You can find a better charger.
929913
So, besides the completely unnecessary lights on both ends of the charger that light my room up like the sun, causing me to put a nice thick layer of black tape on it (you can only imagine how convenient that is) so I can sleep while charging my phone... it seems to choose when to and when not to work.
1287821
Doesn't charge any faster then a regular car charger.
2516323
The charging slots are slowly failing one-by-one.  The battery clips are not very well designed and it is hard to get batteries to stay in the correct position so that they will charge.  It seems to charge well, but the more batteries you put in it at once the slower they charge.
414677
The item charged doesn't hold the charge very long as compared to other chargers.  It charges quickly but the tablet and phone that I charge with it die in half the time as compared to a slower, lower amp charger.
3874967
It works. Looks nice. But the charge wires themselves are TOO thin/not enough strands, and the voltage drop on this charging cable is high, to the level of being equivalent to subpar quality junk. Anker is charging a premium for a nice looking cable - be aware, you are not getting a good performing cable.
4216375
Okay, this device could be better. But it's also not bad. The readout doesn't always indicate correctly if a battery is charging. The 9V never displays, but does actually charge.
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.
2888894
It's not that great.  It doesn't have much sucking power and the charge diminishes quickly.  I should have returned it.
257038
I bought this charger hoping it would solve the problem that my other previous Samsung chargers I had ( the connection always broke close to the end of the cable and I had to hold it in awkward positions to get it to work). After connecting it to my phone I realized that it was not charging my phone (Samsung Galaxy Nexus) as fast as my previous chargers did. In actuality, as I was using my phone the battery percentage went down. I realized that it was the fault of the power adapter on the new charger and not the cable. I had to use my old adapter with the new cord for it to charge correctly.
3203538
I take it on trips all the time. It has its place. But I can't seem to charge two phones on it at the same time with out constant power loss of the phones. I end up using a separate USB charger plugged in to the power strip portion of the device. That being said I think there are better products out there for less money.
141559
Not really that thrilled with this charger. Takes a long time to charge with it...
1304055
Good enough for the money, but I had to cut out the charger opening to make a good connection
1745680
It works, but it makes the phone really warm when it's on the charger for more than a half hour. Secondly, you have to find just the perfect spot on for it to charge, which kind of defeats the purpose.
4766578
The charger was bought from another site. It worked very well until the micro USB port stopped working within a couple of weeks.  The charger is bulky also.
3159589
These chargers seem to die every few months, buy third party
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.
3302913
The internal battery and ports started to have some issues after a few months or so. It was a pretty nice little charger until then. Anker's newer products are much better.