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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Peter Hucker wrote:
There are Lithium AAs. There are 1.5 volt lithium batteries, such as AA's. They are rare, and have extremely long shelf life, but I have never seen specs for discharge rate, etc. The only ones I have ever seen were packed with a fan powered gas mask, but I think you can get them if you shop around. Considering the shelf life of alkeline batteries sold here is less than a year, even the "name brands". It's almost a moot point. We no longer get any batteries from west of us, they all come from Korea, "China" (inside the PRC), Singapore or Hong Kong. Even the Japanese brands (Sony, Panasonic, Toshiba) are made in China, and so are the famous US brands (EverReady, DuraCell). The only one missing is Ray-O-Vac. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#2
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On Sat, 20 Dec 2008 20:19:02 -0000, Geoffrey S. Mendelson wrote:
Peter Hucker wrote: There are Lithium AAs. There are 1.5 volt lithium batteries, such as AA's. They are rare, and have extremely long shelf life, but I have never seen specs for discharge rate, etc. The only ones I have ever seen were packed with a fan powered gas mask, but I think you can get them if you shop around. http://www.farnell.co.uk Search for lithium aa There are loads of name brands. Considering the shelf life of alkeline batteries sold here is less than a year, even the "name brands". It's almost a moot point. We no longer get any batteries from west of us, they all come from Korea, "China" (inside the PRC), Singapore or Hong Kong. LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com In light of the Madrid bombing, France has raised its terror alert level from "run" to "hide." The only two higher levels in France are "surrender" and "collaborate." |
#3
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Peter Hucker wrote:
LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#4
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On Sun, 21 Dec 2008 17:09:02 -0000, Geoffrey S. Mendelson wrote:
Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. The only batteries I see leaking are Zinc Carbons, and Alkalines that were bought over 5 years ago. It seems strange you are getting such crap quality cells. I mostly get Duracell and some other lesser known brands. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com | --====|====-- | .-"""""-. .'_________'. /_/_|__|__|_\_\ ;'-._ _.-'; ,--------------------| `-. .-' |--------------------, ``""--..__ ___ ; ' ; ___ __..--""`` `"-// \\.._\ /_..// \\-"` \\_// '._ _.' \\_// `"` ``---`` `"` |
#5
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Geoffrey S. Mendelson wrote:
Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. Ron(UK) |
#6
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On Sun, 21 Dec 2008 17:20:08 -0000, Ron(UK) wrote:
Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. I've never bought any at a market, as they are cheaper in bulk from places like Rapid Electronics. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com Why do Italians hate Jehovah's Witnesses? Italians hate ALL witnesses. |
#7
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Peter Hucker wrote:
On Sun, 21 Dec 2008 17:20:08 -0000, Ron(UK) wrote: Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. I've never bought any at a market, as they are cheaper in bulk from places like Rapid Electronics. CPC are pretty good, discounted AND two boxes for the price of one. Ron |
#8
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On Sun, 21 Dec 2008 17:42:56 -0000, Ron(UK) wrote:
Peter Hucker wrote: On Sun, 21 Dec 2008 17:20:08 -0000, Ron(UK) wrote: Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. I've never bought any at a market, as they are cheaper in bulk from places like Rapid Electronics. CPC are pretty good, discounted AND two boxes for the price of one. It may have been Farnell (same company as CPC) I got them from. I use both Farnell and Rapid, whichever is cheaper. Rapid are good for NiMH. 2 packs of 10? That sounds familiar actually. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com Does a pedometer detect child molesters? |
#9
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Ron(UK) wrote:
Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. Ron(UK) They are actually AAAA cells..... jak |
#10
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jakdedert wrote:
