my battery keeps going flat when left overnight or for a few hours ..nothing obivous left on car runs well with no other problems ..halfords thought it might be the starter motor causing it but wouldnt put there neck and say for definate ...the battery is discharging as soon as the engine stops ..they put a volt meter on it and you could see it dropping quite quickly when in the car so something is drawing the jiuce ...they said to take to main honda dealer as they will have the equipment to trace but anybody any other ideas ??