I’m an electronics junkie, too. Taught myself to solder at age 10 so I could put together a kit walkie-talkie from Allied Radio. New Lithium Iron Phosphate batteries are amazing. I have a couple for my ham radio. Even charge cycling them daily I expect they will outlive me, and possibly the heir I leave them to.
Just don’t bet your life on a Tesla ‘autopilot’. Not quite perfected yet, methinks.