I never stop learning!

I learned this summer that the reason my new Alpenlite came with two deep cycle batteries instead of one (like our old Lance 1150) is because electric (Atwood/ with remote control) jacks will not operate without two batteries installed in parallel. You can only operate two jacks at a time with one battery installed. (we had a battery short a cell and eliminated it from the system until we got home to replace it.) Also I learned that while plugged into shore power, or generator power neither has an effect on the jacks. They only run off two functional parallel batteries. I read many years ago on this forum that shore power superseded the batteries, that is not the case. I also learned this summer that my shower drains into the Black tank not the Grey. Only Bathroom sink and Kitchen sink drain into Grey. Black is Toilet and Shower. I never stop absorbing knowledge!