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Energizer 2013 AA Cell already leaking
Happened to try a seldom-used tv remote control last night, dead.
opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. |
Energizer 2013 AA Cell already leaking
wrote in message ... Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. A few days ago a relative asked me to find a rear bicyle lamp for them, the only one I could find contained a pair of Energiser AA marked "best before 2008" - apart from being dead flat there was no sign of deterioration. |
Energizer 2013 AA Cell already leaking
Ian Field wrote:
A few days ago a relative asked me to find a rear bicyle lamp for them, the only one I could find contained a pair of Energiser AA marked "best before 2008" - apart from being dead flat there was no sign of deterioration. It depends upon where the batteries are made. From what I see, the ones made in the EU (Belgium to be exact) are fine, the ones made in Singapore are not. I don't know what are sold in the US. My guess is that some places sell ones made in the US, and some places sell ones made in Singapore. It also would not surprise me if there are ones made in Hong Kong, or mainland China, which are fakes sold at flea markets, etc. Geoff. -- Geoffrey S. Mendelson, N3OWJ/4X1GM My high blood pressure medicine reduces my midichlorian count. :-( |
Energizer 2013 AA Cell already leaking
On Sun, 1 Jan 2012 08:53:32 -0800 (PST), "
wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. That's a standard magnesium dioxide and zinc alkaline battery. Rated shelf life is 7 years, so it should have lasted. Weird. How it failed: http://www.madsci.org/posts/archives/2002-01/1011285710.Eg.r.html Some marginal drivel with some interesting stuff mixed in: http://www.candlepowerforums.com/vb/showthread.php?171520-Leaking-alkaline-batteries Energizer alkaline batteries: http://data.energizer.com/PDFs/alkaline_appman.pdf I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Humor me and insert an amps guesser in series with the batteries on the remote. Does it draw any current in standby? Any chance that someone put something on top of the remote and pressed one of the buttons for an extended period? Measure the current the remote draws when you punch a button and estimate the battery life (2A-hr) assuming continuous accidental operation. Another anecdote for the collection. My palatial office building includes a maintenance closet, where we store several emergency flashlights. It's a random assortment of alkaline D cells in mostly plastic flashlights with incandescent bulbs. The batteries will first swell and then leak after about a year, even if not used. It doesn't seem to matter what brand of battery, they always leak. This has been going on for about 20 years. My guess(tm) is that one of the volatile cleaning chemicals stored in the closet is attacking the batteries. We put all but one flashlight inside zip loc bags to see if that helps. Too soon to tell as it's only been about 3 months. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Has anyone been using spray cleaner on the remote or nearby? That's my guess(tm) as to the culprit. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Just thought I would post it here as a reminder not to assume anything about battery life. There should be a warranty on the batteries. http://www.energizerbatteries.com/WarrantyInformation.pdf Ugh... 1 year. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Energizer 2013 AA Cell already leaking
Jeff Liebermann wrote:
I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Unless they are flashlights and you need to turn them on to see them, then why not just wrap the batteries in ziplock bags? Or if you have a vacuum sealing machine, one of their bags? When I was traveling, I had a suitcase packed and in it a kit with various things I would want, such as an electric kettle, a small portable radio, a flashlight (so that I was not stuck in the dark in a strange place because I did not know where the light switch was) and so on. I was careful to choose devices that used the same batteries, and keep them in a ziplock bag. In order to not have to go searching for them, I kept the devices and the bag of batteries all in one larger ziplock bag. At one time I had a cellphone that used AA cells but that was a long time ago. I don't think you can get one now. About six months ago I replaced the D cells in my backup AM/FM home radio (a GE SRIII) with AA cells in adaptors. Last week I took them out. They did not leak, but one of them was was swollen enough I had to push it out. Geoff. -- Geoffrey S. Mendelson, N3OWJ/4X1GM My high blood pressure medicine reduces my midichlorian count. :-( |
Energizer 2013 AA Cell already leaking
On Jan 1, 11:50*am, John Robertson wrote:
wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. *I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. Before you blame the batteries check that no current is being drawn in the rest state of the device. If the remote was drawing power (say 10 - 100ma) when just sitting around then you would get that result - leaky batteries no matter what make. John :-#)# -- * * (Please post followups or tech enquiries to the newsgroup) * John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 * Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) * * * * * * * * * * *www.flippers.com * * * *"Old pinballers never die, they just flip out."- Hide quoted text - - Show quoted text - Good pont about the idle/leakage current. I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. |
Energizer 2013 AA Cell already leaking
On Jan 1, 12:23*pm, Jeff Liebermann wrote:
On Sun, 1 Jan 2012 08:53:32 -0800 (PST), " wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. That's a standard magnesium dioxide and zinc alkaline battery. *Rated shelf life is 7 years, so it should have lasted. *Weird. How it failed: http://www.madsci.org/posts/archives/2002-01/1011285710.Eg.r.html Some marginal drivel with some interesting stuff mixed in: http://www.candlepowerforums.com/vb/showthread.php?171520-Leaking-alk... Energizer alkaline batteries: http://data.energizer.com/PDFs/alkaline_appman.pdf I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Humor me and insert an amps guesser in series with the batteries on the remote. *Does it draw any current in standby? *Any chance that someone put something on top of the remote and pressed one of the buttons for an extended period? *Measure the current the remote draws when you punch a button and estimate the battery life (2A-hr) assuming continuous accidental operation. Another anecdote for the collection. *My palatial office building includes a maintenance closet, where we store several emergency flashlights. *It's a random assortment of alkaline D cells in mostly plastic flashlights with incandescent bulbs. *The batteries will first swell and then leak after about a year, even if not used. *It doesn't seem to matter what brand of battery, they always leak. *This has been going on for about 20 years. *My guess(tm) is that one of the volatile cleaning chemicals stored in the closet is attacking the batteries. We put all but one flashlight inside zip loc bags to see if that helps. Too soon to tell as it's only been about 3 months. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Has anyone been using spray cleaner on the remote or nearby? *That's my guess(tm) as to the culprit. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). *The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. *Oops. *My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). *The plan is to localize the damage, not prevent it. *Maybe seal the battery compartment. Just thought I would post it here as a reminder not to assume anything about battery life. There should be a warranty on the batteries. http://www.energizerbatteries.com/WarrantyInformation.pdf Ugh... *1 year. -- Jeff Liebermann * * 150 Felker St #D * *http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann * * AE6KS * *831-336-2558 See my reply to John, I wish I had seen some leakage (current that is, not chemical). |
Energizer 2013 AA Cell already leaking
"Geoffrey S. Mendelson" wrote in
: Jeff Liebermann wrote: I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Unless they are flashlights and you need to turn them on to see them, then why not just wrap the batteries in ziplock bags? Or if you have a vacuum sealing machine, one of their bags? When I was traveling, I had a suitcase packed and in it a kit with various things I would want, such as an electric kettle, a small portable radio, a flashlight (so that I was not stuck in the dark in a strange place because I did not know where the light switch was) and so on. I was careful to choose devices that used the same batteries, and keep them in a ziplock bag. In order to not have to go searching for them, I kept the devices and the bag of batteries all in one larger ziplock bag. At one time I had a cellphone that used AA cells but that was a long time ago. I don't think you can get one now. About six months ago I replaced the D cells in my backup AM/FM home radio (a GE SRIII) with AA cells in adaptors. Last week I took them out. They did not leak, but one of them was was swollen enough I had to push it out. Geoff. I wonder if a protective GREASE would keep the electrolyte from harming the contacts,which seems to be what takes the most damage from leakage. Maybe a thin coat of Vaseline or other grease would work. it might even neutralize the electrolyte. -- Jim Yanik jyanik at localnet dot com |
Energizer 2013 AA Cell already leaking
