This is just storage. The article describes that the battery will use nearby solar panel for electricity.

True.

I still have my 1080p LCD monitor from 2010s working fine.

According to the article OLED has 5% chance to have burn in after 2 years. The article also mentioned Rtings test 10 years usage for OLED monitors.

According to the article, QD-OLED can also improve the image burn-in by using firmware and algorithm.

Counting the hour uses, leveling with most burnt pixels, reduce the luminosity, giving pixels extra luminosity to use when there is burnt in.