battery — Toyota Solara, 2.4 liter, 2003
It looks like the battery (Fireball) will still have to be changed. He took it off (in the cold it was not a pleasant occupation), unscrewed the covers, and found inside ... ice.
My brother brought the charger, charged it in the heat for an hour, put it back, tried to start it. It started up, but after about 5 minutes it died out, and the lights began to go out.
Tomorrow morning I'll go buy a new battery, since the store is nearby. I hope it's just him. Apparently, a complete discharge twice plus the frosts finished him off. In any case, I definitely need a battery with ice.