Talk:Alkaline battery

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simple science

There is plenty of good simple science in batteries.

Chemistry: ion flow, membrane properties and tradeoffs, redox potential
Physics: energy density, capacity dependancies, internal resistance,
History: lineage

Compare and contrast with Zinc carbon battery - article needed for this, and with Lithium battery too.

Bear in mind http://en.wikipedia.org/wiki/Battery_%28electricity%29

Chemistry

The definition of anode / cathode may be confusing. Refer to http://en.wikipedia.org/wiki/Anode#Battery_or_galvanic_cell_anode for further discussion on this topic. —Preceding unsigned comment added by 134.134.136.2 (talk) 18:05, 16 May 2008 (UTC)[reply]

Voltage

Added "approximately" to voltage. An alkaline cell produces 1.58 volts. I'll have to look up carbon-zinc, don't know it off the top of my head. Rsduhamel 07:16, 28 Dec 2004 (UTC)

temperature limitations?

What are the temperature limitations on alkaline batteries? What happens when you exceed them? - Brewthatistrue 22:09, 23 Jun 2005 (UTC)

Goes boom and expells murcury gas...read the article...Kr5t 22:48, 21 May 2006 (UTC)[reply]

Where does it say anything about mercury gas? --Newton21989 01:55, 4 April 2007 (UTC)[reply]

Scroll down. --User:HaxOr｜HaxOr <% =now %> —Preceding unsigned comment added by 75.162.44.48 (talk) 02:15, 25 April 2008 (UTC)[reply]

Usage

Alkaline batteries are preferred for voltage sensitive electronic devices. The output voltage does not drop until totally drained of useful energy. Carbon-Zinc cell output voltage will consistently drop as energy is used which will result in erratic low voltage operation of electronic equipment, hence the alkaline requirement on most electronic equipment.

Environmentalism

What is the impact of modern alkaline batteries on the environment? The fact that there is no longer mercury added to them helps, being a heavy metal, but are there any other traces of heavy metals in alkaline batteries?

There still is mercury...Kr5t 22:48, 21 May 2006 (UTC).[reply]

However at the site: www. duracell.com it reads that they have not had mercury in their batteries since they voluntarily discontinued producing them with it in 1993. —The preceding unsigned comment was added by 67.142.130.40 (talk • contribs). 18 nov 2006

I'm not very familiar with battery recycling, but it seems that this would be something good to add. Maybe some guidelines on proper battery disposal too. Update: I added a link on battery recycling which I thought was informative. —The preceding unsigned comment was added by 71.117.254.131 (talk • contribs). 4 Aug 2006

Can anyone put these compunds into english please?

Self recharging

After letting used batteries sit for a while they seem to partially recharge (although it doesn't last long). How does this happen? What are the results, etc? Is it dangerous to use a battery up like this? Thanks --32.97.110.142 17:18, 7 March 2007 (UTC)[reply]

The battery doesn't really recharge. Here's an explanation for this curious effect. I just noticed this as well when using a (cheap) alkaline battery in a 1xAAA high drain flashlight. NiMH batteries don't sag as quickly, and they do not noticeably recover either. Aragorn2 (talk) 12:31, 15 April 2009 (UTC)[reply]

White crystals

Sometimes alkaline batteries leak, a clear fluid. But sometimes white crystal powder forms at one end. It seems to corrode contacts. What exactly is this white material, what exactly causes it, how can it be avoided, and what contact materials are most resistant to corrosion? -69.87.193.60 17:27, 22 March 2007 (UTC)[reply]

I've had this happen many times while recharging alkaline batteries. This is potassium hydroxide and in my experience, has not seemed to cause any damage to myself or objects it comes in contact with. My advice, to be safe, is just wipe it up with a paper towel, or likewise and throw the battery (It's no good after it pops.) and the towel into a trash container.

Recycling

Information is needed about recycling and disposal practices for alkaline batteries, in various countries around the world. -69.87.193.60 17:27, 22 March 2007 (UTC)[reply]

Capacity and Current

There seems to be a contradiction between the Capacity section saying that loads of 1000mA can reduce the energy content due to internal heating and the Current section saying that a AA battery can deliver 1000 mA without significant internal heating. Am I missing something? --Nathan24601 (talk) 20:50, 24 February 2008 (UTC)[reply]

History

When were ordinary AA/AAA/C/D batteries first commonly sold? -69.87.203.130 (talk) 00:43, 18 June 2008 (UTC)[reply]

Rechargeable Alkaline Batteries

I noticed there is not a separate article on these, only an article on recharging standard disposable alkaline batteries. In what ways are rechargeable alkaline batteries different than disposable alkaline batteries? Obviously, other than the ability to recharge. Is the difference in the battery, or in the charger, or in both? When Rayovac released the Renewal line of rechargeable alkaline batteries in 1993 I had a suspicion they had simply created a "smart" charger that could safely recharge any alkaline battery and that the batteries themselves were nothing more than overpriced relabeled versions of their disposable line since they were packaged fully charged. I could be completely wrong on this since I was only 12 at the time and also thought connecting two 9-volt batteries together made a convenient hand warmer. I was a very lucky kid who had great success in recharging my used disposable alkaline batteries in my Ni-Cad charger. By success I mean I never hurt myself or my Game Boy, not that the recharged battery ever lasted very long.

