Talk:AA battery

message: What is the point of having the "A Battery" redirect point to this article, when this article makes no attempt to explain or discuss the "A Battery" type? I do see in the references an article for "A Battery (vacuum tubes)" which is the more logical redirect target, and so I'm changing the redirect to point to there.
DMahalko 12:22, 10 July 2007 (UTC)
thread_title:  Why redirect "A Battery" to this article? 

message: Is it the same as "LR6"?  —Preceding unsigned comment added by 81.203.47.149 (talk) 11:59, 1 September 2008 (UTC)
thread_title:  What means AM3? 

message: The image :Image:NiMH 2500mAh.jpg is used in this article under a claim of fair use, but it does not have an adequate explanation for why it meets the requirements for such images when used here.  In particular, for each page the image is used on, it must have an explanation linking to that page which explains why it needs to be used on that page.  Please check
:* That there is a non-free use rationale on the image's description page for the use in this article.
:* That this article is linked to from the image description page.
This is an automated notice by FairuseBot. For assistance on the image use policy, see Wikipedia:Media copyright questions. --04:27, 23 September 2008 (UTC)
thread_title: Image copyright problem with Image:NiMH 2500mAh.jpg

message: Due to common usage the term battery has had its original meaning changed. A battery is a collection of things, guns for a gun emplacement and for electrical cells we have the standard 9v battery. This is the only correct use of the word battery that one usually buys at a convenience store . All AA, AAA, C, D and all their sub-groups are really cells. But who would walk into a shop and ask for "AA cells"; but that is what they really are. These days other examples of true batteries exist such as battery power tools and cell phones.
This is good example of how usage changes and often enhances our language. Instead of the buyer having to know how the 'battery' is assembled, all portable power sources use the one description - battery.  —Preceding unsigned comment added by 59.167.234.86 (talk) 06:49, 29 September 2008 (UTC)
thread_title:  Most Batteries are Cells 

message: There seems to be a general lack of citations in this article, most notably, "Nickel-metal hydride (NiMH) AAs are also available in various capacities ranging from 1300 to 2900 mAh.", I haven't seen 2900mAh batteries available anywhere and would really like to see a source for this. Comrinec (talk) 06:15, 23 December 2008 (UTC)
thread_title:  Maximum capacity / lack of citations 

message: The masses of rechargeable AA batteries seem to correlate positively with the capacity. I took some measurements using digital micro scales (0-100g):
Brand                  	Type                            	Nominal Capacity	Mass
Xellex Extra Heavy Duty	Zinc Chloride (?)               	?               	13.4g
Gut und Billig         	Alkaline                        	?               	22.8g
Duracell ProCell       	Alkaline                        	2700 mAh        	24.5g
Energizer Lithium      	Lithium                         	2900 mAh        	14.8g
H&H                    	NiMH                            	1400 mAh        	22.7g
Usance                 	NiMH                            	1600 mAh        	24.7g
FiF                    	NiMH                            	2100 mAh        	28.4g
MODEN                  	NiMH                            	2500 mAh        	27.9g
Panasonic Infinium     	LSD NiMH                        	2100 mAh        	27.7g
Fujifilm               	NiMH rechargable                	1800 mAh        	28.0g Rod57 (talk) 02:10, 11 August 2009 (UTC)
thread_title:  Battery Mass 

message: AA battery#dimensions (1.97×0.56 inches) () are the mm dimensions given in this section and/or this article "real", or are they approximations? Doe(s) (do) the original standard(s) give the dimensions in millimetres or in inches? Could some one be so kind as to clarify? Perhaps I can check this in the references. Peter Horn User talk 21:21, 24 April 2010 (UTC)
thread_title:  AA battery, dimensions/ conversion 

message: Link "Detailed specifications for Duracell alkaline AA battery" goes to broken link. This should be fixed or eliminated.  —Preceding unsigned comment added by 149.32.192.33 (talk) 16:38, 3 June 2010 (UTC)
thread_title:  Duracell Spec Link Broken 

message: I would like to replace the the Energizer battery pic with a brand neutral one. Comments? 196.23.21.91 (talk) 16:43, 26 June 2010 (UTC)
thread_title:  No Gratuitous Advertising 

message: Should we include mention of the NiZn chemistry? --99.110.255.113 (talk) 01:23, 10 November 2010 (UTC)
replies: text: Sure, why not.  Add it to the table, with a reference. --Wtshymanski (talk) 04:07, 10 November 2010 (UTC)
thread_title:  PowerGenix has a NiZn AA battery 

