frist check.if battery is topped up water?..if not top up but not tap water!.second.check that all interior lights are off this includes the boot curtesy light also make sure your radio turns off infact make sure you turn everything off these items will drain a battery over a few days the water level will stop the battery from holding a charge for any lengh of time.if none of this works try cleaning all battery terminals and all electrical terminals on alternator an starter as these also can cause battery drain.
alan mellor, April 2006