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#16
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Laptop battery no longer gets charged
From: "Yousuf Khan"
On 17/08/2011 2:51 PM, David H. Lipman wrote: In all the notebooks, that's hundreds, I have managed only ONE notebook suffered from a problem with the ability to charge the battery. Okay then, so it's exceedingly rare, you're saying. I think so based upon my experience. Its possible but not probable. -- Dave Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk http://www.pctipp.ch/downloads/dl/35905.asp |
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#17
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Laptop battery no longer gets charged
In ,
Yousuf Khan typed: On 17/08/2011 2:51 PM, David H. Lipman wrote: In all the notebooks, that's hundreds, I have managed only ONE notebook suffered from a problem with the ability to charge the battery. Interesting: I've seen bent/malformed tabs and pins, damage from attempted forcing the battery and several other reasons, along with at least three chargng ckt problems over the last 4 years or so. I've also seen drop-damage now I think of it, and probably a few others, too. Newbies bring in a lot of machines. -- Regards, Tom` Okay then, so it's exceedingly rare, you're saying. Yousuf Khan |
#18
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Laptop battery no longer gets charged
In ,
Twayne wrote: In , Yousuf Khan typed: On 17/08/2011 2:51 PM, David H. Lipman wrote: In all the notebooks, that's hundreds, I have managed only ONE notebook suffered from a problem with the ability to charge the battery. Interesting: I've seen bent/malformed tabs and pins, damage from attempted forcing the battery and several other reasons, along with at least three chargng ckt problems over the last 4 years or so. I've also seen drop-damage now I think of it, and probably a few others, too. Newbies bring in a lot of machines. Okay then, so it's exceedingly rare, you're saying. Yousuf Khan Yup, I have seen those too. And those of us, who fly a lot with our laptops... also discovered that most of the time the aircraft only supplies so much power per outlet and that is it. And laptops are pretty good about adjusting for a lower wattage supply. And what they generally do is to disable battery charging but the rest of the laptop works fine otherwise. That is another thing to check once you know the problem isn't the battery. Remember I offered to send you a battery to check your computer with. Anyway your AC power supply could also not put out all of the amperage that it used too. In that case, the laptop will refuse to charge the battery, but work fine otherwise. -- Bill Gateway M465e ('06 era) - OE-QuoteFix v1.19.2 Centrino Core Duo 1.83G - 2GB - Windows XP SP3 |
#19
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Laptop battery no longer gets charged
In ,
BillW50 wrote: Yup, I have seen those too. And those of us, who fly a lot with our laptops... also discovered that most of the time the aircraft only supplies so much power per outlet and that is it. And laptops are pretty good about adjusting for a lower wattage supply. And what they generally do is to disable battery charging but the rest of the laptop works fine otherwise. That is another thing to check once you know the problem isn't the battery. Remember I offered to send you a battery to check your computer with. Anyway your AC power supply could also not put out all of the amperage that it used too. In that case, the laptop will refuse to charge the battery, but work fine otherwise. Oh yeah Yousuf, not only could I send you a battery to test, but I also have AC power supplies too that I could send for you for testing. You could email me by changing KOM to COM if you are interested. -- Bill Gateway M465e ('06 era) - OE-QuoteFix v1.19.2 Centrino Core Duo 1.83G - 2GB - Windows XP SP3 |
#20
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Laptop battery no longer gets charged
On 18/08/2011 1:59 PM, BillW50 wrote:
In , BillW50 wrote: Yup, I have seen those too. And those of us, who fly a lot with our laptops... also discovered that most of the time the aircraft only supplies so much power per outlet and that is it. And laptops are pretty good about adjusting for a lower wattage supply. And what they generally do is to disable battery charging but the rest of the laptop works fine otherwise. That is another thing to check once you know the problem isn't the battery. Remember I offered to send you a battery to check your computer with. Anyway your AC power supply could also not put out all of the amperage that it used too. In that case, the laptop will refuse to charge the battery, but work fine otherwise. Oh yeah Yousuf, not only could I send you a battery to test, but I also have AC power supplies too that I could send for you for testing. You could email me by changing KOM to COM if you are interested. Well, I ended up ordering a new battery online, and it came in today. I put it in, and it's being successfully charged up. So my problem is solved. Just wondering what caused the previous battery to fail in the way that it did? Yousuf Khan |
#21
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Laptop battery no longer gets charged
Yousuf Khan wrote:
