Can any one advise me both me c5s have the same problem put the fully charged battery on and 2miles later on one and 1 mile later on the other beep beep the battery is flat ..put battery on charge i hour later full .so we know really the battery was not flat or it would take 6-8 hours im running with orignal sinclair tops.what has gone wrong in the control box i wonder im sure the pods are ok.