CJW8 wrote:
I just ran your test with my single cup Keurig brewer by Black and Decker. My batteries are 3 ea. group 24's and they were at 12.78 V.
However, at 5 am, I will not have 12.7X to start out with. It will be more like 12.5-12.2.
SoundGuy wrote:
And therein lies the rub. :R
3tons wrote:
Opinion without empirical metering, and there really is a purple Unicorn ...
And who says I haven't done this "empirical metering" of which you speak? :R. Fact is, when dry camping I do exactly what the OP is proposing - power both a coffee machine and toaster with an inverter - but voltage / power measurements made it obvious that imposing a huge current draw such as the OP is proposing results in
significant voltage drop ...
and if one starts with the battery bank resting at anything less than 100% SOC the depth of voltage drop is even more likely to trigger an inverter's low voltage alarm and shut it down. The solution is obvious - either
significantly bolster battery bank capacity
far beyond what the OP currently has OR reduce the load. Since I have absolutely no interest at all in maintaining a quad bank of batteries just so I can make coffee & toast I chose the latter, a choice I've repeatedly proven works just fine. That's not "opinion" but
fact. :p
