A Computer hardware and components forum. ComputerBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » ComputerBanter.com forum » Processors » General
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Laptop battery no longer gets charged



 
 
Thread Tools Display Modes
  #21  
Old August 19th 11, 07:45 PM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
Paul
external usenet poster
 
Posts: 13,411
Default 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  
Old August 19th 11, 10:19 PM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
Yousuf Khan[_2_]
external usenet poster
 
Posts: 1,216
Default 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  
Old August 20th 11, 12:26 AM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
David H. Lipman
external usenet poster
 
Posts: 408
Default 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  
Old August 20th 11, 12:31 AM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware
Twayne
external usenet poster
 
Posts: 8
Default 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  
Old August 22nd 11, 11:27 PM posted to comp.sys.ibm.pc.hardware.chips
ebatts
external usenet poster
 
Posts: 1
Default Laptop battery no longer gets charged


'Yousuf Khan[_2_ Wrote:
;1061230']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


'Yousuf Khan[_2_ Wrote:
;1061230']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

Most likely your laptop battery failed. If it was an OEM battery, then
it might have seen a low life over time. If it was aftermarket, you
might have purchased a refurbished laptop battery, where they take used
laptop battery cells that are still good and put them all back together
and sell it as refurbished, but mark them as new. Those refurbished
laptop batteries do not last long and tend to die after a year. If you
also don't charge and discharge your laptop battery, then it will also
see a shorter lifespan. There are some laptop battery tips at the bottom
of this 'laptop battery page'
(http://www.ebatts.com/laptop_manufacturers.aspx).

If you bought the laptop battery recently, some companies carry a 1-3
year warranty and will send out a new replacement.




--
ebatts
  #26  
Old November 18th 11, 12:29 AM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
RJK
external usenet poster
 
Posts: 3
Default 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


  #27  
Old November 18th 11, 01:02 AM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
David H. Lipman
external usenet poster
 
Posts: 408
Default 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


  #28  
Old November 18th 11, 11:29 PM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
J. P. Gilliver (John)
external usenet poster
 
Posts: 114
Default 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)[email protected]+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.
  #29  
Old November 19th 11, 11:14 AM posted to comp.sys.ibm.pc.hardware.chips,microsoft.public.windowsxp.hardware,microsoft.public.windowsxp.general
Yousuf Khan[_2_]
external usenet poster
 
Posts: 1,216
Default 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
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
HP ink cartridge charged at $12,400 per gallon Bob G Printers 15 December 5th 07 04:13 PM
Gateway 7422 laptop not working off battery(which shows 93% charged) [email protected] Gateway Computers 0 March 20th 06 04:17 PM
Presario 1200 Notebook won't recognize a fully charged battery J West Compaq Computers 2 October 17th 05 06:05 AM
Perc Batteries needing charged........what problems can this cause? Mick Miller Dell Computers 3 April 2nd 04 08:31 AM


All times are GMT +1. The time now is 07:40 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©2004-2018 ComputerBanter.com.
The comments are property of their posters.