Quote:
Originally Posted by topher2009
remove the negative from the battery and put a multimeter in between the -ve cable and the battery terminal, see what current is being drawn with everything off
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Our alternator was intermitent if you like, would show charging at 13.5+ volts when the engine was running, but with the ignition off the battery drained in 4 or 5 hours !! We were in a cycle of charging the battery overnight and disconnecting when not making short trips to the shops, (RC leisure battery ready to go as standby !)
you can search for 'parasitic drain' but as topher said, remove negitive battery connection, set multimeter to amps and connect between neg battery terminal & removed cable, we were showing 3amps ( I still dont quite believe it), remember interior lights may be on ect.
I also saw references to bad neg lead connection to the bodywork as being capable of draining .
Good luck