"Consider Replacing Your Battery"

[Aphasia]

I have just forked out on a brand new battery as win7 advised me to do and it hasn't made any difference.

Then there is something wrong with your HARDWARE. Why is this so hard to understand? Windows 7 is only telling you what the HARDWARE tells it! The battery itself is a self contained system. Windows itself cannot tamper with the battery's inner workings.

You need to contact the manufacture of your computer. Only they can fix your HARDWARE problem.

Ok, I respect your opinion however this only happened after I upgraded to windows 7 software and you cannot blame me for suspecting Win7 being the culprit due to this and also bearing in mind the mass accusations as such web-wide.

So you are saying that some part of the hardware has killed 2 batteries, one being brand new?

How do you know that it is not a conflict/ read error on behalf of Windows 7? How are you able to rule this out?

This problem did not occur in Vista, my battery was fine, no 'consider replacing your battery' message came up. If a hardware problem as you suggest now exists after my upgrade to Win7, it would appear that Win7 has damaged some hardware of my laptop would it not?

Thanks

 

[logicearth]

This problem did not occur in Vista, my battery was fine, no 'consider replacing your battery' message came up. If a hardware problem as you suggest now exists after my upgrade to Win7, it would appear that Win7 has damaged some hardware of my laptop would it not?

Thanks

Windows Vista had no message, this feature is brand new in Windows 7. So Windows Vista would have never told you. Retrieving the current life of the battery is a new feature in Windows 7, thus why this message has only ever appeared in Windows 7.

http://blogs.msdn.com/b/e7/archive/2010/02/08/windows-7-battery-notification-messages.aspx

Windows 7 makes use of a feature of modern laptop batteries which have circuitry and firmware that can report to Windows the overall health of the battery. This is reported in absolute terms as Watt-hours (W-hr) power capacity. Windows 7 then does a simple calculation to determine a percentage of degradation from the original design capacity. In Windows 7 we set a threshold of 60% degradation (that is the battery is performing at 40% of its designed capacity) and in reading this Windows 7 reports the status to you. At this point, for example, a battery that originally delivered 5 hours of charge now delivers, on average, approximately 2 hours of charge. The Windows 7 the notification is a battery meter icon and notification with a message “Consider replacing your battery”. This notification is new to Windows 7 and not available in Windows Vista or Windows XP.

...

PC batteries expose information about battery capacity and health through the system firmware (or BIOS). There is a detailed specification for the firmware interface (ACPI), but at the most basic level, the hardware platform and firmware provide a number of read-only fields that describe the battery and its status. The firmware provides information on the battery including manufacturer, serial number, design capacity and last full charge capacity. The last two pieces of information—design capacity and last full charge capacity—are the information Windows 7 uses to determine how much the battery has naturally degraded. This information is read-only and there is no way for Windows 7 or any other OS to write, set or configure battery status information. In fact all of the battery actions of charging and discharging are completely controlled by the battery hardware. Windows only reports the battery information it reads from the system firmware.

If there is a read error it would be the BIOS/Motherboard or the specific hardware drivers your computer uses. Windows itself follows the ACPI specification, if the hardware does not follow this then the hardware must have drivers. These drivers are supplied by the manufacture.

 

[Aphasia]

Well would you adam and eve it, turns out it was a virus.

"Threat Win32:FakeAlert-VX [Trj]"

zapped it with Avast and now the red cross and message has disappeared.

I've even put the old battery back in (which win7 told me to replace) and still the red cross and message has gone.

Maybe this info will help others.

 

[ickymay]

glad you have it sorted

and thanks for sharing that

 

[profcommie]

I am having a similar issue with an HP dv9623cl. I recently upgraded it to Windows 7 and suddenly my battery only lasts 45 minutes. This means I can't get it to go through a single class without running out of power.

Battery ID Hewlett-PackardPrimary
Design Capacity 88800
Last Full Charge 26048
Last Full Charge (%) 29

This was with the laptop on sleep mode charging for approximately 6 hours

I resisted upgrading for a while bc vista was doing fine. Now my laptop runs better but my battery seems to be trashed. Right before I installed windows 7 i ran it for 2.5 hours and had 20% charge left

 

[WindowsStar]

BatteryCare Updated: BatteryCare

 

[Plainview]

Hello. I have Samsung R510 Windows 7 32-bit and getting this message:

Here is BatteryCare screenshot:

Can I get done with it without buying a new battery? It costs much

 

[crescent]

This is absolutely an ACPI problem, not a battery wear issue. ACPI is telling the battery it has an artificially low limit to charge and/or telling the system the battery has run down when it hasn't, forcing shutdown or sleep or whatever you have your settings on.

