I know the general topic of lithium batteries has been covered ... but tonight was the night I changed my first set installed two years ago. Prior to that it was Duracells. So it was a total of eight pins on Energizer Lithiums. The rest of my pins are NVRAM, Alltek, etc.
Anyhow, I'm happy to report there were no leaks, and all 24 batteries still read 1.7 volts. I will be using them up in my cheaper electronics.
A new full set of Energizer Lithiums went in. I can scratch that item off my list for another two years...