During a very recent weekend getaway, I picked up our 181 at the storage lot to find that the battery only had about 2 volts of power. I hooked it up and thought that maybe it would charge up on the way to our destination which was about two hours away. When we were setting up the trailer, I found that I could not operate the slider. I could hear the motor trying to work, but nothing was happening. I again the checked the battery charge and now it showed about 6 volts. So, I took the battery out and took it into Angels Camp to O'Reilleys. The tested the battery, showing no cranking power with about 6 volts and dropping fast. With that option, I bought a new battery and headed back to the campground. Once I installed the new battery, everything was fine and I was able to operate the slider. BUT... my two questions are: (1) Where is the manual crank point located to manually open the slider during cases like this? (2) Once I had the AC power hooked up to the trailer, wouldn't the DC converter take over and operate the slider? I checked all the fuses and nothing was wrong there. I am happy that the new battery was the problem, but it was not that old to start with. Unless, I happened to get a defective battery installed on my trailer by the dealer, or it was just time for it to die. Good thing I found out on this trip, because our big road trip is in another week. Not sure I would have wanted to have this experience in the middle of nowhere. Thanks everyone, and I look forward to answers to my two questions.