Same as you, I get very agitated when I lose a perfect shot with a flat battery. Maybe one day they will invent cameras with no batteries 😉 !LOLZ
I don't know Olympus, but if you say that they are good, then I know that they are good. When Marian's uncle died, he left me a case filled with a Konicka camera and many lenses. The case is at rest on our bookshelf, as the Canon has spoilt me. My first was a used PowershotSX450, that I bought in 2002, in order to take shots of our charity work, but then Mother nature invited me, and I had to get a bigger Canon. Eventually I bought a new SX60, and it was my best camera. They replaced it with the current model, SX70, and I was very sad, as the SX60 was much better 🥴