I deploy my jacks with the motorhome motor still running. I imagine a fifth wheel owner could deploy the jacks and slides in the same way, so the power doesn't deplete your house batteries. I have gotten a lot more life and power out of AGM's than I did with LA batteries. The AGM's also need very little maintenance, so I think they are worth the extra cost. One hint is to look for craigslist ads for AGM's that are overstock or are being retired from UPS systems. A good way to get new or near new batteries for a fraction of the retail price.