Using the USB Charger is extremely easy. Install either two or four batteries in the charger, then simply connect it to your computer using the included USB cable to charge the batteries. When charging, the area around the USB port on the charger will emit a red glow. Once the charge is complete, this will change to a blue glow.
Here we see the "torch" light in action. As mentioned earlier, this seems like a pretty random feature for a USB battery charger. The light itself is much brighter than I anticipated; bright enough to be used as a decent flashlight should your power go out or you find yourself out at night with no other light source.
And finally, we see the USB Charger in action, charging my iPhone. I had planned to do some testing, to measure how long it takes to fully charge the batteries and also, how much power you could expect from a full charge, but after some thought, I decided against it. The results that you get from the charger are totally dependent upon which type of batteries you use. I purchased a new set of four AAA Energizer rechargeable batteries, which of course would perform better than a used set that you may have owned for a year or more.
So, how did the USB Charger perform overall? Fantastic! It did everything it's advertised to do and without hassle. The Charger was able to charge my iPhone just as the regular wall charger would. I was still able to fully use the phone, and the retractable cable worked great. This meant I didn't have to have the actual charger attached to the phone, or remove my phone case, which is something I had to do with other portable charging solutions.
The "torch" light is an odd feature, but I suppose it could be useful if you find yourself in a low light situation. The light it emits is very bright, much more than I expected.
You have the option of using either rechargeable batteries (recommended, as disposables will get expensive over time) or regular disposable batteries to power your devices. With rechargeables, you have the ability to charge two or four AAA batteries at a time, although I see no point in only using two unless that is all you have on hand. The charger works with any USB-powered device, and there are several phone options you can select when ordering: Motorola, Nokia, Sony Ericsson, Samsung, Sony PSP, Siemens, LG, Nintendo NDS, iPod / iPhone. These extra connectors cost $3-4 USD, not bad at all, especially considering the charger itself only sells for $13.99 USD.
The only "con" I can find with this product is that it does not come with batteries, so you will need to supply your own. This really isn't such a bad thing, as it keeps the overall price down and allows you to use whichever batteries you choose.
OCIA.net has awarded the USB AAA Battery Charger with iPhone Package our Seal of Approval.