Not trying to one-up WayWeGo, but I have the ProMariner 12P40......WayWeGo wrote: ↑Sat Nov 03, 2018 5:04 pmFor charging while at the dock, ProMariner chargers seem to be a good balance between quality and price. We have a ProMariner ProNautic 1230P charger that is charging three batteries individually with a total charge rate of 30A. After a couple of years, I couldn't be happier.
And i concur -- i could not be happier. And yes, do consider the advice of the inverter/charger. I went new charger, then inverter because thats what my needs were at the time.
That ship having sailed, so to speak, when i needed an inverter, i cant speak to all the merits of the combined unit. But i can say that my inverter, connected to the battery serving one engine, and sized for 15A output, is appropriate for my needs. It has a low voltage cutout, so it will not completely discharge the battery. That said, the cutout protects the inverter, not the battery. The voltage setting is so low that routinely tripping the cutout will lead to early battery death. The point is, you need to shop carefully for your individual needs.
If you go the inverter/charger route, investigate whether all batteries supply the inverter, or whether you can use just one, saving the others for engine starting.
As for keeping the fridge running for x hours...... what i did was buy a kill-a-watt to measure actual energy consumption. That way i had real-life energy consumption numbers, and did not have to rely on nameplate ratings. Note that fridge energy consumption will vary with ambient temperature. Good luck!