i could post the mods i made to it, but i dont know how to do it on other ones, i just used this one, i could give the product number of it, but i dont know if you could find on easily.
crap i double posted, and i also made off of a hackaday inspiration, a 5v charger and a female usb. so anything that charges via usb port, i got an altoids tin a 5v regulaotr a 9v battery, a female usb port, a led, and a switch.
very sweet. isnt that expensive to make either.