I think I mentioned this before, but, may be it bears repeating- Find an old motorola round plug end car charger (I got mine in a Family Dollar store), open up the charger end and unsolder the cable. Get along to Radio Shack and buy some heat shrink tubing (they sell a multi size pack), hack off a plug and 6 inches of cable from a USB cable and rewire to the one from the charger remembering to slip the tubing on first. Solder the joints as neat as possible and then slip the tube over the joints and apply a little heat until the tubes shrink tight. For an even neater job slip a larger piece of tube over the whole cable to start with and slip back to cover the who;e joint. Ah yes and before you ask RED and BLACK and the RED goes to the centre wire on the plug tip end. They should be the same colours though. (you may find WHITE and BLACK).