On 18/08/2011 1:59 PM, BillW50 wrote: In , BillW50 wrote: Yup, I have seen those too. And those of us, who fly a lot with our laptops... also discovered that most of the time the aircraft only supplies so much power per outlet and that is it. And laptops are pretty good about adjusting for a lower wattage supply. And what they generally do is to disable battery charging but the rest of the laptop works fine otherwise. That is another thing to check once you know the problem isn't the battery. Remember I offered to send you a battery to check your computer with. Anyway your AC power supply could also not put out all of the amperage that it used too. In that case, the laptop will refuse to charge the battery, but work fine otherwise. Oh yeah Yousuf, not only could I send you a battery to test, but I also have AC power supplies too that I could send for you for testing. You could email me by changing KOM to COM if you are interested. Well, I ended up ordering a new battery online, and it came in today. I put it in, and it's being successfully charged up. So my problem is solved. Just wondering what caused the previous battery to fail in the way that it did? Yousuf Khan I understand with the laptop battery technology, it isn't safe to charge the battery, if the terminal voltage drops too low. The charger won't touch it in that case. Now, why it's showing a little capacity left, I don't know. Perhaps the undervoltage cutoff threshold value has shifted ? http://batteryuniversity.com/learn/a..._ion_batteries "Over-discharging Lithium-ion If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible." "Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat." HTH, Paul |
#22
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Laptop battery no longer gets charged
On 19/08/2011 2:45 PM, Paul wrote:
Yousuf Khan wrote: Well, I ended up ordering a new battery online, and it came in today. I put it in, and it's being successfully charged up. So my problem is solved. Just wondering what caused the previous battery to fail in the way that it did? Yousuf Khan I understand with the laptop battery technology, it isn't safe to charge the battery, if the terminal voltage drops too low. The charger won't touch it in that case. Now, why it's showing a little capacity left, I don't know. Perhaps the undervoltage cutoff threshold value has shifted ? http://batteryuniversity.com/learn/a..._ion_batteries "Over-discharging Lithium-ion If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible." "Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat." Sounds good enough to me, as a possible explanation. Yousuf Khan |
#23
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Laptop battery no longer gets charged
From: "Yousuf Khan"
On 19/08/2011 2:45 PM, Paul wrote: Yousuf Khan wrote: Well, I ended up ordering a new battery online, and it came in today. I put it in, and it's being successfully charged up. So my problem is solved. Just wondering what caused the previous battery to fail in the way that it did? Yousuf Khan I understand with the laptop battery technology, it isn't safe to charge the battery, if the terminal voltage drops too low. The charger won't touch it in that case. Now, why it's showing a little capacity left, I don't know. Perhaps the undervoltage cutoff threshold value has shifted ? http://batteryuniversity.com/learn/a..._ion_batteries "Over-discharging Lithium-ion If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible." "Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat." Sounds good enough to me, as a possible explanation. Yousuf Khan Good notebooks "regulate" the charge to the battery and I don't think the above is totally the explanation. I am glad thinks worked out for you. The lesson is for all intents and puprposes, what you experienced is relatively normal as the batteries have a life. How they express their EoL is not always the same. -- Dave Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk http://www.pctipp.ch/downloads/dl/35905.asp |
#24
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Laptop battery no longer gets charged
In ,
Yousuf Khan typed: On 18/08/2011 1:59 PM, BillW50 wrote: In , BillW50 wrote: Yup, I have seen those too. And those of us, who fly a lot with our laptops... also discovered that most of the time the aircraft only supplies so much power per outlet and that is it. And laptops are pretty good about adjusting for a lower wattage supply. And what they generally do is to disable battery charging but the rest of the laptop works fine otherwise. That is another thing to check once you know the problem isn't the battery. Remember I offered to send you a battery to check your computer with. Anyway your AC power supply could also not put out all of the amperage that it used too. In that case, the laptop will refuse to charge the battery, but work fine otherwise. Oh yeah Yousuf, not only could I send you a battery to test, but I also have AC power supplies too that I could send for you for testing. You could email me by changing KOM to COM if you are interested. Well, I ended up ordering a new battery online, and it came in today. I put it in, and it's being successfully charged up. So my problem is solved. Just wondering what caused the previous battery to fail in the way that it did? Yousuf Khan Roll of the dice; not unusual. Look up how batteres work. f'ups set to stop bombardment of non-relevant groups. HTH, Twayne` |
#25
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Laptop battery no longer gets charged
