Originally Posted by
noglider
...Are there rechargeable cells compatible with CR2032 cells? CR2032 cells are normally 3V whereas most rechargeable stuff lately is 3.4V. That may not matter for airtags but I don't know.
CR2032 Desktop experiment
Different topic, days or maybe weeks ago we discussed stickers for Bike Index. One other sticker you can consider in event of theft is a decal with your last name on it. I have bought decals on Ebay for a few bucks. Most recently from this seller, three inches long, I used Michland font. Fits nice on a toptube on one side. My last name on the decal is nine characters.
https://www.ebay.com/itm/387272378522
Probably adjust length for number of characters. A thief that wants to keep a bike will try to scrape off the decal but a thief that only wanted it for a free ride or that plans to resell it the next day might not think to bother.