FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
Have a Merc Scorpion 5.7L - replaced batteries 3 seasons ago....charged them both prior to this season, started fine but when in idle the gauge is showing a 'drain' dipping below 12v - when running at normal speed/revs...gauge pops back up to showing charging....but even if run for a length of...