I just spent my first full week with my X213 and no hook-ups after my solar install. We had a less than ideal site with pretty good tree cover. My panels never saw open sky the whole week. We had a couple heavy thunderstorms and partly cloudy days. We used the porch lights several hours every night. Regular use of the interior lights, ventilation fan, water pump (water heater and fridge on propane - which worked surprising well...good enough that I want to make a propane kegerator to take with me
). Everything worked like a charm...although the battery never did get back to a full "float charge" state during the day the whole trip with cell phones and tablets plugged in to charge at night. The battery dropped to 2/3 on the power panel by bed time and was recharged, even with the limited sunlight, back to full within a couple hours after sun-up.
Pretty happy with the system I installed - but if I had to do two weeks without power I'd probably opt for a little more battery capacity just to be safe (In fact I plan on going to 2 6V batteries when I have a chance in the spring)....to account for rainy days where we decided to hang at the camper instead of visiting places.
On a side note...that little fan that's in the bathroom is a piece of junk...no it didn't break but it can't move air to save it's life (and isn't the most pleasing sound). Has anyone upgraded their bathroom fans? If so what did you go with. It got cool at night where we were camping...but getting the camper to cool down at night was a pain (we did have sun on the camper just not on the panels....).