I've seen several threads with this topic but mine's slightly different. We just made our first trip to Catalina Island to fish, while there we dropped anchor several times. I recently installed three new Northstar AGM batteries (from West Marine) and had the battery selector switches on "Both". When raising the anchor with the engines running, I'd get a "low voltage 11.5 volts" message on the Garmin 7610, not through any of the GW gauges. Since the batteries were fully charged, I'm guessing that this may be an issue where I just need to change the low voltage parameters on the Garmin. I don't remember offhand the brand of the windlass but I think it's the standard one on a Sailfish. Anyone else run into this?