Wasn't sure if the pistol or rifle section was more appropriate as this applies to both so dropping it in the Lounge, mods please move if you feel the need.

For optics that use a CR2032 or other "coin" style battery, what's the best option? I've never seen these style of batteries corrode/leak like AA/AAA have a tendency to do, but does going to a Lithium battery offer added protection? What about brands? I've had nothing but awful luck with Duracell so won't even consider them. Energizer Lithium seem to get good reviews and are available in bulk packages online for a decent price.

I really need to get better about replacing all my red dot batteries on a set schedule and thus what drove the questions.

The issue with buying online is you don't get to see the expiration date of the package. You get what they send you.

I use Energizer CR2023 batteries and have had no issues with them.

I will never buy Duracell batteries again. Leaky Chinese shit.

CR 2032 batteries can also leak and corrode. I removed an afflicted bios battery on a motherboard a few weeks ago. I use either Duracell or Enegizer.

I use Energizer lithium batteries for my optics and lights. They work in the cold better also.

Develop a habit.

on 1 Jan of each year - I change all the batteries in Optics, Red Dot Sights, and Weapon Mounted Lights. This keeps them all fresh and working. And gives me the opportunity to inspect the housing.

In addition, I fill out and mail ATF 5320.20 forms for each site/address that I anticipate on being at with Class III items. Two complete forms are sent for each address.

Just a habit that I've done for a long time.

Andrew

quote:

Originally posted by El Cid 92:
Develop a habit.

on 1 Jan of each year - I change all the batteries in Optics, Red Dot Sights, and Weapon Mounted Lights. This keeps them all fresh and working. And gives me the opportunity to inspect the housing.

Exactly what spurred the question.

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I'm not a LEO on night shift, changing batteries once a year works for how often I use my red dot sight.

If I was a LEO, I would change batteries a few days prior to weapon qualifications. If access to the battery requires the red dot to be removed, both a battery change and a range trip to confirm the red dot remains zeroed would occur.

Every manufacture has batteries that leak.

Weapons going into the safe that are not intended for immediate use have no batteries installed.

Personally, I avoid units that must be removed from the weapon (causing a loss of zero) just to change the battery. Not every red dot that requires the unit to be removed from the weapon to change batteries looses their zero. Trijicon RMR seems to keep its zero after changing batteries even through it must be removed from the weapon to do so. Although, your experience may vary....

I never purchase batteries online, I get them from local high-volume camera shop.

I never use the battery that comes with the optic, no telling how long that battery has been waiting to be used.

I zero at 10 yards because I can see point of aim point of impact. I fine tune my zero at 25 yards. I know that at 50 yards, the Federal HST 147gr that I use will drop about 1.4 inches from my 25 yard zero.

Cat Crap defogger (yes it is a real product, no do not take crap out of the kitty litter box) is a great product if you encounter fog buildup on your red dot sight.

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Nice to have a high volume camera shop, but some of us live out in the boonies, small towns so do not have that luxury. I order online, look for expiration dates, or send message asking for date to be supplied. No problems so far.

quote:

CR2032

Does this even exist in any thing but lithium technology? I've had no problems with Duracell and everyready, but OK that's a small sample size.

quote:

Originally posted by hrcjon:

quote:

CR2032

Does this even exist in any thing but lithium technology? I've had no problems with Duracell and everyready, but OK that's a small sample size.

My experience as well.

I get packs from Amazon and keep them in the freezer. Seems to work ok, no leaking even from cheap Chinese shit. I have developed a cough, though.....LOL.