Question about IBM ThinkPad A31 Notebook

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Computer dies FAST when unplugged even though power may register 100% befor unplugging also laptop does not seem to recognize battery properly . battery power goes from 100% to 35% overnight if unplug

Thinkpad does not seem to recognize battery life correctly. laptop dies quickly when unpluged.

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You have a dead battery or the charging circuit is faulty. If you have had the battery since you purchased the laptop, then it is worn out and needs to be replaced.

Posted on Apr 24, 2009

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Why is my laptop unable to run off battery power, even though battery shows fully charged and AC is unplugged


It's time for you to replace your battery.

how old is your laptop? and how do u use it - do u leave it plugged into the wall socket all the time? It's common for batteries to die out after a couple of years. however, if the computer overheats or if you leave it plugged in all the time, it's life cycle will decrease. Charge - discharge cycles. That's how you are suposed to do it.

Jul 17, 2014 | Lenovo IdeaPad U550 Notebook

1 Answer

Laptop not recognizing mp3 player


First of all unplug power chord from computer. Remove battery if it is a laptop. Unplug device from usb.
wait ten minutes, plug all back and restart all, see if this work

Mar 22, 2008 | Creative Labs Nomad Jukebox Zen Xtra MP3...

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AC Adapter issues Q & A.


<p><b>Laptop switching to battery while connected to AC adapter</b><br /> <p><b>Q.</b> While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small "camera flash charging" sound, stabilizing at 19v. When charging, it repeatedly makes the "charging sound" Faulty AC adaptor? Or Faulty battery? Or Both?<br /> <p><b>A. </b>First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It's either broken or loose. It's a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.<br /> <p>It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.<br /> <p>Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.<br /> <p><b>Battery charging light is on even when power adapter is unplugged and laptop is stitched off</b><br /> <p><b>Q.</b>The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected. <br /> <p><b>A.</b> First of all, try reconnection the battery if you haven't done it already.<br />The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it's either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.<br /> <p>Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.<br /> <p><b>Battery charges only when the laptop is off</b><br /> <p><b>Q.</b> Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.<br /> <p><b>A.</b> This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you'll have to find an adapter which provides 4.74A or MORE. <br /> <p><b>While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.</b><br /> <p><b>Q.</b> While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it's full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.<br /> <p><b>A.</b> There could be a few different reasons why it happens:<br />1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.<br />2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.<br />3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it's not a problem with the battery. You'll have to check the motherboard in this case. <br /> <p><b>Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.</b><br /> <p><b>Q.</b> When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.<br />When I plug the AC cord, it won't directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).<br />If I turn-off the laptop and then charge the battery, it won't also directly charge but the delay is much shorter (maybe just about 1-2 minutes).<br />Is this the sign of a bad battery (when hot it can't be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)<br />Note that this symptom is always repeating when I use the laptop.<br /> <p><b>A.</b> From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same - the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You'll have to replace the battery.<br />I'm not sure about the second part. Probably it's a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS. <br /> <p><b>The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.</b><br /> <p><b>Q.</b> When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the "critical battery level" message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?<br /> <p><b>A.</b> It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:<br />1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.<br />2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes. <br />

on Mar 15, 2011 | Computers & Internet

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AC Adapter issues Q & A.


<p><b>Laptop switching to battery while connected to AC adapter</b><br /> <p><b>Q.</b> While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small "camera flash charging" sound, stabilizing at 19v. When charging, it repeatedly makes the "charging sound" Faulty AC adaptor? Or Faulty battery? Or Both?<br /> <p><b>A. </b>First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It's either broken or loose. It's a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.<br /> <p>It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.<br /> <p>Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.<br /> <p><b>Battery charging light is on even when power adapter is unplugged and laptop is stitched off</b><br /> <p><b>Q.</b>The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected. <br /> <p><b>A.</b> First of all, try reconnection the battery if you haven't done it already.<br />The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it's either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.<br /> <p>Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.<br /> <p><b>Battery charges only when the laptop is off</b><br /> <p><b>Q.</b> Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.<br /> <p><b>A.</b> This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you'll have to find an adapter which provides 4.74A or MORE. <br /> <p><b>While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.</b><br /> <p><b>Q.</b> While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it's full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.<br /> <p><b>A.</b> There could be a few different reasons why it happens:<br />1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.<br />2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.<br />3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it's not a problem with the battery. You'll have to check the motherboard in this case. <br /> <p><b>Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.</b><br /> <p><b>Q.</b> When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.<br />When I plug the AC cord, it won't directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).<br />If I turn-off the laptop and then charge the battery, it won't also directly charge but the delay is much shorter (maybe just about 1-2 minutes).<br />Is this the sign of a bad battery (when hot it can't be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)<br />Note that this symptom is always repeating when I use the laptop.<br /> <p><b>A.</b> From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same - the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You'll have to replace the battery.<br />I'm not sure about the second part. Probably it's a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS. <br /> <p><b>The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.</b><br /> <p><b>Q.</b> When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the "critical battery level" message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?<br /> <p><b>A.</b> It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:<br />1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.<br />2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes

on Jan 17, 2011 | Computers & Internet

1 Answer

Battery Wont Charge Past 65%


There is a short-circuit happened at your laptop or the laptop charger.

