Got a little project going on. Trying to get a cord to hook up to my battery to charge the smart phone. Of course this is on the cheap. How cheap? I need a micro B USB cable to connect to the phone. I found a cable that I wasn't using and found the pinout on Wiki. I have seen 12V USB adaptors for $10-$20 bucks in stores. I don't want to put a cigarette lighter on my DL. So I found a dude who got a cheap adaptor off Amazon for $2 and ran a wire to the battery then fused it. Used his standard cord to charge the phone. I was thinking of getting a +5 V TO-220 linear regulator at the rat shack, an inline fuse holder probably with a 2 amp fuse, and a heat sink for the regulator. Use my cut unused micro B cable and wire it to the battery. Then run the cable either up front or leave it under the seat. Finding a cap for the micro B end may be an issue.