Don't waste your time on this charger
921856
I knew this was a small charger, but the iPhone 4 didn't even recognize it.  I am not even sure it was taking a charge.  Sent it back.
808079
This charger takes absolutely forever to charge my phone.  I wanted a fast charger that would charge my phone in an hour or two, to handle the end-of-day-dead-battery problem.  But it fails to charge at all while its being used.  It can barely keep up with the drain from using it.

This was a worthless purchase.  And now I'm going to have to buy another charger.

In all fairness, for $6, its fairly well built, and its solid.  The cord is thicker than others that I've had.  But at 1.0 amp, it just doesn't have the current necessary to be a fast charger.
2282841
this charger charges too low rate, it charges my phone at a rate of 10% to 12% per hour which is a lot slower than my old charger. I measured the input power of the charger of 1.2 watts during charge, I measured my old charger that has 4.8 watts.  I think this charger does not meet its output power spec of 5 watts.  totally disappointed
4611151
Received one as part of a kit. These chargers are not tested at the factory. Indicator light for cell 2 isn't working. Even worse, this thing will overcharge lipos and not charge them properly. With 2s batteries it charges cell 1 more than cell 2 (this is with 3 different batteries). I've managed to have it reach 4.28v on cell 1 and 4.1v on cell 2. The charging rate is incredibly slow, 700mA per cell.

Is it cheap? Sure. But spend $10 to $20 more on something that won't destroy your batteries and possibly burn your house down. 3x batteries possibly destroyed isn't worth saving a few dollars on a cheap charger.
4345210
This charger sucks, plain and simple. I plugged it up to charge my sons razor drifter that we lost the charger to and the light on the charger was red for ten mins and then it was green. We know from the previous charger we had that green means the battery is fully charged. Obviously the battery cannot fully be charged in ten mins. We left it "charging" until the next day and the drifter was never charged at all. Returned and got my $$ back.
117541
This charger is supposed to be a fast charger but fails to even charge at a normal pace. Have plugged in all kind of mobiles for hours together to get charged to just 20%. Have changed all kind of cord working charger atleast no help...its 3 months now struggling with this pirce of junk.....would be grateful if this is replaced with some other model
2921949
These are advertised as Samsung chargers but please be WARNED, they are NOT!  I already have 2 authentic Samsung chargers which came with the devices and they charge devices with speed.  With these, I put the phone on the charger at 6pm with zero percent, the phone powered down, and at 8:15pm the phone was at 18%, over 2 hours on the charger and all I get is 18%! I took the phone off this charger and put it on the original charger and at 8:45pm the phone was on 77%.  These chargers are no good. They were a waste of my money and I just wanted to let you know that you will be wasting your money, too.
4094916
Super disappointed with this charger, it works, but it doesn't work well.  The first time I used it I left it charging for about an hour without checking it.  Came back to unplug it, sure it would be at 100% only to find it had gone from 25% to 37%.  I've had it plugged in beside me at work for 30 minutes and it's literally only gone up 1%.  Basically now I use it only to make sure it doesn't die, but don't expect to get any real charge out of it.
3075231
Worked for 2 days then stopped. Don't buy this, you are not going to be one of the "fortunate few" who claim that this charger works long term.
1757518
DO NOT BUY!!!
Charger is defective. Charges for about 30 seconds before turning off. I've only been using this for a day.
3018777
Terrible. Just began using one of the chargers one week ago, and it won't charge anything. Says that it is connected and charging but it's actually sucking the battery life out of it. The other charger worked for 3 weeks and suddenly stopped working too. Junk.
2889798
I have this 15 minute charger and it has appeared to have killed not only older NMH Engergizer NEW batteries but also does not charge older ones that should still have life left in them. If you read the reviews carefully you will see that the glowing reports come from people who have only charged their batteries several times and yes, that was my experience too. However, over the long haul my experience has been exactly the same as all of the others who report dead cells that will charge on other slow chargers or not at all. We all want a quick charge but that may be a technical impossibility. I will certainly never buy one of these 15 minute chargers again and I really urge new buyers to beware.
3764210
I regret buying this cable... It have it at work and it acts as a transfer cable, but it's charging capability is terrible.  The transfer I'm currently doing is ~1300 13MP pictures and it looks like it's going to take ~120 minutes, so take that for what it's worth, but it's been plugged in for 45 minutes with the screen off now and has only went up 2%.  A real Samsung charger would have added 60% or more in that time.  For what I'm using it for (transfers of data), I guess it's alright, but DO NOT buy this as a charger, because it doesn't charge JACK!
1591850
Bogus product. Not likely a Samsung charger. I have 1 amp chargers that recharge my Samsung phone MUCH faster. On top of that, it ships with one charger and two cables even though the description and pictures indicate two chargers and two cables. Don't waste your time and money with this one.
4661416
Doesnt deserve 1 star..I have farmed my entire life and have owned and used many battery chargers over the years but this particular charger was one of the worse chargers I have ever bought..I bought it to charge my boat batteries and it worked maybe 4-5 times then it got to the point it wouldn't come on..Then I realized that if I jarred or gave it a hard bump it would come on and I would think it was charging but it would stop charging in the process..This one is literally somewhere down the river because I actually threw it over board the last time I tried to depend on it..
1355471
Charger is complete garbage, and that's right where i put it. Only two ports out of four indicated charge, USB plug-in connection was intermittent at best, battery plug-ins fell out if you just moved or touched them.  Good luck getting any use out of that device.  I've received two other usb "chargers" like this, and they've all been useless.  Better to get the individual usb cable adapters and connect them to a regular multi-port usb charging device.

The batteries themselves all took and held a charge, but the size of the batteries is *exactly* the same size as the 300 mah batteries I was hoping to replace (see the attached photo, the 380 mah battery I received is the blue one on top).  Run times seem equivalent to the 300 mah batteries as well.  I am doubtful that these are actual 380 mah batteries.

In short, I received four working batteries, but not the ones specified, and not with a working charger.  I notice they've recently changed the product shipping out; hmm.  You pay your money, you take your chances here.
4103710
According to other reviews, I suppose this worked for them. I'm with the other one-star reviewer here. If you are unlucky, you will end up with one where the controllers simply do not sit right and only the bottom one works maybe 35% of the time. Oh and it will lose connection randomly even after you carefully set it up so when it's time to game, oh I can't, since it wasn't charging.

I started keeping a pack of AA batteries next to this charger. That is simply the saddest thing I can imagine happening to a charger.

This is a charger. It has one job. It fails miserably. This is a terrible product.