No argument here, my comment was only to say that since you have to exercise the gen 1x/month anyway, use the time to charge your batteries. Also, solar is only a trickle charger, some people think, well, I have solar so the batteries won't go dead. My experience says that for one reason or another, batteries will let you down if you are not plugged in. At our storage yard, we waited years for the one spot with an electric hook up. No battery issues now, and I check every week. We're in a covered spot, so our one solar panel won't charge the batteries. A vandal could pull out our 30a cord from the receptacle just for kicks, they used a slingshot to shatter the big window on the curbside, and someone pulled off and stole the cast Beaver emblem from the front cap-nothing to do I guess. Diligence, and a good 30a hookup, will help save your batteries.