I remember all of those things, had a Penguin before upgrading to our current Sea Dragon .
ie 14.44-5 OB (with onsuite)
Back on topic, I leave the battery switch on all the time. Battery is used to keep power to the Gas detector etal so does drop a bit overnight but even with the cover on, enough light gets to the solar panel to trickle charge it up again the next day. Have my van in storage so can’t plug it in to 240V until I bring it home when preparing for the next trip.
Did really enjoy the Penguin with its all round views but prefer the onsuite and not having to wind up when setting up. Ok, we have to lift the roof but hey can’t have everything easy!