The iTorch charges up quickly and was able to charge my new Samsung Galaxy S3 from about 15% battery life to full charge three times before needed to be recharged itself.  I also love the builtin laser pointer and flash light.  Device is solidly built, packs a big charge for such a small device and I like that I can use my own single micro USB cable to charge the device and use the device to charge my phones and other devices.  I highly recommend this product.