profdant139 wrote:
I am sure this is all too simplistic, but I am looking for something that an average RVer can easily do, rather than a very technical person.
Is this "plug and play and measure" method adequate? Or is there an even simpler method that I am overlooking?
None of the above is very complicated nor technical, It all depends on how granular you want to get. But no matter what you do you can't get away from investing the time in making the measurements. Knowing the inverter efficiency and load is fine as long as that is the same test you run every time, but it still doesnt tell you how long the system will last on the loads YOU normally run. Nothing technical about what I did above except the @20A, draw also matches the claimed battery spec load (and MY load habits)
