Griffin PowerBlock Dual Universal Charger for MP3 Players and USB Devices (2Amp - 1A per Port) (Black)

This supposedly has 1 amp per port. This is false, it does not. I have a Droid X and a Droid 2 in the house. It will not charge them both at once. They each require 850ma. It will however charge one of the Droids and one dumb samsung phone requiring much less current. This device is nice, but I wish it really pushed out 1A per port. It would work great for those who simply need to charge one smartphone and one device that requires less current, e.g. a bluetooth headset. A minor setback for me, but others may not be in the same boat.

I bought this PowerBlock Dual Universal Charger to run my HP Multimedia USB powered speakers but hoped to be able to run my iPad as well. The iPad uses a 2.1 amp charger and the USB powered speakers requires 1 amp.

I connected both the iPad and speakers to this charger at the same time and they both worked fine. I watched a video on the iPad while listening to the speakers at a high volume to determine if the charger can handle it. It not only handled the load without any problems, but it also charged up my iPad to a full charge.

I discovered that there are two versions of this PowerBlock Dual Universal Charger. This one provides 1 amp per USB port and the other one produces only 500 ma per USB port. The good one advertises the 1 amp per USB port capability, while the other one does not. Also, this one shows the 1 amp per USB port on its packaging and on the unit itself. By all means get this better one, not the less capable one, as it can handle more...Read more

Some of the earlier reviewers complained that the charger is not powerful enough to recharge combinations of certain USB devices with higher than average power consumption. I wonder if they used the previous model of the PowerBlock. I tested this charger with all possible combinations of the three USB devices I use most: Kindle 3, BlackBerry Curve 8530, and iPod Touch 64GB. In all combinations I tested, PowerBlock worked fine charging the connected devices quickly.