Disabling ACPI has magically raised the Last Full Charge level back from 35% of design capacity to 65% and raised the battery life from <60 min to 3 hrs.

Preamble
Machine- Acer Aspire 1410 bought 18 mo ago; lightly used (like once a week as a secondary netbook)- Battery gave the "consider replacing" sign recently. In general, it seemed to have a falling life much sooner than it should- 60-80 min of work time and falling rapidly.

BatteryMon and BatteryCare (which simply take the information spit out by ACPI) were saying my battery has 48840 design capacity and only 16839 last charge for a wear level of 65%. This dropped to 14000 one charge while I tried to fix this.

After killing ACPI from DeviceManager and running it down to critical a couple of times then recharging, my last full charge is around 32000 for a wear level of 35%. Even when I was running it down, it was clear the battery was lasting 3 hrs, much more than before.

I am going to keep doing it to see if the full charge can improve more and hope I can reengage ACPI since disabling it means no battery indicators.

 

[logicearth]

This is absolutely an ACPI problem, not a battery wear issue. ACPI is telling the battery it has an artificially low limit to charge and/or telling the system the battery has run down.....

You are making the wrong assumption. It is not ACPI that is the problem, it is the hardware. The hardware is what controls the information, there are only three ways for this information to be wrong that ACPI gets. One, the battery is reporting information incorrectly. Two, the motherboard and firmware for the battery controller is bugged and or reporting the information incorrectly. (Or its mangling the information in someway.) Three, the hardware specific drivers (drivers like you have for a graphics card) ACPI (aka., Windows) uses to communicate with the battery controller.

What you are doing has nothing to do with ACPI what you are doing it called calibration. Running a battery down as much as possible then recharging it in hopes the internal controller in the battery and on the motherboard resync the information.

You problem is purely hardware and or the hardware specific drivers, not Windows and not ACPI. ACPI/Windows is only reporting what the hardware tells it. If that information is incorrect that means the hardware is reporting the information incorrectly. The hardware is reporting the information incorrectly.

 

[logicearth]

Can I get done with it without buying a new battery? It costs much

Your battery is at the end of its life, 80% of the battery is dead.

 

[blazer743]

@raydabruce
if i buy a new battery will windows 7 just keep destroying every battery i buy
ir is this a one time thing?
plz reply ASAP
thanks i need the help

 

[logicearth]

@raydabruce
if i buy a new battery will windows 7 just keep destroying every battery i buy
ir is this a one time thing?
plz reply ASAP
thanks i need the help

If that happens it means your hardware is bad. Not Windows.
Talk to the manufacture of your laptop, Not Microsoft.

 

[illogicalearth]

LogicEarth, you're nonsense is about to be shattered.

Windows 7 is misreading the battery due to a bug in ACPI which results in the current battery level to be read higher then it is at for god knows what reason. i have proven this just last night by taking a completely brand new battery, which was shown by external tools to be under 10% charged and installing it into a running system.

Windows reported the battery to be 62% charged immediately, and proceeded to charge up to 100%. Every tool including windows at this point displayed the battery at having a charge of 47780, out of a possible 48840.

Continuing with the Battery break in the laptop was used till it entered hibernation. upon resume the previous charge statistics were infact 33300mVh and NOT 47780. This issue has resulted in ACPI stopping the charging at 70% of the full charge, resulting in the battery eeprom to consider the uncharged 30% to be marked bad due to cell decay.

Modification of the battery's eeprom (you need special tools) and testing with windows XP and Vista multiple times showed the first charge to only have a decay of 3%, compared to the first charge of 7, which was 30%.

I'll take it as complete ignorance on your behalf if you continue to post your in this thread at the expense of people who legitimately have a problem caused by Windows 7's ACPI bug on a wide range of laptops produced between 2006 and 2009.

 

[logicearth]

LogicEarth, you're nonsense is about to be shattered.

I am sorry, but your nonsense needs to end. Windows does not control the battery. The HARDWARE controls the battery at all levels. Windows does not charge the battery nor is it in control of telling the battery when to charge. If the hardware tells Windows the battery is charging then the battery must be charging. All of the readings come from the battery, if the information is not accurate then the hardware is not giving accurate information.

Let me break it down for you. you have a HARDWARE problem. Plain and simple.
Recap, Windows does not control the battery or its functions. It has read-only access.

Those people who have problems with batteries on there computer need to STOP chasing ghost and talk to the manufactures of their computer. You are not helping one bit, yet you have the gull to call me out?! How hypocritical of you.

Either way, those at Microsoft have already taken the time to examine this in detail.
I'll take their word over yours any day.

http://blogs.msdn.com/b/e7/archive/2010/02/08/windows-7-battery-notification-messages.aspx

...