"Jim Yanik" wrote in message 4... "Geoffrey S. Mendelson" wrote in : Jeff Liebermann wrote: I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Unless they are flashlights and you need to turn them on to see them, then why not just wrap the batteries in ziplock bags? Or if you have a vacuum sealing machine, one of their bags? When I was traveling, I had a suitcase packed and in it a kit with various things I would want, such as an electric kettle, a small portable radio, a flashlight (so that I was not stuck in the dark in a strange place because I did not know where the light switch was) and so on. I was careful to choose devices that used the same batteries, and keep them in a ziplock bag. In order to not have to go searching for them, I kept the devices and the bag of batteries all in one larger ziplock bag. At one time I had a cellphone that used AA cells but that was a long time ago. I don't think you can get one now. About six months ago I replaced the D cells in my backup AM/FM home radio (a GE SRIII) with AA cells in adaptors. Last week I took them out. They did not leak, but one of them was was swollen enough I had to push it out. Geoff. I wonder if a protective GREASE would keep the electrolyte from harming the contacts,which seems to be what takes the most damage from leakage. Silicone spray helps a bit. |
Energizer 2013 AA Cell already leaking
On Sun, 1 Jan 2012 18:44:04 +0000 (UTC), "Geoffrey S. Mendelson"
wrote: Jeff Liebermann wrote: I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Unless they are flashlights and you need to turn them on to see them, then why not just wrap the batteries in ziplock bags? Or if you have a vacuum sealing machine, one of their bags? Good question with a complicated answer. The short version is that we need at least 5 functional flashlights in the maintenance closet, which is also crammed full of various emergency supplies. I've been trying to get the cleaning supplies out of this closet for maybe 10 years, without success. Leaving the batteries outside the flashlights is possible. However, I suspect it would be difficult to find the batteries and flashlight in the dark, without at least one functional flashlight. Last time we had a drill, some people walked off with flashlights but no batteries. They didn't realize that they didn't function until much later. There are also some scanners, a WX radio, gas detectors, etc in the closet. All have batteries that eventually leak. Every summer, I get to remove everything, check for leakage (and theft), and provide the necessary repairs. We rotate the batteries every 2 years, but I haven't bothered to test the ones I remove. When I was traveling, I had a suitcase packed and in it a kit with various things I would want, such as an electric kettle, a small portable radio, a flashlight (so that I was not stuck in the dark in a strange place because I did not know where the light switch was) and so on. I carry a key chain LED light, an LED mini Maglight, and a Ray-o-Vac head light. Actually, I have several head lights, one attached to my hard hat, and another at my workbench. The headlight is much more useful since it points to where I'm looking, and leaves both hands free to work. I also have a hand crank no-battery flashlight, but that's to keep the kids occupied. I was careful to choose devices that used the same batteries, and keep them in a ziplock bag. In order to not have to go searching for them, I kept the devices and the bag of batteries all in one larger ziplock bag. Good idea, but not very practical for my setup. I just carry lots of spare batteries. When we had the earthquake here in 1989, FEMA was passing out tons of D cell batteries for flashlights, and nothing else. You couldn't find a AA battery for about 2 weeks. Lesson learned is to stock everything. At one time I had a cellphone that used AA cells but that was a long time ago. I don't think you can get one now. Yeah, I had a Rotomola flip phone with a AA alkaline battery pack. It worked, and was about right for the time. These days, everything is 3.7V Li-Ion. The trick is to carry a DC charger, and find a source of 12V to charge the battery. During a recent week long power outage in this area, I had several spare batteries and was recharging them in the car as I drove. I also have a hand crank charger, but again, that's to keep the kids busy. I have a similar system for the laptop. If I have time, I may even rewire the bicycle trainer into a generator suitable for operating the TV or charging the laptop. About six months ago I replaced the D cells in my backup AM/FM home radio (a GE SRIII) with AA cells in adaptors. Last week I took them out. They did not leak, but one of them was was swollen enough I had to push it out. Ouch. They bulge first, then leak. Here's the chemistry: http://www.madsci.org/posts/archives/2002-01/1011285710.Eg.r.html -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Energizer 2013 AA Cell already leaking
On Sun, 1 Jan 2012 10:51:36 -0800 (PST), "
