I purchased this product, but was somewhat hesitant because of the "i" in the front of the name.  It seems most items with "i" in front of the name are catered toward iPhones, iPods, and i-everything else.  I figured being an external battery pack, I'd give it a shot...as it said in the description that it worked with my Samsung Galaxy Note 2.  I received it and tried it out, and it did charge my cell phone without any issues.  In fact, it has a small amount of battery charge left in the external battery pack and my phone was at about 60%.  I didn't think it would last long, but I plugged my phone into the device anyway.  Before I knew it, my phone was up to 95% battery charge.  I was quite surprised.  I'm an IT guy and not the first to jump to the instructions when I get a new "toy"..  So when I was playing with the button...pressing it, holding it down, etc., I discovered how to turn on the laser pointer...and my cat started chasing it.  I hadn't even realized that it not only is an external battery pack and LED light, but also a laser pointer...great for pets too!  Overall, I'm pretty happy with this purchase.