I'd bet there is a 18650 in that Sonicare too. And they probably designed the thing such that you wreck the case if you ever tried taking it apart to get to the battery. I suspect if you get three or more years out of a Sonicare you're doing pretty good. Keep in mind the refills for a Sonicare are only 80 cents.
I need to do some more on my truck too but it's only 40's and wet here today. 60's and sunny tomorrow so think I'll wait.
Legend benefits from some aging even more than DF. But then that's all opinion.
That reminds me! We bought those replacements from Amazon based on your glowing recommendation. Therefore, if they fail us, I’m blaming you. You’ll owe me 100 mL of Dragon’s Fire and we’ll call it square. Aren’t you glad you spoke up?
So far so good. Heh heh.