pianotuna wrote:
adamis,
Starting with the RV at -30 in storage, how do you plan on heating the batteries up? You can't draw much current from them, so you can't run the furnace. It is a fail.
There is a good solution which doesn't involve Li.
You would start your furnace to warm the batteries, or if you have a battery heater yo would switch it on.
However, it is only a tiny percentage of folks who live anywhere where it regularly gets to -30, and of that percentage it is a vanishingly small number of folks who go camping in those conditions. You maybe one, but that does not imply that your limitations apply to others.