"David H. Lipman" wrote in message ... From: "BillW50" In , David H. Lipman wrote: From: "Yousuf Khan" I got an older model laptop running XP, it's a Gateway MX6440, which is about 6 or 7 years old now. I keep it around to run older software which may not have been ported to Windows 7. Just recently I noticed that it's no longer charging its battery. The battery is just over 1 year old, and it replaced the original battery. I see the Power icon showing that I'm running on the AC mains, and that the battery has 0% charge left on it, but the icon doesn't show any charging going on. I could possibly get another battery, but I'm afraid that maybe there's nothing wrong with the battery, and the problem might lie with the circuitry that charges the battery from the mains. Any way to test this? The problem just occurred last week. Before that it was charging fine. Replace it. They don't last long. That's why a notebook might have a 3 yr warranty but the battery only has a 1 yr warranty. The same goes with powertools like Makita and DeWalt, etc. It depends on how you treat them. I have had Li-Ion batteries last up to 10 years while Barry Watzman got 12 years out of his. Maybe. But normal usage shows the average battery doesn't last long. As a function of time any given rechargable battery is less capable of holding a charge for its rated discharge period as well as its ability to supply full power decreases. Then you have to look at how the charge/discharge cycles affect different technologies; Lead/acid, LiION, NiMH, NiCAD, etc. I just had to replace the battery in my Makita some months ago. It would charge up but when I used the Makita it wasn't long before I had to recharge it again. Think about your automobiles (or boats) and over their life span you had to replace the battery. -- Dave Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk http://www.pctipp.ch/downloads/dl/35905.asp I'm going to have to buy a new set of "Salt Crystal" batteries for my electric scooter soon, only bought it in April this year !!! ....as I head out the back door I do a zig-zag ...car on left - £4 for 22 mile round trip, scooter on right - 12 pence electricity !! :-) .....if raining, car wins every time ! regards, Richard |
#26
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Laptop battery no longer gets charged
From: "RJK"
"David H. Lipman" wrote in message ... From: "BillW50" In , David H. Lipman wrote: From: "Yousuf Khan" I got an older model laptop running XP, it's a Gateway MX6440, which is about 6 or 7 years old now. I keep it around to run older software which may not have been ported to Windows 7. Just recently I noticed that it's no longer charging its battery. The battery is just over 1 year old, and it replaced the original battery. I see the Power icon showing that I'm running on the AC mains, and that the battery has 0% charge left on it, but the icon doesn't show any charging going on. I could possibly get another battery, but I'm afraid that maybe there's nothing wrong with the battery, and the problem might lie with the circuitry that charges the battery from the mains. Any way to test this? The problem just occurred last week. Before that it was charging fine. Replace it. They don't last long. That's why a notebook might have a 3 yr warranty but the battery only has a 1 yr warranty. The same goes with powertools like Makita and DeWalt, etc. It depends on how you treat them. I have had Li-Ion batteries last up to 10 years while Barry Watzman got 12 years out of his. Maybe. But normal usage shows the average battery doesn't last long. As a function of time any given rechargable battery is less capable of holding a charge for its rated discharge period as well as its ability to supply full power decreases. Then you have to look at how the charge/discharge cycles affect different technologies; Lead/acid, LiION, NiMH, NiCAD, etc. I just had to replace the battery in my Makita some months ago. It would charge up but when I used the Makita it wasn't long before I had to recharge it again. Think about your automobiles (or boats) and over their life span you had to replace the battery. -- Dave Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk http://www.pctipp.ch/downloads/dl/35905.asp I'm going to have to buy a new set of "Salt Crystal" batteries for my electric scooter soon, only bought it in April this year !!! ...as I head out the back door I do a zig-zag ...car on left - £4 for 22 mile round trip, scooter on right - 12 pence electricity !! :-) ....if raining, car wins every time ! regards, Richard Good luck Richard! ;-) -- Dave Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk http://www.pctipp.ch/downloads/dl/35905.asp |
#27
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Laptop battery no longer gets charged
[]
From: "Yousuf Khan" I got an older model laptop running XP, it's a Gateway MX6440, which is about 6 or 7 years old now. I keep it around to run older software which may not have been ported to Windows 7. Just recently I noticed that it's no longer charging its battery. The battery is just over 1 year old, and it replaced the original battery. I see [] Why did you replace the original battery? Do you still have it? -- J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf What would be unusual would be if there weren't any coincidences at all for several days in a row. Andy Roberts (UMRAt), 23rd. October 1998. |
#28
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Laptop battery no longer gets charged
On 18/11/2011 6:29 PM, J. P. Gilliver (John) wrote:
[] From: "Yousuf Khan" I got an older model laptop running XP, it's a Gateway MX6440, which is about 6 or 7 years old now. I keep it around to run older software which may not have been ported to Windows 7. Just recently I noticed that it's no longer charging its battery. The battery is just over 1 year old, and it replaced the original battery. I see [] Why did you replace the original battery? Do you still have it? Original battery was holding little more than than an one hour charge anymore (after 5 years of use), usually less. It's long gone, sent to the appropriate waste disposal depot. Yousuf Khan |
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