message: Here are some cells claiming 3800 mAh:  http://www.ebay.com/itm/4pcs-3800mah-NiMH-AA-rechargable-battery-/281100883854?pt=US_Rechargeable_Batteries&hash=item4172eb178e
Is this capacity claim fraudulent and/or impossible?  If so, it would be nice if the article could provide information that helps consumers spot these bad deals. 174.24.7.220 (talk) 06:57, 30 April 2013 (UTC)
replies: text: While I understand your good faith intentions, Wikipedia is not a place to post advise. Please see WP:NOTHOWTO. Cantaloupe2 (talk) 21:02, 30 April 2013 (UTC)
replies: text: If the article contained a factual statement such as "The maximum theoretical capacity of a NiMH AA cell is X mAh," this would allow a marginally savvy consumer to spot fraudulent claims, and at the same time would not turn the article into a "how-to."  That's what I'm getting at, Cantaloupe. 174.24.42.61 (talk) 15:13, 12 June 2013 (UTC)
thread_title:  Guidance for consumers 

message: I noticed that the comparison table in this article doesn't list mercury-cadmium? Can this be added? MisterZed (talk) 05:14, 17 September 2014 (UTC)
replies: text: I, for one, am always interested in the obscure batteries of the world but since mercury batteries have been out of the catalogs for a long time, it will be hard to find (Internet) sources for them. And wouldn't that be a better subject to include in mercury battery, anyway? --Wtshymanski (talk) 18:07, 17 September 2014 (UTC)
replies: text:  See the bit at Mercury battery#Mercuric oxide and cadmium.  No idea if these were ever made in an AA size.  The only AA size mercury battery I found a reference to was Everready E502, but it's so obsolete the current Energizer technical data doesn't even have it as an obsolete type. It *could* be an IEC MR06 but maybe the batteries stopped being made before the IEC standard was revised?  --Wtshymanski (talk) 18:41, 17 September 2014 (UTC)
replies: text:  The reason I ask is because I recently bought a ceiling fan with remote control, and it came with two AA mercury-cadmium batteries.MisterZed (talk) 16:41, 28 September 2014 (UTC)
replies: text:  The world is a very large place, but perhaps the batteries you bought were really trying to say something like "(No) mercury or cadmium" ? It would be *highly unusual* to find that obscure chemistry in a recent consumer product purchase - for one thing, a mercury-cadmium battery only produces about 0.9 V. For another, it would be a much more expensive battery than the usual alkaline. If your batteries say something like "LR06" on them, they are almost certainly alkaline (zinc) batteries. --Wtshymanski (talk) 17:21, 28 September 2014 (UTC)
replies: text:  Sorry you are correct - it says 0% Mercury / Cadmium. MisterZed (talk) 22:41, 29 September 2014 (UTC)
replies: text:  Thanks for the confirmation - small battery labels can easily be confusing, and it's a coincidence that batteries made mostly with mercury and cadmium (once?) existed. --Wtshymanski (talk) 16:03, 2 October 2014 (UTC)
thread_title:  Mercury-cadmium battery not listed in comparison table?? 

message: I grew up calling AA batteries either "double A's" or "penlights".  Yes, I know what a penlight is.  We didn't call the batteries "penlight batteries"; we simply called them penlights.  
Today I was asked why I hadn't changed batteries in something.  I said, "I didn't know I needed a nine-volt. I brought penlights."
Okay, so am I alone in this? Theresavalek (talk) 15:11, 9 February 2015 (UTC)
replies: text: Penlight batteries, but never penlights on their own. Penlights were what the double A's were used for! -Roxy  the grumpy dog. wooF 17:29, 15 July 2021 (UTC)
thread_title:  "penlight" 

message: Current lede: "The AA battery is a standard size single cell cylindrical dry battery."
: Option 1 Change lede to "The AA battery (or Double A battery) is a standard size single cell cylindrical dry battery." If this option, I'd also suggest applying the same to AAA battery; at least in the US, it's fairly uncommon to hear someone pronounce it "A-A-A" versus "triple A."  
:Option 2 Leave as is.
===Discussion===
* Option 1 though I agree with an earlier editor in that we absolutely do not need an explanation of how to pronounce the phrase "double A" as it's insulting to the reader. OhNoitsJamie Talk 13:05, 2 August 2021 (UTC)
replies: text: I have changed my mind, but only because I discovered the incoming redirect and it is generally normal to provide the emboldened search text to let the user know that they have arrived at the correct place. 85.255.235.197 (talk) 17:39, 3 August 2021 (UTC)
replies: text:  I don't know...is this really the right place for someone who'd be frightened by clicking on "Double A" and winding up here at "AA" ? Users aren't mindless robots and understand English. --Wtshymanski (talk) 19:32, 3 August 2021 (UTC)
thread_title: Poll: what should lede say?

