We have a Moody 376 in Greece
. We bought the boat
in November and spent the winter in the marina living aboard
and refitting her to sail for the next season. On plugging her in to shore power on the hard
in preparation for splashing we discovered the Victron charger
was pooched, cooked all the house batteries
. So replaced the charger
with a Sterling charger and all the house bank (4x 100Ah wet cells). added 2x 150W solar panels
and an MPPT
charge controller. changed all incandescent lamps for LED's.
Once we set off sailing we found that after 3-4 days our fridge was turning off, we traced this back to a battery
protector which was shutting off the fridge as the battery
bank voltage fell below the pre set limit to prevent the bank being damaged by over discharging. This was despite the solar panels
dumping charge into the bank all day in the strong med sun. We added a 5th 100Ah battery to the house bank, now sitting at 500Ah.
During me rewiring the main panel I blew the battery protector on the fridge circuit and replaced that with a new one.
So we have a 500Ah house bank serviced by 300W solar
charge controller for on the hook/cruising. We still are forced to run the engine
after 5-7 days or head
in to shore to top up on shore power
In terms of draw we only have 2 items that draw 24/7:
One Danfoss refrigeration compressor
running a standard evaporation plate and a second Waeco system with a holding plate. Both evaporator plate and holding plate are in the same insulated box.
The rest of the draw is intermittent and used sparingly:
all lamps are LED's
B&G Zeus 9 chartplotter
Navman 7110 VHF
200W pure sine wave inverter
12v USB charging
for all tablets/phones/handheld VHF
With 500Ah and 300W solar
we anticipated being able to be able to go for more than a week or so without having to run the engine
or hook up to shore power. I see others on this forum doing more with less.
Is it a lack of solar? We had the batteries
load/stress tested as we had them down below 11.4v a couple of times and we were told they were fine.
Suggestions to improve/troubleshoot the system/make the vessel more self sustaining WRT power?
Thanks in advance for suggestions/advice.