Ron(UK) wrote: Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. Ron(UK) They are actually AAAA cells..... Same in an Energizer, the difference is that the cells in a Procell are connected by spotwelded on flat metal strips In an Energizer, pressure alone connects the cells to the top terminals and bottom conductors. That might explain why they sometimes inexplicably fail after a few minutes. Ron(UK) |
#11
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On Mon, 22 Dec 2008 11:28:24 -0000, Ron(UK) wrote:
jakdedert wrote: Ron(UK) wrote: Geoffrey S. Mendelson wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. An awful lot of the 'Duracells' you'll find in discount places, markets, etc. are chinese fakes. A genuine Procell PP3 has six cylindrical cells which look like a small AAA cell. The ripoffs I`ve seen have flat cells. You can barely tell the difference from external appearances alone - the price should be your guide. Ron(UK) They are actually AAAA cells..... Same in an Energizer, the difference is that the cells in a Procell are connected by spotwelded on flat metal strips In an Energizer, pressure alone connects the cells to the top terminals and bottom conductors. That might explain why they sometimes inexplicably fail after a few minutes. I though "Procell" was one of those cheap makes you get in Farnell? -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com ___I___ /= | #\ /.__-| __ \ |/ _\_/_ \| (( __ \__)) __ ((()))))()) __ ,' |()))))(((()|# `. / |^))()))))(^| =\ / /^v^(())()()v^\' .\ |__.'^v^v^))))))^v^v`.__| /_ ' \______(()_____( | _..-' _//_____[xxx]_____\.-| /,_#\.=-' /v^v^v^v^v^v^v^v^| _| \)|) v^v^v^v^v^v^v^v^v| _| || :v^v^v^v^v^v`.-' |# \, || v^v^v^v`_/\__,--.|\_=_/ :v^v____| \_____|_ , || v^ / \ / //\_||_)\ `/_..-._\ )_...__\ || \/ #| |_='_( | =_(_ || _/\_ | / =\ / ' =\ \\/ \/ )/ |=____#| '=....#| |
#12
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![]() "Geoffrey S. Mendelson" wrote: Peter Hucker wrote: LESS THAN A YEAR?!?!?! I have Duracells with a use by date of about 4 or 5 years in the future. So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. Are you storing them in an oven? I have used Alkaline cells that were over six years old. -- http://improve-usenet.org/index.html aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy. |
#13
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In article ,
Michael A. Terrell wrote: So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. Are you storing them in an oven? I have used Alkaline cells that were over six years old. Are those times for cells that have been stored in unused condition, or for cells that are in a device which is in occasional use? I believe that the former (shelf life when fully charged) is often a good deal better than the latter (lifetime once partially discharged). I've read that even a modest partial discharge of an alkaline cell starts an electrochemical reaction that can lead to corrosion of the case after a year or so. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#14
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In article ,
Dave Platt wrote: Are you storing them in an oven? I have used Alkaline cells that were over six years old. Are those times for cells that have been stored in unused condition, or for cells that are in a device which is in occasional use? I believe that the former (shelf life when fully charged) is often a good deal better than the latter (lifetime once partially discharged). I've read that even a modest partial discharge of an alkaline cell starts an electrochemical reaction that can lead to corrosion of the case after a year or so. I'd say you need to change your brand. -- *Two many clicks spoil the browse * Dave Plowman London SW To e-mail, change noise into sound. |
#15
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Are those times for cells that have been stored in unused condition,
or for cells that are in a device which is in occasional use? Unused, of course. Using the cell, even "occasionally", drains it. I believe that the former (shelf life when fully charged) is often a good deal better than the latter (lifetime once partially discharged). I've read that even a modest partial discharge of an alkaline cell starts an electrochemical reaction that can lead to corrosion of the case after a year or so. I've never seen this. Sounds like another myth started by someone who doesn't understand. The electrochemical reactions in batteries continue at all time, whether they are "new" or used. |
#16
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On Sun, 21 Dec 2008 21:21:10 -0800, Dave Platt wrote:
In article , Michael A. Terrell wrote: So do I. They rarely last more than a year before they leak, and some brands even less. Before they changed from some anonymous Chinese manufacturer to GPT, the Office Depot brand sold here lasted 3-4 months. Are you storing them in an oven? I have used Alkaline cells that were over six years old. Are those times for cells that have been stored in unused condition, or for cells that are in a device which is in occasional use? I believe that the former (shelf life when fully charged) is often a good deal better than the latter (lifetime once partially discharged). I've read that even a modest partial discharge of an alkaline cell starts an electrochemical reaction that can lead to corrosion of the case after a year or so. I have a Fujicam that takes AAs - I used to use NiMHs, but they turned out to be crap, so I got a couple of alkalines, which have lasted now for at least a year in intermittent duty - the camera is a real current hog, even when it's off, so I just store the cam with the battery door open. This means I have to set its clock every time I use it, but I consider that a small price to pay for the kind of reliability I'm getting. YMMV, of course. Cheers! Rich |
#17
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Michael A. Terrell wrote:
Are you storing them in an oven? I have used Alkaline cells that were over six years old. I think it has more to do with who makes the batteries and where than how they are stored. We get lots of things from Hong Kong, Singapore and mainland China. If you think the people who put melanine in powdered milk, or used lead paint on toys are the only ones who produce cheap junk and label it has high priced well known brands, you are mistaken. Here, were most UK and US brands are not officially sold, and grey market goods are perfectly legal, you never know what you are buying, even if you buy it in a well known store. I expect that it's now the same way elsewhere, except that the name brands usually are really what you think you are getting. For example, last Christmas one of the major UK retailers sold a DVD player for 10 quid. In the box was a remote and I assume batteries. How much did those batteries cost, and how many of them surfaced with "brand names" on them? Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#18
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![]() "Geoffrey S. Mendelson" wrote: Michael A. Terrell wrote: Are you storing them in an oven? I have used Alkaline cells that were over six years old. I think it has more to do with who makes the batteries and where than how they are stored. We get lots of things from Hong Kong, Singapore and mainland China. If you think the people who put melanine in powdered milk, or used lead paint on toys are the only ones who produce cheap junk and label it has high priced well known brands, you are mistaken. Here, were most UK and US brands are not officially sold, and grey market goods are perfectly legal, you never know what you are buying, even if you buy it in a well known store. I expect that it's now the same way elsewhere, except that the name brands usually are really what you think you are getting. For example, last Christmas one of the major UK retailers sold a DVD player for 10 quid. In the box was a remote and I assume batteries. How much did those batteries cost, and how many of them surfaced with "brand names" on them? I'm in the US, so quid is meaningless to me. Most remotes here seem to be shipped with crappy carbon zinc, or no name alkaline cells. Some are so bad they leak before the item is sold. Right now you can buy a DVD player for US $14 after a $5 rebate. I saw plenty of them in the 19 to 29 dollar range through the year. I buy only name brand US made cells when I can. I keep a good supply on hand for power outages, flashlights & hurricane season. I use my oldest stock between seasons, and some got quite old. They were well past the use by dates, but all were still good. -- http://improve-usenet.org/index.html aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy. |
#19
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In article ,
Michael A. Terrell wrote: I'm in the US, so quid is meaningless to me. Bit like 'buck', then, to the rest of the world. ;-) Quid is slang for 1 gbp. The way things are going 1 gbp = 1$ = 1 Euro. At least it will make foreign holiday calculations easy. Except no one can afford them. -- *All generalizations are false. Dave Plowman London SW To e-mail, change noise into sound. |
#20