message: * Option 1 though I agree with an earlier editor in that we absolutely do not need an explanation of how to pronounce the phrase "double A" as it's insulting to the reader. OhNoitsJamie Talk 13:05, 2 August 2021 (UTC)
replies: text: I have changed my mind, but only because I discovered the incoming redirect and it is generally normal to provide the emboldened search text to let the user know that they have arrived at the correct place. 85.255.235.197 (talk) 17:39, 3 August 2021 (UTC)
replies: text:  I don't know...is this really the right place for someone who'd be frightened by clicking on "Double A" and winding up here at "AA" ? Users aren't mindless robots and understand English. --Wtshymanski (talk) 19:32, 3 August 2021 (UTC)
thread_title: Discussion

message: There are rechargeable alkaline batteries in AA and AAA sizes.  At least one type says 1200 mAh and 600 mAh respectively.  As the voltage is near 1.5v, they might be better for some uses where NiMH is too low, and NiZn is too high.  Laser pointers and perhaps digital cameras would be examples. Someone who can research currently available brands (I have seen at least 2) should add these to the table.
agb  — Preceding unsigned comment added by 173.233.167.50 (talk) 21:33, 25 May 2022 (UTC)
thread_title:  Rechargeable Alkaline 

message: Batteries: R6P AA UM-3 1.5V Batteries are NOT Standard AA Batteries, i repeat, NOT Standard AA Batteries as the R6P AA UM-3 1.5V Battery measures less in Length than the Standard AA Battery by 1.5mm. I've got both types & this as i've just stated is the case.  — Preceding unsigned comment added by Patrickmfrancisor (talk • contribs) 19:44, 21 March 2023 (UTC)
thread_title:  Not standard AA batteries {{resize|60%|({{Abbr|Posted without title|Title added by User:Askarion on December 16, 2023}})}}

message: The comparison table lists max capacity at fixed current. This is a worthwhile comparison if and only if the batteries have the same voltage.
Power draw seems like a more natural choice... 89.25.184.206 (talk) 01:57, 11 April 2023 (UTC)
thread_title:  What's the point of comparing batteries with different voltage at the same current? 

message: What's the shelf life of the various types? And why do alkaline cells leak? (in my personal, but anecdotal experience, duracell usually  leak, and energizer alkaline less so; and I found one set of ever-ready zinc carbons still in perfect condition after 25 years - was ever-ready actually a claim to endurance rather than just advertising? ) 185.254.136.122 (talk) 18:51, 31 May 2023 (UTC)
replies: text: It would be interesting to have some documented discussion of shelf life, but this varies by type and vintage.  I understand that one reason batteries leak is that as the reactions occur, the products of the reaction take up more space - zinc oxide is less dense than the zinc that produced it. This increases pressure in the cell and causes it ultimately to leak. Your very old zinc-carbon cells may have dried out before they had a chance to leak - perfect outward physical condition does not assure internal resistance as slow as when manufactured. I havent't seen any published study that shows a meaningful difference in leakage between brands - the universal advice is never store anything with zinc0carbon batteries in it for a long time. --Wtshymanski (talk) 03:34, 2 June 2023 (UTC)
thread_title:  Shelf-life 

message: As you can read on the German version of this article, the AA type cell is called "mignon" on there. can we please add this name to the list of names? 2A02:8108:53C0:1690:4CC0:23A6:F159:1362 (talk) 17:53, 24 June 2023 (UTC)
replies: text: But every language has a different word for any English word? This is the English Wikipedia - we're doing well to collect English-language names for things, and leave the names in other languages to the stalwart editors of those Wikipedia versions. --Wtshymanski (talk) 23:52, 24 June 2023 (UTC)
thread_title:  German Name 

message: The inclusion of a photo of a pocket-sized "solar charger" in an encyclopedia suggests technical feasibility. But it's a cheap gimmick, and the vendor specifications are a joke, as a back-of-envelope calculation shows:
- active surface of the device ca 6 cm × 7.5 cm = 4.5·10⁻³ m², so ca 5·10⁻³ m². We see that much less (maybe half) of that surface is actually covered in solar cells, but, you know what, what's a factor of two between friends and a least-cost electronics vendor.
- standard "high" solar irradiation 1 kW/m²
- solar irradiation, best case, on the active area, 5 W.
- best-case efficiency of 2008 cells 15% = 0.15
- power output, best case, of the solar cells, thus 0.75 W
- charging efficiency NiMH including DC/DC converters is at ca 50% = 0.5
- the power available to charge batteries is hence, best case, 0.375 W
- a 1500 mAh NiMH should have ca 1.2 V · 1.5 Ah = 1.8 Wh, so charging takes:
- 4.8 h charging at optimimum conditions for a single cell, and 19.2 h charging for four cells at optimum conditions, which sadly only exist on sci-fi planets that have ginormous moons
A more realistic estimate would incorporate the actual active surface, and add another factor of two to these charging times.
Hence, I came to the conclusion that having this picture, uncommented, in the article will mislead readers to believe things about battery-powered systems and their rechargability "in the wild" that are false. I'm removing that picture, as it, on top of it all, has no real relevance to the article. MüllerMarcus (talk) 12:57, 12 October 2023 (UTC)
thread_title:  Removing the misleading picture of a "solar charger"