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Slater
02-21-22, 13:14
If you're not going to be using your optic for a period of months, is it OK to leave the battery installed or should it be removed?
Johnny Rico
02-21-22, 13:30
What type of battery? The only type of battery I'm comfortable setting and forgetting is lithium.
gunnerblue
02-21-22, 13:32
I've had alkaline batteries corrode and become stuck in optics and flashlights over time but have never had the same issue with lithium batteries
Slater
02-21-22, 13:32
This would be a CR2032. Presumably they aren't known for corrosion?
Crow Hunter
02-21-22, 13:44
This would be a CR2032. Presumably they aren't known for corrosion?

You should be good.

I have had those in things for years (over a decade in a computer) in hot/cold/etc and never had a problem.

This is optics, computers, garage door openers and security system sensors.
Johnny Rico
02-21-22, 13:47
Assuming it's a lithium you should be good to go. I can't recall ever seeing non-lithium 2032s.
Jellybean
02-22-22, 13:21
If only s couple months, and batteries are pretty fresh, wouldn't worry about it. If 6 months or more, I'd consider pulling them.
If anything Duracell, take them out right now and throw them in the trash, then replace with something more suitable...
markm
02-22-22, 13:43
I think I have a 2032 in a cheap RDS in my 10/22 that's been there over 5 years unused. Not a problem. AA and AAA batteries though.... they'll puke on your electronics
Johnny Rico
02-22-22, 13:45
I think I have a 2032 in a cheap RDS in my 10/22 that's been there over 5 years unused. Not a problem. AA and AAA batteries though.... they'll puke on your electronics

True for alkalines. I use a lithium primary in my Aimpoint M4S without issue.
markm
02-22-22, 14:27
True for alkalines. I use a lithium primary in my Aimpoint M4S without issue.

Yep. I think Pappabear had a comp M4 that the battery started to puke. He switched all of them to Lithium after that.
ViniVidivici
02-24-22, 15:21
I've left CR2032s in multiple optics for months/years, never any problems that I can tell.
odugrad
02-24-22, 16:01
If only s couple months, and batteries are pretty fresh, wouldn't worry about it. If 6 months or more, I'd consider pulling them.
If anything Duracell, take them out right now and throw them in the trash, then replace with something more suitable...

Is there a problem with Duracell 2032s that I don't know about?
georgeib
02-24-22, 16:28
If only s couple months, and batteries are pretty fresh, wouldn't worry about it. If 6 months or more, I'd consider pulling them.
If anything Duracell, take them out right now and throw them in the trash, then replace with something more suitable...


Is there a problem with Duracell 2032s that I don't know about?

Curious about this too, AFAIK Duracell CR2032s are made by Panasonic.
odugrad
02-25-22, 06:09
I've actually got Duracell 2032s in several optics.