I went on a tubing trip down river yesterday and (stupidly) decided to leave my Maxx in my truck. The high was around 90. It was sitting in my truck for around 4 hours. Look at how hot my battery was!!! Luckily, I don't see any sort of permanent damage. I snapped the screenshot then shut it down and let it sit in front of my AC for a while. That thing was HOT!