He used up 100% of his battery.

If you mean the OceanGate submarine, it seemingly spectacularly imploded after its carbon fiber structure gave in to various microfractures. If that really is what happened, the water pressure killed the crew faster than their brains would’ve processed anything.

I really hope microLED takes off in the near future. It’s basically OLED on steroids, all of its advantages without the risk of screen burn-in. It’s just too expensive right now…