I have a 2020 AT4 with 5.3 V8 with 1800 miles. Did not drive for three days and went to start and truck was dead. Battery was at 3 volts. Charged all night. Took into dealer next morning. They did the break/ app recall service and said maybe you left a door ajar or something that drained the battery . Not feeling real confident that it want happen again. Luckily it was in garage at home. I live in S Texas so cold environment is not an issue.