Aug 12, 2013 | Computers & Internet

1 Answer

When i pull out the power cord on my N150 plus the comp crashes,even though the battery is saying 100 per cent..any idea?


A lot of times this happens when the battery has gone bad and needs to be replaced. It might say 100%, but due to use (and sometimes just due to a faulty battery) the battery will charge less and less and eventually won't hold a charge at all. For example, when I first got my laptop a year and a half ago, I could get almost six hours out of a charge. Now I get almost twenty minutes. Unfortunately, I would say you need a battery. You can get one either from samsung (though you may have to call them, I couldn't find your battery on the site), Newegg.com, or ebay.com.

Some good tips for handling your new battery. First, if the computer's plugged in, remove the battery. Put it back in before you unplug it. This will prevent long-term wear on your battery. Secondly, it's good to regularly (I'd say yearly or so) let your computer "die" on battery (run it until the battery dies), then charge it completely THREE TIMES. This will "cycle" your battery. They say that with the newer batteries used nowadays this isn't an issue, because the new type of battery doesn't create the crystals like the older type does, but it can't hurt anything and I've noticed a difference when I do it.

I'm sorry about the bad news, but hopefully this will help!

Aug 22, 2011 | Samsung N150 (36725723009) Netbook

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AC Adapter issues Q & A.


Laptop switching to battery while connected to AC adapter
Q. While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small “camera flash charging” sound, stabilizing at 19v. When charging, it repeatedly makes the “charging sound” Faulty AC adaptor? Or Faulty battery? Or Both?
A. First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It’s either broken or loose. It’s a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.
It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.
Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.
Battery charging light is on even when power adapter is unplugged and laptop is stitched off
Q.The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected.
A. First of all, try reconnection the battery if you haven’t done it already.
The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it’s either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.
Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.
Battery charges only when the laptop is off
Q. Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.
A. This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you’ll have to find an adapter which provides 4.74A or MORE.
While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.
Q. While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it’s full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.
A. There could be a few different reasons why it happens:
1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.
2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.
3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it’s not a problem with the battery. You’ll have to check the motherboard in this case.
Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.
Q. When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.
When I plug the AC cord, it won’t directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).
If I turn-off the laptop and then charge the battery, it won’t also directly charge but the delay is much shorter (maybe just about 1-2 minutes).
Is this the sign of a bad battery (when hot it can’t be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)
Note that this symptom is always repeating when I use the laptop.
A. From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same – the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You’ll have to replace the battery.
I’m not sure about the second part. Probably it’s a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS.
The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.
Q. When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the “critical battery level” message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?
A. It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:
1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.
2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes.

on Jun 12, 2010 | Computers & Internet

1 Answer

It will not turn on and the charger doesn't seem to work even though it is properly plugged in.


remove the battery and unplug the power adapter. press power button for 30 sec. then connect power adapter. press power button.

Mar 21, 2010 | Computers & Internet

1 Answer

Powere adaptor has to be unplugged to boot


There could be a problem with the battery. A fast check to determine whether you have a problem with the power adapter, power cord or the laptop's battery is to turn off the laptop, remove the battery, connect the power adapter, turn on the laptop & see if it works.
If the laptop works directly from the power adapter with the battery removed, then the power adapter is good. In this case we can suspect that the battery is defective & needs to be replaced.

If this did not work, try also disassembling the laptop & make sure that all main components are seated properly. Also make sure that all ribbon cables interconnecting the various components of the laptop are tightly connected.

Dec 22, 2009 | Dell Precision M90 Notebook

2 Answers

2 of 4 USB Ports Not Functioning


Most likely a motherboard problem, though you can try and re-do windows, best bet on getting it all to work is Turn off CPU, Unplug Power cable, And all usb devices, let it sit for about 20mins. Plug it all back in. Turn on the CPU! Though this might really get on your nerves having to do this multiple times, id get a new motherboard.

Dec 26, 2008 | Gateway 4540GZ Notebook

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