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Dry Cell Battery Storage

10/13/2025 7:38 PM

Okay, I just came across a bit of a puzzler.

Dry cell batteries. Storage of these handy little workhorses of modern technology.

In 2022 I opened a newly purchased factory package of 40 ea. AAA big name cells and put a few into service in flashlights. I have a plastic storage container that would hold the unused surplus new batteries, but not quite enough room for all of them. So, I took four cells (the quantity required for one flashlight) and taped them together (using painters blue tape), did this twice. Randomly, one repack had all four oriented the same, the other repack had two cells anode left and two cells anode right. These were taped in a natural nesting sort of diamond shape, no separator used.

Today I needed some AAA for something, randomly tore open the 4-pack with two left/two right orientation, and as I generally do I hit them with a digital VOM before installing. All four batteries were exactly the same disappointing reading of 1.416 VDC. Cracked open the other all oriented the same pack, checked them, read these at about 1.610, varying a little bit, plus or minus 0.005 volt.

While hardly a controlled experiment, this seems to point to a conclusion regarding the storage of dry cell batteries… at least this manufacturer… at least in AAA size.

It it simply serendipity that four cells with exactly the same undervolt were taped together, or did the left/right orientation cause some sort of self balancing and discharge event?

I can conduct a more controlled experiment on this, but you guys may be able to save me three years or so!

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#1

Re: Dry Cell Battery Storage

10/14/2025 2:53 AM

Those batteries depended on a reaction between 2 substances by moving holes or electrons around. Unfortunately they did not lasted forever and power would be lost. The taped together were exposed to the same environment (heat) and suffered the same loss. keeping them refrigerated may retained more power.

What you need tp do is to look at the bottom of your storage bin and collect all the electrons or holes and put them back (not serious).

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#2
In reply to #1

Re: Dry Cell Battery Storage

10/14/2025 4:59 AM

Your suggestion of scooping up the escaped electrons for reloading in the batteries may have some merit! Thank you for this, I hadn’t thought of trying. I’m hitting that Good Answer button for you.

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#21
In reply to #2

Re: Dry Cell Battery Storage

10/18/2025 6:21 AM

If you scoop up all of the holes, and electrons, you could string them up on a keyring and use them whenever you needed a few.

You could drill the electrons,(using an electron drill bit) and you could have a donut, a electron surrounded by a hole which could be used for either purpose. The hole or electron should be coated with Glyptol or similar coating to prevent short circuiting.

This might be better than Lion batteries.

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#3

Re: Dry Cell Battery Storage

10/14/2025 6:27 AM

Recharging a dry cell - I had a wireless alarm system with pm9 at the sensors that had to be replaced when flat. One night i did not have any stock and i recharged the pm9 with a 12 volt charger for a few seconds and could at least sleep until the next morning.

Thanks for that ga button. I was previously registered on CR4 with a few GA's but I suffered a stroke some time ago and did not pay the internet provider and cannot remember passwords.

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#6
In reply to #3

Re: Dry Cell Battery Storage

10/14/2025 12:54 PM

Welcome back.

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#7
In reply to #3

Re: Dry Cell Battery Storage

10/15/2025 2:46 AM

Hi Koos welcome back firstly.
Re Passwords. Most Passwords today are minimum 8 - 12 digit long, have to contain Upper and lower case letters, a number and a special digit, so pick a name like Plymouth for example and vary the end like v57! So it would read Plymouthv57!
The next one is Plymouthv55! and so on and once you have done it write it down but not on paper, create a folder in your PC and write in the account name like AT&T Pv57!
Macys Pv55! and so on that gives you 10 passwords with the end #0 through 9
Change the 5 to a 4 you have another 10 passwords etc means you can have up to 100 passwords using a common denominator, the 8 digit word, so all you need to remember is ONE word that you won't forget and where you stored the Folder in your PC or mail system. . I have my folder in my Email system, that way I can access it anytime anywhere even if my PC is down or my Internet at home and because its coded I am not worried if someone hijacks my mails, they don't know the magic word.
That way only you know the full word but have all your passwords in one place.
Same for PIN numbers for like Credit cards etc. I store mine in my mobile as I always have it by me when I'm out. Simply combine the PIN into a telephone number. Example Visa Card Write in List of Contacts Name Lisa Tel. 247-378-4516
Last 4 digits are the Pin for your Visa card
Or for your Amex card Max 248-365-3379
You just need something to remind you that links to the PIN, like Visa rhymes with Lisa, Max relates to Amex. That way you always have your PIN code available if you forget it

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#8
In reply to #7

Re: Dry Cell Battery Storage

10/15/2025 4:31 AM

We are always told not to use complete words in passwords as they can be guessed by brute force crackers trying word streams. A good tip I was given (and have never followed) is to use the initial letters from a favourite book or film or song, either the title or memorable line to create an acronym. On my desktop PC, in the stored bookmarks, I add a reminder to the bookmark name that gives me a clue to the password i.e., I might have "CR4 P2" if my password was Panther2 (it's not).