wrote: Good pont about the idle/leakage current. I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. Well, if your remote uses 2 batteries, you would have a total of 4000 ma-hr of capacity. At a 25ma draw, that's 4000 / 25 = 160 hrs = 6.67 days if someone sat on a remote button. Could I trouble you to double check the standby current, possibly with a more sensitive amps guesser? To drain the 4000 ma-hr batteries in 2 years (17,520 hrs), you only need: 4000 / 17520 = 228 ua of leakage. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Energizer 2013 AA Cell already leaking
On Jan 1, 4:28*pm, Jeff Liebermann wrote:
On Sun, 1 Jan 2012 10:51:36 -0800 (PST), " wrote: Good pont about the idle/leakage current. *I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. Well, if your remote uses 2 batteries, you would have a total of 4000 ma-hr of capacity. *At a 25ma draw, that's * *4000 / 25 = 160 hrs = 6.67 days if someone sat on a remote button. Could I trouble you to double check the standby current, possibly with a more sensitive amps guesser? *To drain the 4000 ma-hr batteries in 2 years (17,520 hrs), you only need: * *4000 / 17520 = 228 ua of leakage. -- Jeff Liebermann * * 150 Felker St #D * *http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann * * AE6KS * *831-336-2558 Yeah, I did double check it, two separate measurements a couple of minutes apart andredid thechecking wiring to make sure it was going thru the remote, hence the pushbutton current draw and the idle. The other battery of the two AA Energizers in the remote still functioned. Just luck of the draw I guess. Today is the day to check up on all the things that I am too busy to do the rest of the year. Hard to believe I've been retired from Bell Labs fo exactly 10.5 years and still so busy doing things that I have to schedule a day to do catch up on things I would rahter not do at all. |
Energizer 2013 AA Cell already leaking
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Energizer 2013 AA Cell already leaking
On Jan 1, 5:04*pm, " wrote:
On Jan 1, 4:28*pm, Jeff Liebermann wrote: On Sun, 1 Jan 2012 10:51:36 -0800 (PST), " wrote: Good pont about the idle/leakage current. *I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. Well, if your remote uses 2 batteries, you would have a total of 4000 ma-hr of capacity. *At a 25ma draw, that's * *4000 / 25 = 160 hrs = 6.67 days if someone sat on a remote button. Could I trouble you to double check the standby current, possibly with a more sensitive amps guesser? *To drain the 4000 ma-hr batteries in 2 years (17,520 hrs), you only need: * *4000 / 17520 = 228 ua of leakage. -- Jeff Liebermann * * 150 Felker St #D * *http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann * * AE6KS * *831-336-2558 Yeah, I did double check it, two separate measurements a couple of minutes apart andredid thechecking wiring to make sure it was going thru the remote, hence the pushbutton current draw and the idle. *The other battery of the two AA Energizers in the remote still functioned. *Just luck of the draw I guess. *Today is the day to check up on all the things that I am too busy to do the rest of the year. Hard to believe I've been retired from Bell Labs fo exactly 10.5 years and still so busy doing things that I have to schedule a day to do catch up on things I would rahter not do at all.- Hide quoted text - - Show quoted text - The remote was sitting on the back of the tv table with the keyboard up. The leakage was on the negative spring and on the removable trapdoor so I wiped the spring and washed the trapdoor off, everything works fine. It would not be worth the trouble to ship it to Energizer to try to get a replacement reote. I will call them to let them know what happened tomorrow when most everybody is back to work and see if they will send me free coupons. I'll report back here what happens. |
Energizer 2013 AA Cell already leaking
wrote:
On Jan 1, 12:23 pm, Jeff Liebermann wrote: On Sun, 1 Jan 2012 08:53:32 -0800 (PST), " wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. That's a standard magnesium dioxide and zinc alkaline battery. Rated shelf life is 7 years, so it should have lasted. Weird. How it failed: http://www.madsci.org/posts/archives/2002-01/1011285710.Eg.r.html Some marginal drivel with some interesting stuff mixed in: http://www.candlepowerforums.com/vb/showthread.php?171520-Leaking-alk... Energizer alkaline batteries: http://data.energizer.com/PDFs/alkaline_appman.pdf I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Humor me and insert an amps guesser in series with the batteries on the remote. Does it draw any current in standby? Any chance that someone put something on top of the remote and pressed one of the buttons for an extended period? Measure the current the remote draws when you punch a button and estimate the battery life (2A-hr) assuming continuous accidental operation. Another anecdote for the collection. My palatial office building includes a maintenance closet, where we store several emergency flashlights. It's a random assortment of alkaline D cells in mostly plastic flashlights with incandescent bulbs. The batteries will first swell and then leak after about a year, even if not used. It doesn't seem to matter what brand of battery, they always leak. This has been going on for about 20 years. My guess(tm) is that one of the volatile cleaning chemicals stored in the closet is attacking the batteries. We put all but one flashlight inside zip loc bags to see if that helps. Too soon to tell as it's only been about 3 months. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Has anyone been using spray cleaner on the remote or nearby? That's my guess(tm) as to the culprit. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. I had the not so bright idea of wrapping my batteries in cellophane wrap when installed in devices that I care about (Geiger counters, instruments, test equipment, emergency radios, GPS, etc). The problem was that the batteries usually leak from the end terminal area, which cannot be covered with cellophane wrap. Oops. My next attempt will probably be to add a sponge at both ends of the battery (with a hole in the center for the connection). The plan is to localize the damage, not prevent it. Maybe seal the battery compartment. Just thought I would post it here as a reminder not to assume anything about battery life. There should be a warranty on the batteries. http://www.energizerbatteries.com/WarrantyInformation.pdf Ugh... 1 year. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 See my reply to John, I wish I had seen some leakage (current that is, not chemical). It's hard to get excited about one anecdote with unknown conditions. I think the most plausible explanation so far is that the remote got stuck between the cushions or somebody laid something on it long enough to run it down. And sometimes batteries just fail. If it's seldom used and the standby current is zero, there's no reason for the battery to have failed...other than battery failure...which happens. |
Energizer 2013 AA Cell already leaking
wrote:
On Jan 1, 5:04 pm, " wrote: On Jan 1, 4:28 pm, Jeff Liebermann wrote: On Sun, 1 Jan 2012 10:51:36 -0800 (PST), " wrote: Good pont about the idle/leakage current. I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. Well, if your remote uses 2 batteries, you would have a total of 4000 ma-hr of capacity. At a 25ma draw, that's 4000 / 25 = 160 hrs = 6.67 days if someone sat on a remote button. Could I trouble you to double check the standby current, possibly with a more sensitive amps guesser? To drain the 4000 ma-hr batteries in 2 years (17,520 hrs), you only need: 4000 / 17520 = 228 ua of leakage. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Yeah, I did double check it, two separate measurements a couple of minutes apart andredid thechecking wiring to make sure it was going thru the remote, hence the pushbutton current draw and the idle. The other battery of the two AA Energizers in the remote still functioned. Just luck of the draw I guess. Today is the day to check up on all the things that I am too busy to do the rest of the year. Hard to believe I've been retired from Bell Labs fo exactly 10.5 years and still so busy doing things that I have to schedule a day to do catch up on things I would rahter not do at all.- Hide quoted text - - Show quoted text - The remote was sitting on the back of the tv table with the keyboard up. The leakage was on the negative spring and on the removable trapdoor so I wiped the spring and washed the trapdoor off, everything works fine. It would not be worth the trouble to ship it to Energizer to try to get a replacement reote. I will call them to let them know what happened tomorrow when most everybody is back to work and see if they will send me free coupons. I'll report back here what happens. Use a mix 50/50 of water/white vinegar to neutralize the base (alkalye) that leaked from the batteries. http://flippers.com/battery.html John :-#)# -- (Please post followups or tech enquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
Energizer 2013 AA Cell already leaking
Rheilly Phoull wrote:
On 1/2/2012 12:53 AM, wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. Well I know it's a contentious thing to talk about which brand but we have just stopped buying Eveready products because to us they are just inferior to another popular brand in most ways, like endurance and leakage etc. IMHO it is also a good idea to wipe the contact surfaces with an oily rag or a thin smear of grease when installing batteries that are used in flashlights and the like. Whilst it's hard to remember, following most manufacturer's advice to remove the batteries if the device is to be unused for long periods is sound :-) Rheilly P Well, I could chime in here to point out that we have opened a number of video and pinball games that were factory sealed since 1980 - and they all contained either Royovac, Eveready Energizers, or Duracels as battery backups for 5101 CMOS RAM. In a number of cases the batteries (all brands) still had a charge, a few were still very close to 1.5VDC, most were around 1.0VDC. John :-#)# -- (Please post followups or tech enquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
