This was a purchase so that my wife could charge her e reader, nope not gonna happen, it will not charge a cell phone that needs a steady current to charge, but it will charge the power pack that will charge my phone and her e book, and that works for us at this time. If you want this for something like a Samsung S5 or S7 Nope, but you can charge a power pack that will charge your phone. for me It works, put it on the dash of the boat charging the power pack, then just switched to the power pack to charge the phone.