At work, we have to change our log in password every 60 days which is a PITA. It won't allow small variations of a previous password so I'm working my way through the periodic table, element name & atomic number.

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#9
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Re: Dry Cell Battery Storage

10/15/2025 12:36 PM

Spelling a word backwards is one way around the 'dictionary' crack tools. Sprinkle a parentheses or two in there for extra security.

Do you think "supercalifragilisticexpialodocious" is a good one?

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#10
In reply to #9

Re: Dry Cell Battery Storage

10/15/2025 1:07 PM

That seems like a good password, especially if intentionally spelled incorrectly.

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#12
In reply to #10

Re: Dry Cell Battery Storage

10/15/2025 6:35 PM

My problem would be that I would forget how I speeled it incorrectly.

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#14
In reply to #10

Re: Dry Cell Battery Storage

10/16/2025 4:35 AM

You can also change spelling by replacing i.e., replacing 'I' with 1 or ! & letter O with numeral 0 etc.

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#15
In reply to #14

Re: Dry Cell Battery Storage

10/16/2025 7:42 PM

Very true. Our security people recommend that, but honestly it wouldn't be that hard to take a dictionary list of words and then write some code to go through the permutations of @ for a's, $ for s's, |, 1 or ! for i's or l's, and so on. But, it is another level of abstraction.

I'm kinda fond of taking long proper names that aren't dictionary words and sticking unpredictable 'stuff' in the middle of it or as bookends and that sort of thing. The other thing that you can do is to take a phrase or sentence and use the first, first two, or first three letters of each word and that makes a random arrangement of letters. For some of my passwords, my password length is in excess of 16 characters. My password length is generally a function of how 'valuable' that login is to me.

As for two-factor authentication, try to avoid using publicly available email address, e.g. gmail, yahoo, etc. as an authentication because if someone gets your password for your bank account off the dark web or key logger or something like that, and then they hack your email account, they can clean out your account before you realize it's even happened because they change the email to another (theirs) and you don't see the notifications. Happened to a friend of mine. Cell phone text messages are pretty good as long as you don't lose your phone. (And if you do, you can notify your bank, broker, etc. to lock down your accounts until you get a phone back in service.)

People use password managers which sound good, but I'm still leery of them because I figure some day, those too will get hacked. Many of my 'non-critical' passwords I keep in a text file on an encrypted hard drive (work laptop). Any passwords that deal with money, credit cards etc. are only kept in biologic memory with a 'trigger' phrase that helps me recall the actual password.

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#16
In reply to #15

Re: Dry Cell Battery Storage

10/17/2025 2:15 AM

With 11 official languages of which n know 2.5 a simple word spelled as a combination of 3 of them works for me. But I still need to write it down somewhere and finding that somewhere when it is needed is already a challenge.

Incidentally I am using a 5 digit pin and the 4 digit cards accept that .

A one and a lower case L looks the same but the spacing is different so not very useful for me.

By the way the Koos in my username is can be a name of a person but is also a name of a object.

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#17
In reply to #16

Re: Dry Cell Battery Storage

10/17/2025 4:02 AM

Hi Hendrik, please read my mail to you, number 7 hier, it explains how to remember passwords and where to put them so you don't lose them.

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#18
In reply to #17

Re: Dry Cell Battery Storage

10/17/2025 8:06 AM

Hi Wiz

I had my passwords stored on a mail file but I did not pay for a while and was banned – no passwords any more.

I then created an email system in a 10” laptop running XP – the system is now old and not allowed on the internet and I made the mistake of letting XP remember my password.

Long ago I created an office space (35m2) between the house and garage but I allowed my grandson to use the room after my daughter passed away and is now in a 10m2 room. The office is now empty but moving back might be too much trouble for the short time left and I am a hoarder with plenty of (almost) useless stuff.

Hendrik

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#19
In reply to #18

Re: Dry Cell Battery Storage

10/17/2025 8:43 AM

Following through these post, we walked the same path. Welcome back.

