If I had 2 18650 batteries (3.7V each in series = 7.4V) could I use a 7805 and a female usb connector to make a cheap iPod charger (iPod Touch)? I know that the 7805 will provide 5V @ 1A but is it efficient enough to charge the battery up a good amount? The last one I made I used a 9V battery (big mistake) but it just drained the ipod battery :( My question is do 18650 batteries provide enough current to charge an iPod Touch?
Bio:I am 16 and have been interested in electronics and programming since age 11 when I built my first robot - The BeetleBot - since then I have graduated to arduino. I also like to hardware hack a bit.