Finally decided to put cover on as the hot weather is on the way, was told its a 2 man job but can be done with one,so I asked my wife, just to make it easier, after about an hour of swearing at each other , I was ready to burn it.. But we persisted and we did get it done , I must be doing something wrong , it looked easy on the how to video. Anyway was surprised to find that the solar panels actually charge through the cover, I let the battery drain to about 12.7 at night and went

back in the next day and it was back to 13.7