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![]() ? "Michael A. Terrell" ?????? ??? ?????? m... "Geoffrey S. Mendelson" wrote: Michael A. Terrell wrote: Are you storing them in an oven? I have used Alkaline cells that were over six years old. I think it has more to do with who makes the batteries and where than how they are stored. We get lots of things from Hong Kong, Singapore and mainland China. If you think the people who put melanine in powdered milk, or used lead paint on toys are the only ones who produce cheap junk and label it has high priced well known brands, you are mistaken. Here, were most UK and US brands are not officially sold, and grey market goods are perfectly legal, you never know what you are buying, even if you buy it in a well known store. I expect that it's now the same way elsewhere, except that the name brands usually are really what you think you are getting. For example, last Christmas one of the major UK retailers sold a DVD player for 10 quid. In the box was a remote and I assume batteries. How much did those batteries cost, and how many of them surfaced with "brand names" on them? I'm in the US, so quid is meaningless to me. Most remotes here seem to be shipped with crappy carbon zinc, or no name alkaline cells. Some are so bad they leak before the item is sold. The VCR which I got in Kozani (eastern Macedonia, greece's province, not the country), a Sony, in 1995, had its remote supplied with 2 carbon zinc Sony AA cells. Well, they lasted until a couple of years ago, the VCR got another problem and I decided to throw it away to get a sony dvd player (50 euros).:-) A merry Christmas to everyone! Right now you can buy a DVD player for US $14 after a $5 rebate. I saw plenty of them in the 19 to 29 dollar range through the year. I buy only name brand US made cells when I can. I keep a good supply on hand for power outages, flashlights & hurricane season. I use my oldest stock between seasons, and some got quite old. They were well past the use by dates, but all were still good. -- Tzortzakakis Dimitrios major in electrical engineering mechanized infantry reservist hordad AT otenet DOT gr |
#21
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On Mon, 22 Dec 2008 11:33:27 +0000 (GMT), the renowned Stuart
wrote: In article , Michael A. Terrell wrote: I'm in the US, so quid is meaningless to me. Quid = Pounds, at the current exchange rate = $1.47 If you remember the 3-letter ISO currency codes, Google will do a lot of the slogwork for you, and more. For example, if I would like to know the price of gasoline (petrol) in China using the obsolete units of my youth, I need only type: 5.1 CNY per liter in CAD per imperial gallon and it responds with 5.1 (Chinese yuan per liter) = 4.08944735 Canadian dollars per Imperial gallon Or combined reciprocal and units conversion: 6.3 liters per 100km in miles per imperial gallon responds with 6.3 liters per 100km = 44.8382624 miles per Imperial gallon or 6.3 liters per 100km in miles per gallon responds with 6.3 liters per 100km = 37.3356481 miles per gallon (careful, the default "gallon" is some kind of undersized quaint wine gallon for unknown reasons). Here is the list of ISO codes (Google does not have them all available, but the major ones should be there). http://www.xe.com/iso4217.php Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com |
#22
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On Mon, 22 Dec 2008 11:33:27 -0000, Stuart wrote:
In article , Michael A. Terrell wrote: I'm in the US, so quid is meaningless to me. Quid = Pounds, at the current exchange rate = $1.47 What happened? I thought wer were approaching $2 per quid. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com What do Disney World & Viagra have in common? They both make you wait an hour for a five-minute ride. |
#23
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There are 1.5 volt lithium batteries, such as AA's. They are rare,
and have extremely long shelf life, but I have never seen specs for discharge rate, etc. Eveready sells litium 1.5V AAs. They're most-commonly available in camera stores. They have two or three times the capacity of your ordinary alkaline, I believe, particularly in high-drain applications. |
#24
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On Sun, 21 Dec 2008 18:20:41 -0000, William Sommerwerck wrote:
There are 1.5 volt lithium batteries, such as AA's. They are rare, and have extremely long shelf life, but I have never seen specs for discharge rate, etc. Eveready sells litium 1.5V AAs. They're most-commonly available in camera stores. They have two or three times the capacity of your ordinary alkaline, I believe, particularly in high-drain applications. I've heard SIX times. -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com ,-. / ( ° * _.--'! '--._ ,' ''. ° |! \ _.' O ___ ! \ (_.-^, __..-'' ''''--. ) /,' ° _.' / ° * .-'' | (..--^. ' | / ' |
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