BTW, we traded trailers on Wednesday afternoon, and Thursday morning discovered that we had left a few things behind, so we drove back up to get them. The salesman unlocked the trailer, but since the slides were in and we needed in that area, went to get someone to provide power to the trailer. Meantime, I noticed that the batteries were fully charged, and connected, so I put out the slides, got the stuff, put back the slide, and waited for the salesman to return. He was surprised, until I told him about the solar