It’s my first language. Why is it funny to you? I’m dead serious when I say that “years” implies more than two in almost all contexts.

If someone said “that’s years ago” I’d assume 5+. If someone said “it’ll be years before that’s released” I would again assume 5+.

To be two I would expect “that’ll be out in a couple of years”, or “in a year or two”.

For this ring I would write “battery life is between 12-15 hours of use, which will typically last about two years under normal use”