I had the same issue walking that path. Afterwards I came across an app called 1Password. I started putting in the passwords I remembered. Unbelievable the amount of passwords I had.

That app I use the biometrics to open it. And one of the issues I had is if the biometric doesn’t work for some reason, like upgrade, new iPad, etc… is remembering the password to get in the app itself and access my passwords. Which can be somewhat a challenge but not impossible..

Without getting too much into commercialization the Security of 1Password uses end-to-end, zero-knowledge encryption with a dual-key system that combines your account password and a unique 128-bit Secret Key.

I’m relieved I came across it when I did.

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#29
In reply to #18

Re: Dry Cell Battery Storage

10/21/2025 4:24 AM

It's not useless stuff, it's stuff waiting to find it's application.

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#28
In reply to #16

Re: Dry Cell Battery Storage

10/21/2025 4:22 AM

KOOS for me is "Knee injury and Osteoarthritis Outcome Score" as used by the surgeons who have replaced one of my knees & will be replacing the other one.

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#22
In reply to #9

Re: Dry Cell Battery Storage

10/18/2025 6:37 AM

How about a palindrome, like: "A man, a plan, a canal, Panama" spelled backwards, or put chips with the complete key board letters on them, put them is a cup and shake it up, then pull them out one a a time to get your password.

Or just throw them up in the air and let them land on a table and pick them up at random from the table top.

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#20
In reply to #7

Re: Dry Cell Battery Storage

10/17/2025 11:17 PM

I've been using a password manager. So far it has worked fine, and I have to remember just one PW in order to find and copy the rest. You can change the length too, and have some control over the special characters used.

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#4

Re: Dry Cell Battery Storage

10/14/2025 8:13 AM

I'm guessing that there could be a tiny bit of moisture plus maybe some contaminants from handling on the outer surface of the batteries. The packets with the reversed cells would have a shorter leakage path and would discharge more over time.

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#5
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Re: Dry Cell Battery Storage

10/14/2025 10:49 AM

Could be, I guess.

I have discovered the outer shells (steel? Battery is slightly attracted to magnet) of these batteries are covered with an adhered plastic covering. Peel this cover off and carefully clean the remnant adhesive from the battery shell with mineral spirits, and the entire outer shell is a positive terminal. This may or may not be so in all currently manufactured AAA batteries; it is so in the three examples that I have on hand.

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#11

Re: Dry Cell Battery Storage

10/15/2025 1:37 PM

Older batteries (before plastics were invented) was protected by a paper /cardboard sleeve.

The terminal connected to the carbon rod in the centre is known as positive and polarity sensitive devices label the connector without the spring as positive.

I guess a flash light did not care about polarity.

In should not make much difference to flip the direction of every second battery - flipping them inside out may not even matter.

Power is generated by a chemical reaction and the substance between the carbon centre and the metal case seems to voluntary decay over time.

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#13

Re: Dry Cell Battery Storage

10/15/2025 7:05 PM

I just purchased this from Amazon.

Battery Organizer Storage Holder Box Case with Tester

My wife was complaining... I have a number of these at my rentals. And I didn't have any at my house.

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#23

Re: Dry Cell Battery Storage

10/18/2025 7:53 AM

It is very possible for the adhesives on the painter's tape you used has some conductive materials that enabled for some of the charged ions from each cell to leak flow... thus may explain the measured discharged potentials to be balanced..

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#24
In reply to #23

Re: Dry Cell Battery Storage

10/18/2025 4:49 PM

I suppose there may be something to the tape fabric or adhesive being a charge carrier.

This alone doesn’t explain why the uniform orientation does not exhibit the discharge or cell balance, but the left/right orientation exhibits both.

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#25
In reply to #24

Re: Dry Cell Battery Storage

10/18/2025 6:49 PM

Could it be the difference in the distance from the poles ? With the opposing poles there is only a 4.5mm gap between the poles but where they are all facing the same way there is a 45mm gap !

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#27
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Re: Dry Cell Battery Storage

10/18/2025 8:20 PM

I’m guessing it could be. I’m also guessing that a 4.5mm air gap wouldn’t carry a charge at 1.5 VDC. I dunno, but maybe.

This is the puzzle! Like a Trivial pursuit game, for the green pie!

These batteries spent about three years taped together in this left/right orientation. Time and proximity, as you point out, might be the magic combination.

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#26
In reply to #24

Re: Dry Cell Battery Storage

10/18/2025 7:30 PM

I suppose that all of the 4 cells individually being connected in a series / parallel type of connection thu the tape's adhesive, behaved like a balanced wein bridge...

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