. I've been able to charge my TI-Nspire calculator and my iPhone a few times(2-3) before it went down to 60%. In addition, it comes fully pre-charged which is great because it's ready to use.

However, the battery itself won't charge properly anymore. After 10 minutes of being plugged in the display goes out and it stops charging altogether. I've tried unplugging and re-plugging everything but it doesn't work. Not sure if mine is defective or not, but I probably won't be able to use it anymore once it completely runs out and I've only had it for about two weeks.

Edit: Customer service reached out to me and offered to replace the power bank, they also offered a few suggestions in trying to fix my issue. I changed the cord I was using to charge the device and it worked perfectly. The power bank charges my devices just fine now.
3822852
The batteries work well enough, they charge fine and last a decent amount of time. The charger however is flimsy and poor quality. We used it for a few weeks, but this week when taking a battery out, it broke. I didn't realize at the time, but when I went to put a new battery in it, one of the little pins was missing. The spring was inside the charger, but the pin gone. It's so tiny there was no way to find it on the carpet and I'm not sure I could fix it even if I did find the pin. It's not durable, it wasn't treated rough and it broke after only a few uses. I don't recommended the charger at all. I had another one (different brand) for my Galaxy S which lasted for two years, this one, a few short weeks.
2688887
This is a nice battery pack. The metal body feels nice and it carries a decent amount of charge. The light showing the % of charge left is also easily read.

I rated this a 3 because it's a decent battery pack with common problems from most battery packs.

It take a long time to completely charge this pack from 10%. I stopped watching after 5 hours. It also take a long time to charge my phone.
4183524
Good for the price, but charges slowly. If you have a phone capable of quick charging, I would not recommend these.
188895
Average quality cables.. but the length is a boon if you want to charge and work the phone at the same time
237901
This battery charging alternative is of decent quality.  I like the ability to be able to use it as a USB or AC charger.  Comes with a USB cable.  Seems to be a pretty quick complete charge as it takes about 2.5 to 3 hours to get a complete "fill".  The only thing I think could be a little better is the overall "size" of the unit.  Though it's definitely a decent size its actually bigger then my point and shoot camera.  For a battery charger, that's a bit disappointing.

Overall, no features that would make me not recommend this charger.
2523880
I have no complaints about the phone, mainly because I haven't had a chance to really use it. When I received the phone the battery was dead so I plugged it in and left it charging for a couple hours without using it. When I turned it on and started using it, it stayed charged for maybe an hour. I left it charging while I was sleeping and, 8 hours later), it had reached 50%. I turned it off thinking maybe it would reach full charge faster, but when I turned it back on after leaving it charging, it was down to 11%.

Needless to say, I just had to order a new battery and I am stuck using an old phone until I receive my new battery. I'm just upset that I waited so long for the phone and now that I have it I have to wait longer to use it.
1504437
Product is good quality ... HOWEVER, you will not get anything over 1Amp no matter what cable you are using. I used an amp reader app for my phone and got nothing higher than 940 milliamps after trying a Samsung quick charge cord, a Kepow quality cable and the supplied Anker cable. All three cords are capable of holding a good charge. This isn't my first rodeo with Anker. I have external batteries and a Bluetooth speaker from them ... All great! BUT I feel like if you're going to advertise that it delivers a higher than normal charge, it should translate into performance. Does it charge good? Yes. Does it do what it is saying it delivers though? No. They sell the actual "quick charge" unit for 2.5x the price as this one.