The Ryobi lithium batteries I got with my first cordless drill bundle at Home Depot in 2006 still work and still hold a useful amount of charge today. And the charger I got back then will charge the newest batteries - not as fast - but they charge.

Pretty amazing compared to what all batteries were like growing up in the 90s.

Yeah, I have had a similar experience with a cheap craftsman drill that has lithium batteries. I don't use it a lot and it pretty much has a charge when I need it.