I have a 12V cigarette lighter socket in my plane. It has a 4.8V (Dual 2.4V) charger that stopped working today after 4 years. It still seems to work some of the time. I tried reseating the charger, resetting the breaker, but no change. The green LED light stays on so it is getting power from the plane, but not sending it to the iPads. Can someone suggest a good replacement? I don't really want to panel-mount anything but would rather just use a car-charger. Just looking for one that won't smoke or die after a short while and that doesn't induce static on the radio.