How to store blistered NIB-Calculators?

[Rookie]

(02-04-2018 10:32 PM)toml_12953 Wrote:  If they're blistered, I'd apply some ointment. What I do is apply hole reinforcements usually used to fix tears in paper sheets stored in a three-ring binder. Then I hang them from a hook. There's no pressure on them anywhere but the hole where the reinforcement is. This eliminates shelf wear. It does take a bit of room to store them that way but if you have rare, expensive calculators, it's worth it.

Sorry I did not get this. How do you get rid of the batteries?