I got into this discussion thinking it was about using an inverter to change 12VDC battery power to 120VAC and run a 3-way fridge using it's 120V AC feature. I apologize if I misunderstood what you were writing about. Running a 3-way on 120V using an inverter to supply power from a 12V source will be a big draw on your battery.ReenieG said:... As for the 3-way fridge I have, it uses much less amperage on shore power than the 12v setting. Of course propane is best but I want to try it with an inverter when hookups aren't available.
At night the solar produces zero power, so if you have anything on in the trailer, consumed aH is always going to show a negative number first thing in the morning. Then, as the solar produces power, that negative number should gradually diminish (as long as solar power in > power being used) until consumed aH gets back down to zero.Joel said:
But the shunt reading confused me. Around noon yesterday it said "consumed Ah" was 0Ah, even though the trailer had been "boondockiong" in my driveway for four days, and a few days before it read -25Ah. This morning at 6:30 a.m. I checked again and overnight the battery had dropped to 13.07v and consumed Ah was -27Ah.
Does that seem normal? I can see how the solar charge varies, but how can I tell what my usage is, and more specifically, what I can do to reduce that usage?