Mr Happy
Flashlight Enthusiast
Looking for some new batteries again for an audiobook, SR44s are kinda expensive. Anyone got any hot tips on sales??
Check out dollar stores. You can often get LR44's on a card at 3 or 4 for a dollar.
Looking for some new batteries again for an audiobook, SR44s are kinda expensive. Anyone got any hot tips on sales??
Energizer Ratings:
Otherwise, I buy Energizer Silver Oxide 303/357 from Amazon or Ebay at around $10 for a pack of 10. Mostly for devices of value (low risk of leakage), or places I expect to leave the cells in for years of low-drain or occasional service.
The battery nomenclature is defined by the International Electrotechnical Commission (IEC) in its 60086-3 standard (Primary batteries, part 3 Watch batteries). The letter "L" indicates the electrochemical system used: a zinc negative electrode, manganese dioxide depolarizer and positive electrode, and an alkaline electrolyte. "R44" indicates a cylindrical ("round") cell 11.4±0.2 mm diameter and 5.2±0.2 mm height.
Don't forget the car remote battery I think A23 which years ago in the forum some people who couldn't find a cheap source of AG13/LR44 batteries would take apart because they contain 8 batteries in them. You used to be able to buy them for about $1.25 each in a 2 pack at Walmart but now that 2 pack is closer to $4.This appears to be the encyclopedia thread for all things LR44/SR44. Maybe this should be a sticky? I am posting to mention the existence of a 6V primary cell called 4LR44 (Duracell 28A or PX28AB, and Energizer A544), which is actually 4xLR44 cells wrapped up, and would work in any application that uses 4 stacked LR44 cells, or 2 stacked 1/3N cells. Interestingly, it is roughly the same size as a 4.2V 10180 Li-ion secondary cell, which highlights the fact that the LR44 has a diameter around 10mm, just like a AAA/10440 cell, which I believe is as tall as 9xLR44 or perhaps 10xLR44.
from wikipedia:
Don't forget the car remote battery I think A23 which years ago in the forum some people who couldn't find a cheap source of AG13/LR44 batteries would take apart because they contain 8 batteries in them. You used to be able to buy them for about $1.25 each in a 2 pack at Walmart but now that 2 pack is closer to $4.
I would tear them apart and use them if you don't think you would ever use the batteries as alkaline button cells tend to go "stale" after 4-5 years although at times they can be fine for even 20 years later it is not a good gamble to put trust in them not leaking or going bad. I've found at times with devices using multiple batteries something only one goes bad or leaks the rest may be fine so even if you have an A23 that measures low you may be able to rip it apart and find 5-7 good button cells in the mix.That`s 23A i bought a pack of 5 for my front door bell i bought 5 years ago and it`s still on the battery it came with.
So if i run out of LR44 i will get the pliers out.
John.
I would tear them apart and use them if you don't think you would ever use the batteries as alkaline button cells tend to go "stale" after 4-5 years although at times they can be fine for even 20 years later it is not a good gamble to put trust in them not leaking or going bad. I've found at times with devices using multiple batteries something only one goes bad or leaks the rest may be fine so even if you have an A23 that measures low you may be able to rip it apart and find 5-7 good button cells in the mix.
I got rid of a lantern with 8 D cells dated 2007 expiration that worked that were never in the fridge and lived through 110 degree weather (90 indoors). The thing is I haven't figured out why some button or coin cells go bad without use and others are good for a decade but the chance of it happening is a lot higher than larger batteries for me.They have been in the refrigerator since i bought them, I have 6 EverReady Gold D alkaline in there for like 10 years and they seem to be OK.
John.
Those tiny cells in the 23A are not the same size as LR44. I think they are closer to LR41 in size.
I learn something every day...... I just took it for granted that was what was in it since someone reported in the forum that they took one apart. I just looked up the LR932 the closest size is the AG9 but no direct cross reference in wiki and are a little smaller with about 2/3 of the capacity of AG13/LR44. Even though they are smaller and lower capacity I guess they make work in a pinch in some devices. In LED applications 4 of these could possibly squeeze in the same space as 3 LR44 batteries perhaps.I will bust one open and report back.
EDIT: They have LR932 written on them.
John.
I learn something every day...... I just took it for granted that was what was in it since someone reported in the forum that they took one apart. I just looked up the LR932 the closest size is the AG9 but no direct cross reference in wiki and are a little smaller with about 2/3 of the capacity of AG13/LR44. Even though they are smaller and lower capacity I guess they make work in a pinch in some devices. In LED applications 4 of these could possibly squeeze in the same space as 3 LR44 batteries perhaps.
I doubt anyone has as LR44 button cells aren't hard to find and 23A batteries have gotten more expensive such that it isn't really worth the trouble of buying them to harvest batteries from them.Well i hope nobody ordered any 23A battery to get the LR44 out of them
John.
bought a bunch of 2016s once from an asian website and half of them went bad sitting around waiting to be used. I use 2032 in my bathroom scale and was having a hard time finding one to not give me a low battery warning even though they test over 3V. I've also had a batch of about 12 AG13(LR44) go bad on me 2 years after I bought them on ebay but the 8 I used paid for the whole batch as it was cheaper for those 8 than buying them locally.I was just on amazon UK, they had 50 cr2032 for £10 and they got good reviews, my 3d TV glasses use them if I use them any more.
John
I use these things in everything. I bought a pack of 50 off ebay for like $10 + shipping and they seem to go fast.
I have no idea what type they are as all they say on the back is "AG13 Button Cell"
I am assuming the alkaline types are the better ones but how can you be sure your getting good ones and where can i buy them in bigger than single quantities? A 10 pack would be good, or more if the price is right.
Thanks in advance