Pluspol gets hot

Good morning dear people, on Saturday morning 1 week ago, when we wanted to go on vacation with him, I noticed at the check that the battery was badly deformed (expanded) and the plus pole was extremely hot in idle mode with switched on climate. Battery cursed, new built-in, but unfortunately the same phenomenon: In idle without switched on consumers the plus pole becomes hot, however, so that one can still touch it. With switched on climate and/or more consumers it becomes so hot that one can not touch it for more than 2 seconds without burning itself. Isolation still ok. We are glad not to have remained with a cable fire in the South of France and have started the adventure third in the Fiesta, which has fulfilled its service well. Now the V40 (1.8 122 hp from 2001, 212,000km camshaft adjustment defective, tooth belts and engine storage due, ventilation windshield blows into the dashboard) and I think about it for the first time… well.