I don't even want to replace my battery. I want it to last. At least 5 years.
Bring legislation that enforces a 5 year warranty on batteries that are built-in. That would help the environment much more than being able to replace a battery every year that shouldn't fail in the first place. And yes, it's possible to build batteries that last longer. It's more effort, true. But so is building exchangeable batteries or doing an exchange. I rather shell off 50 € more for my phone when I know that the battery will make it 5 years.