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It says here E=CV, though I doubt this is the case. C is commonly used for capaciTANCE (a different yet extremely common parameter in electricity) while Q is used for charge. While it's possible in the same circles where mAh are used, (rather than Coulombs) C is used for capacity, I doubt this. - Oreo Priest (( talk)) at 02:05, 9 June 2006
Variables should not have an associated unit of measurement. Those equations should be correct *despite* ones use of units (as long as the units are properly tracked). Fresheneesz 02:11, 12 August 2006 (UTC)
All the stuff about batteries should be moved to the battery (electricity) article. Articles about a unit of measure should not be dominated by one use of that unit. -- Wtshymanski 22:34, 17 November 2006 (UTC)
Ummm... I was just about to add all that stuff, not realizing you deleted it. You didn't even include a link? — Omegatron 02:49, 14 September 2007 (UTC)
[...] a CD player draws a constant current of 200mA from two rechargeable AA batteries that have a capacity of 2300mAh each. So, 2.300Ah / 0.200A = approximately 11.5 Hours of battery life.
I am not well versed on electricity, but if we are talking about 2 batteries with a capacity of 2300mAh each, wouldn't that bring the total amount of capacity to 4600mAh? The CD Player on that example would then last 23 hours... --CronoT 15:31, 20 December 2006 (UTC)
Which is the SI metric equivalent ?. -- Nopetro 21:48, 21 May 2007 (UTC)
17-Oct-2008: I have added subheaders above as "Topics from 2006" (etc.) to emphasize the dates of topics in the talk-page. Older topics might still apply, but using the year headers helps to focus on more current issues as well. Afterward, I retro-dated/named the unsigned comments. - Wikid77 ( talk) 15:12, 17 October 2008 (UTC)
17-Oct-2008: Beyond title " Ampere-hour" the following terms also link to the article as redirection titles:
There might be other associated titles as well; however, they should only be defined as redirection-titles in Wikipedia if commonly used. Otherwise, users can run a wiki-search for any term to find any related wiki articles which contain/define that term. There is no need to define a wiki-name for every term which could be found by searching. - Wikid77 ( talk) 15:12, 17 October 2008 (UTC)
it helped me sooo much in my schoolwork, i know i forgot 2 log on but who cares, andyway, thank the editors who did all the nerdy scientific contributions!!! you saved my life and it's certainly better than my science teacher's boring lessons 78.105.31.170 ( talk) 17:35, 23 October 2008 (UTC)
[ah] is an abrevyasion for ampere hour witch is E=QV witch i have no idia what it is! when you tern on the lights the light bulb can get up to 2,200 degrease c. also when a light bulb lights up the fliliments in the adums start vibrating and they heat up during that proses. —Preceding unsigned comment added by 65.117.213.17 ( talk) 01:01, 28 February 2009 (UTC)
Twinkle twinkle little star, power equals .... My concept of a battery is something that stores energy, not electrons. How is mAh a useful measure of a battery? I suppose I can multiply by the voltage (assuming a constant voltage) and get that a 1,000 mAh battery at 1.5 V is 5400 joules or 1.3 kcal... But (a) that sounds like too much energy (over a half a day's food in one AAA battery!?) and (b) Why don't battery manufacturers talk in units of energy? Or is there something about the chemistry of batteries that makes this more meaningful (like rocket engineers using specific impulse)? —Ben FrantzDale ( talk) 01:20, 8 October 2009 (UTC)
a) You don't eat 2.6kcal a day, do you? b) Rechargeable batteries at least, talk in mAh. —Preceding unsigned comment added by DarknessEcko ( talk • contribs) 20:25, 7 June 2010 (UTC)
If you type mAh on the address bar you get to MAh, which gets you to Ampere-hour.
What i'd like to address is that lowercase makes a real big difference in electricity, and so the redirect should not actually happen. —Preceding unsigned comment added by DarknessEcko ( talk • contribs) 20:21, 7 June 2010 (UTC)
Is there any relation with kW or kWh?. -- Nudecline ( talk) 12:09, 24 June 2010 (UTC)
useless........ there is no information here. Its far better to have way too much information even if its not 100% relevant than it is to have a 2 paragraph article that explains just about NOTHING!! add more information! — Preceding unsigned comment added by Gawdsmak ( talk • contribs) 04:21, 11 November 2013 (UTC)
Please solve my problem Rony2543 ( talk) 21:17, 24 December 2015 (UTC)
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There is a rule in ISO/IEC 80000-1:2009 "Quantities and units -- Part 1: General":
7.2.4 English names of compound units
In the English language, the name of the product of two units is the concatenation of the two names, separated by a space.
EXAMPLE 1 newton metre
Therefore, I argue to remove the hyphen and use "ampere hour" instead. -- Gunnar ( talk) 13:13, 2 November 2016 (UTC)
"When the name of a derived unit is formed from the names of individual units by juxtaposition, either a space or a hyphen is used to separate the names of the individual units."
"Indicate a product of unit names with either a hyphen or a space."
