Used this station both headed south down 20 to FarmVille this morning and tonight on the way north. - it charged for ten minutes and then stopped both this AM and PM. I re-started it and it worked fine at a peak charge rate of 78 MPH (370 Volts and 65 AMPS). Is this normal? Also what is causing it to shut down (besides the fact that I walked half a mile away to dinner when it happened and ditto for breakfast this am).... I wouldn't use this location next time. thoughts on what is going on?