Chosen Solution
I place my laptop on a laptop stand when using it. After several hours of use, the upper right corner over keyboard next to adapter input slot becomes very hot. It sounds as though the fan is on. When I attempt to type, the characters drag behind (slow to populate). I turn the computer off for a few minutes and turn it back on and no problem. Again after several hours of use, the same symptoms present themselves.
Well your Battery is cooking! 109º degrees! So the battery is in need of replacing. Looking at the manufacture date 2016 this battery is long in the tooth as well. Time to replace! MacBook Air 13" (Late 2010-2017) Battery and here’s the guide MacBook Air 13" Early 2015 Battery Replacement