"The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and incorrectly, the capacity of electrical batteries." - Why is it incorrect to use Ah for electrical batteries? It should be clear that not the energy capacity is meant, but an electrochemical cell like a battery is full if the material inside is 'saturized' with enough electrons. -- Gunnar ( talk) 13:32, 2 November 2016 (UTC)
This
level-5 vital article is rated Stub-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||
|
It says here E=CV, though I doubt this is the case. C is commonly used for capaciTANCE (a different yet extremely common parameter in electricity) while Q is used for charge. While it's possible in the same circles where mAh are used, (rather than Coulombs) C is used for capacity, I doubt this. - Oreo Priest (( talk)) at 02:05, 9 June 2006
Variables should not have an associated unit of measurement. Those equations should be correct *despite* ones use of units (as long as the units are properly tracked). Fresheneesz 02:11, 12 August 2006 (UTC)
All the stuff about batteries should be moved to the battery (electricity) article. Articles about a unit of measure should not be dominated by one use of that unit. -- Wtshymanski 22:34, 17 November 2006 (UTC)
Ummm... I was just about to add all that stuff, not realizing you deleted it. You didn't even include a link? — Omegatron 02:49, 14 September 2007 (UTC)
[...] a CD player draws a constant current of 200mA from two rechargeable AA batteries that have a capacity of 2300mAh each. So, 2.300Ah / 0.200A = approximately 11.5 Hours of battery life.
I am not well versed on electricity, but if we are talking about 2 batteries with a capacity of 2300mAh each, wouldn't that bring the total amount of capacity to 4600mAh? The CD Player on that example would then last 23 hours... --CronoT 15:31, 20 December 2006 (UTC)
Which is the SI metric equivalent ?. -- Nopetro 21:48, 21 May 2007 (UTC)
17-Oct-2008: I have added subheaders above as "Topics from 2006" (etc.) to emphasize the dates of topics in the talk-page. Older topics might still apply, but using the year headers helps to focus on more current issues as well. Afterward, I retro-dated/named the unsigned comments. - Wikid77 ( talk) 15:12, 17 October 2008 (UTC)
17-Oct-2008: Beyond title " Ampere-hour" the following terms also link to the article as redirection titles:
There might be other associated titles as well; however, they should only be defined as redirection-titles in Wikipedia if commonly used. Otherwise, users can run a wiki-search for any term to find any related wiki articles which contain/define that term. There is no need to define a wiki-name for every term which could be found by searching. - Wikid77 ( talk) 15:12, 17 October 2008 (UTC)
it helped me sooo much in my schoolwork, i know i forgot 2 log on but who cares, andyway, thank the editors who did all the nerdy scientific contributions!!! you saved my life and it's certainly better than my science teacher's boring lessons 78.105.31.170 ( talk) 17:35, 23 October 2008 (UTC)
[ah] is an abrevyasion for ampere hour witch is E=QV witch i have no idia what it is! when you tern on the lights the light bulb can get up to 2,200 degrease c. also when a light bulb lights up the fliliments in the adums start vibrating and they heat up during that proses. —Preceding unsigned comment added by 65.117.213.17 ( talk) 01:01, 28 February 2009 (UTC)
Twinkle twinkle little star, power equals .... My concept of a battery is something that stores energy, not electrons. How is mAh a useful measure of a battery? I suppose I can multiply by the voltage (assuming a constant voltage) and get that a 1,000 mAh battery at 1.5 V is 5400 joules or 1.3 kcal... But (a) that sounds like too much energy (over a half a day's food in one AAA battery!?) and (b) Why don't battery manufacturers talk in units of energy? Or is there something about the chemistry of batteries that makes this more meaningful (like rocket engineers using specific impulse)? —Ben FrantzDale ( talk) 01:20, 8 October 2009 (UTC)
a) You don't eat 2.6kcal a day, do you? b) Rechargeable batteries at least, talk in mAh. —Preceding unsigned comment added by DarknessEcko ( talk • contribs) 20:25, 7 June 2010 (UTC)
If you type mAh on the address bar you get to MAh, which gets you to Ampere-hour.
What i'd like to address is that lowercase makes a real big difference in electricity, and so the redirect should not actually happen. —Preceding unsigned comment added by DarknessEcko ( talk • contribs) 20:21, 7 June 2010 (UTC)
Is there any relation with kW or kWh?. -- Nudecline ( talk) 12:09, 24 June 2010 (UTC)
useless........ there is no information here. Its far better to have way too much information even if its not 100% relevant than it is to have a 2 paragraph article that explains just about NOTHING!! add more information! — Preceding unsigned comment added by Gawdsmak ( talk • contribs) 04:21, 11 November 2013 (UTC)
Please solve my problem Rony2543 ( talk) 21:17, 24 December 2015 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Ampere-hour. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 23:33, 11 October 2016 (UTC)
There is a rule in ISO/IEC 80000-1:2009 "Quantities and units -- Part 1: General":
7.2.4 English names of compound units
In the English language, the name of the product of two units is the concatenation of the two names, separated by a space.
EXAMPLE 1 newton metre
Therefore, I argue to remove the hyphen and use "ampere hour" instead. -- Gunnar ( talk) 13:13, 2 November 2016 (UTC)
"When the name of a derived unit is formed from the names of individual units by juxtaposition, either a space or a hyphen is used to separate the names of the individual units."
"Indicate a product of unit names with either a hyphen or a space."
"The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and incorrectly, the capacity of electrical batteries." - Why is it incorrect to use Ah for electrical batteries? It should be clear that not the energy capacity is meant, but an electrochemical cell like a battery is full if the material inside is 'saturized' with enough electrons. -- Gunnar ( talk) 13:32, 2 November 2016 (UTC)