Bought a Passport 43 in September. Laying up for the winter, I plugged into the shore power
December 1st, with a plan to run the inverter
to charge the Batts on the first of the month keeping them topped up over the winter. Yesterday, checked the batts (Heart Interface) and both batteries read down approximately -150 AH, with the "low battery" warning flashing.
I then checked the panel, and it reads something akin to: "reverse polarity, disconnect from shore power
I unplugged from the shore power, found a new outlet that does not read "Reverse polarity...", and attempted to charge batts overnight. Of the 2 banks, one came up to -118 AH, (still flashing "Low battery"), the other did not come up at all.
Have I just killed $3000 worth of batteries, and is the yacht club at all liable for having reverse polarity at the outlets?
2 more pieces of information:
Boat was plugged into the mains during December, but the Batt switches were in OFF position, as was the AC switch on the Panel...