Energizer 2013 AA Cell already leaking
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Energizer 2013 AA Cell already leaking
On 1/2/2012 9:21 AM, John Robertson wrote:
Rheilly Phoull wrote: On 1/2/2012 12:53 AM, wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. Well I know it's a contentious thing to talk about which brand but we have just stopped buying Eveready products because to us they are just inferior to another popular brand in most ways, like endurance and leakage etc. IMHO it is also a good idea to wipe the contact surfaces with an oily rag or a thin smear of grease when installing batteries that are used in flashlights and the like. Whilst it's hard to remember, following most manufacturer's advice to remove the batteries if the device is to be unused for long periods is sound :-) Rheilly P Well, I could chime in here to point out that we have opened a number of video and pinball games that were factory sealed since 1980 - and they all contained either Royovac, Eveready Energizers, or Duracels as battery backups for 5101 CMOS RAM. In a number of cases the batteries (all brands) still had a charge, a few were still very close to 1.5VDC, most were around 1.0VDC. John :-#)# You are right of course, I reckon they tend to use better construction or materials for some uses. OTOH I have seen "Golden Elephant" type units last for years too. A bit of a lottery at best and lets not get onto re-chargables :_) Rheilly P |
Energizer 2013 AA Cell already leaking
On Sun, 01 Jan 2012 14:28:19 -0800, Jeff Liebermann
wrote: On Sun, 1 Jan 2012 10:51:36 -0800 (PST), " wrote: Good pont about the idle/leakage current. I just checked it, 25 ma draw when pushing a button, 0 ua standby, so I guess idle/leakage current is out of the picture. I goofed(tm). Two batteries in series do not add the Amp-Hr capacity. My thanks to Dave Platt for the correction. Well, if your remote uses 2 batteries, you would have a total of 4000 ma-hr of capacity. At a 25ma draw, that's 4000 / 25 = 160 hrs = 6.67 days if someone sat on a remote button. That should be: 2000 / 25 = 80 hrs = 3.4 days Could I trouble you to double check the standby current, possibly with a more sensitive amps guesser? To drain the 4000 ma-hr batteries in 2 years (17,520 hrs), you only need: 4000 / 17520 = 228 ua of leakage. That should be: 2000 / 17520 = 114 ua -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Energizer 2013 AA Cell already leaking
"Sylvia Else" wrote in message
... On 2/01/2012 3:53 AM, wrote: Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. That aside, batteries are not meant to leak anymore. Some of us can no doubt remember when batteries were sold in two varieties - ordinary, and (more expensive) leak proof - the point being that the ordinary ones were pretty much guaranteed to leak when discharged, whereas the leak proof ones would not. The ordinary ones have long since vanished. Intent and practice aren't necessarily the same. Alkaline cells often "discharge" or develop a fuzzy crud. Duracells are notorious for liquid leaks, while Evereadys have never caused me problems. (Other people report exactly the opposite.) If the battery damaged the unit, contact the manufacturer. Duracell replaced the case of a dictation machine its batteries had damaged. |
Energizer 2013 AA Cell already leaking
wrote in message
... Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. A year or so back I picked up a Micronta 22-206 FET multimeter in almost NOS condition in it's box. Inside the meter were an original Radio Shack C cell and a 9V battery. Both were dead, but absolutely NO sign of leakage (lucky me). The dates of the unit and batteries were about 1975 IIRC. Mark Z. |
Energizer 2013 AA Cell already leaking
On Jan 1, 10:53*am, " wrote:
Happened to try a seldom-used tv remote control last night, dead. opened it up, one 2013 AA Energizer battery was fine, the other was dead and leaking. *I stupidly thought that the date on batterries was how long they were supposed to last if they were not used - shelf life. Since the battery was not used more than a few minutes since it was put in the remote a couple of years ago, and had been in an air- conditioned and heated room in the house for its entire time since I brought it home from the store, I thought that it was safe to leave it in the remote without having to periodically check for leakage. Fortunately, the leakage was minor and because of the physical position of the remote, the leakage went onto the inside of the back cover and did not get into the electronics in the remote. Just thought I would post it here as a reminder not to assume anything about battery life. I registered a complaint on the energizer web site, we'll see if they respond or if I have to actually call them. |
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