Summary for Nintendo Switch Battery Enhanced Version.
Source from YouTuber include GameXplain, Spawn Wave and Kevin Kenson.
Battery: Yes. increase at least 30-40%
Cooling: Yes. decrease around 5 degree
Brightness: Yes. Can notice if compare both side to side.
Download Speed: Yes. Increase 5 - 10%.
Loading Speed: No.
Joy-Con: No. But there are 2 version Joycon. Serial end with 02 and 03. 03 version should fix the sync problem but not the drift problem.