By the way, this is my very first post in Wikipedia so I apologize if I have done so incorrectly. Rlsaine (talk) 18:40, 3 July 2008 (UTC)[reply]

There is now a separate article, see Rechargeable alkaline battery. Biscuittin (talk) 18:55, 13 October 2009 (UTC)[reply]

Pronounciation

There seems to be a dispute on whether "A" or "An" should be used with AA batteries. The Wikipedia article on AA battery gives Double A as the only pronounciation, altough I've certainly heard it pronounced as just A A as well. However, since the relevant article give the pronounciation double A and uses "A AA", weird as it seems, I think we should use the same style for consistency. Thoughts? — Twinzor ^{Say hi!} 18:47, 30 January 2009 (UTC)[reply]

Leaking ... why does it leak out? Internal cell pressure?

Generally most batteries are sealed or have one-way gas vents, so it is unclear to me how the acid manages to leak out without there being another hole somewhere else for air to enter, in place of the leaking fluid. Most batteries are in plastic cases so I don't see how absorption out of the battery could be occurring.

What causes the fluid to seep out?

DMahalko (talk) 02:58, 5 April 2009 (UTC)[reply]

Alkali, not acid. The "Handbook of Batteries" says that zinc in the battery will dissociate water and make hydrogen gas, also that the products of the reactions change in density. Either one of these would increase pressure inside a cell and make it bulge and leak. Simple gravity probably accounts for the rest once a hole gets rusted through the sheet metal jacket of the cell. --Wtshymanski (talk) 17:12, 5 April 2009 (UTC)[reply]

built-in testers

Does anyone else remember these from the 90s? A little strip on the side that would glow when a button was pressed to indicate the remaining capacity. Definitely a drain on the cell as they would get hot. If anyone can come up with a source I think it would be a nice addition to the article. Btyner (talk) 14:09, 22 August 2009 (UTC)[reply]

Battery names

This is not a re-naming proposal but a suggestion that more explanation is needed. The term "alkaline battery" in everyday use means a primary cell of the zinc/manganese/alkali type. However, secondary cells of the nickel/iron/alkali and nickel/cadmium/alkali types are also alkaline batteries. Can we make this clear without generating confusion? Biscuittin (talk) 19:09, 13 October 2009 (UTC)[reply]

If anyone routinely called anything other than a zinc/manganese dioxide/ potassium hydroxide system an "alkaline battery", maybe there would be a reason to provide more explanation. Theoretically confusing, in practice, everyone knows which is which. --Wtshymanski (talk) 04:02, 29 November 2009 (UTC)[reply]

Unified layout

On other articles about battery tech (like: Lithium-ion_battery and Zinc_air). There is a table about properties like energy/weight energy/size, etc. After searching through this article I was unable to find those values. If someone (including me of course) finds a good source, please add :) Dorit82 (talk) 03:41, 29 November 2009 (UTC)[reply]

Move

The following is a closed discussion of the proposal. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section.

The result of the proposal was consensus against move

Alkaline battery → Alkaline electrochemical cell — The electrochemical battery is simply a pair of electrochemical cells. this article deals around how this type of cell works. —Preceding unsigned comment added by 81.245.90.148 (talk • contribs) 11:58, 9 October 2009

Oppose. Just wrong. This is one of several *highly dubious* renamings proposed by this IP address. There's no need to give encyclopedia articles obscure names when the common name is accurate and sufficient. --Wtshymanski (talk) 14:33, 9 October 2009 (UTC)[reply]
Oppose, this is at the common name and should remain. ~~ GB fan ~~ ^talk 15:19, 9 October 2009 (UTC)[reply]
Strong Oppose and suggest speedy close (is that possible?). This is not what the general public would be looking for. HumphreyW (talk) 15:25, 9 October 2009 (UTC)[reply]
Oppose WP:COMMONNAME 76.66.197.30 (talk) 16:12, 9 October 2009 (UTC)[reply]
Oppose The term "battery" is almost always used by consumers, battery manufacturers, etc. TJ Spyke 17:29, 9 October 2009 (UTC)[reply]

Move discussion in process

There is a move discussion in progress on Talk:Lead-acid battery which affects this page. Please participate on that page and not in this talk page section. Thank you. —RFC bot 00:00, 11 October 2009 (UTC)[reply]

The above discussion is preserved as an archive of the proposal. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.

Anode and cathode

Quoting the battery handbook for reference:

Powdered
zinc is used for the anode to provide a large surface area for high-rate capability (that is, to reduce current density) and to distribute solid and liquid phases more homogeneously (to minimize mass-transport polarization of reactant and product). On discharge, the manganese dioxide cathode undergoes at first a one-electron reduction
to the oxyhydroxide...

(David Linden, Thomas B. Reddy (ed). Handbook Of Batteries 3rd Edition. McGraw-Hill, New York, 2002 ISBN 0-07-135978-8 Chapter 10, page 10.3-10.4 )

because I sometimes don't have it handy when I need to revert the vandals. --Wtshymanski (talk) 22:49, 9 December 2009 (UTC)[reply]

leaking

Hi, when the pottasium hydroxide is leaking out it is not forming crystals. It is reacting with CO2 from air and forms Potassium carbonate (: 2KOH + CO₂ → K₂CO₃ + H₂O ). It is also corrosive and the reaction takes some time so the pottasium hydroxide is destroying surroundings as well.

I'm not so much advanced in english so i don't want to edit directly.