This information is read-only and there is no way for Windows 7 or any other OS to write, set or configure battery status information. In fact all of the battery actions of charging and discharging are completely controlled by the battery hardware. Windows only reports the battery information it reads from the system firmware

....

 

[LextheYeti]

Alright people I may have a solution, and it is quite simple.
Let me break it down to you guys.

When this message appears, and you know your battery is still good, it means that the chip recording your battery life is confused.

This problem is found in many newer devices on the market today. I call the problem "Selective Battery Amnesia."
SBA occurs when someone over exposes a battery to over-charging and commencing charging before the battery is truly low.

The fix though is simple:

(Read ahead of time or keep this up on a different computer while doing this so you don't get lost)

Put your laptop on to high performance, go into the advanced power settings, click battery, then change the critical power percentage to 1%.

Go to critical battery action and set to "Shut Down."

Now be patient and let your battery drain down (I suggest a hobby around the house while you wait).

Here's the interesting part, if you watch your battery level as it reaches below 10% it will stay there a for a while, this is where the origin of your problem is.

The chip says "HEY! I'M LOW, CHARGE ME!" In reality it isn't as low as it thinks, after a while it will go down a few more percent and eventually it will shut itself off.

Now try to turn it back on once (about 10-30 seconds after) it has been off.

If it doesn't turn back on it is drained, which is good.

Now plug it back in and turn it on. When you log into Windows, the "change battery" logo should no longer be there.

If this doesn't fix your problem, try other sources such as an incompatibility with your motherboard.

I hope this helps you all, I just did it to my computer and it worked wonderfully!

 

[oblong]

Alright people I may have a solution, and it is quite simple.
Let me break it down to you guys.

When this message appears, and you know your battery is still good, it means that the chip recording your battery life is confused.

This problem is found in many newer devices on the market today. I call the problem "Selective Battery Amnesia."
SBA occurs when someone over exposes a battery to over-charging and commencing charging before the battery is truly low.

The fix though is simple:

(Read ahead of time or keep this up on a different computer while doing this so you don't get lost)

Put your laptop on to high performance, go into the advanced power settings, click battery, then change the critical power percentage to 1%.

Go to critical battery action and set to "Shut Down."

Now be patient and let your battery drain down (I suggest a hobby around the house while you wait).

Here's the interesting part, if you watch your battery level as it reaches below 10% it will stay there a for a while, this is where the origin of your problem is.

The chip says "HEY! I'M LOW, CHARGE ME!" In reality it isn't as low as it thinks, after a while it will go down a few more percent and eventually it will shut itself off.

Now try to turn it back on once (about 10-30 seconds after) it has been off.

If it doesn't turn back on it is drained, which is good.

Now plug it back in and turn it on. When you log into Windows, the "change battery" logo should no longer be there.

If this doesn't fix your problem, try other sources such as an incompatibility with your motherboard.

I hope this helps you all, I just did it to my computer and it worked wonderfully!

you da man

 

[Trion]

Alright people I may have a solution, and it is quite simple.
Let me break it down to you guys.

When this message appears, and you know your battery is still good, it means that the chip recording your battery life is confused.

This problem is found in many newer devices on the market today. I call the problem "Selective Battery Amnesia."
SBA occurs when someone over exposes a battery to over-charging and commencing charging before the battery is truly low.

The fix though is simple:

(Read ahead of time or keep this up on a different computer while doing this so you don't get lost)

Put your laptop on to high performance, go into the advanced power settings, click battery, then change the critical power percentage to 1%.

Go to critical battery action and set to "Shut Down."

Now be patient and let your battery drain down (I suggest a hobby around the house while you wait).

Here's the interesting part, if you watch your battery level as it reaches below 10% it will stay there a for a while, this is where the origin of your problem is.

The chip says "HEY! I'M LOW, CHARGE ME!" In reality it isn't as low as it thinks, after a while it will go down a few more percent and eventually it will shut itself off.

Now try to turn it back on once (about 10-30 seconds after) it has been off.

If it doesn't turn back on it is drained, which is good.

Now plug it back in and turn it on. When you log into Windows, the "change battery" logo should no longer be there.

If this doesn't fix your problem, try other sources such as an incompatibility with your motherboard.

I hope this helps you all, I just did it to my computer and it worked wonderfully!

Listen to this guy.
I did exactly what he said and it worked.

Plus, this is what i observed.
I kept my Acer Aspire to drain it's battery.
At 7%, my laptop switched off.

I switched it on again and i kept it as it is to further empty the battery.

At 6%, i thought it's only matter of few mins, that it will completely drain away.
However it took 45mins to drain away.

Now you can see that i am not technically sound but i think batteries/hardware sometimes doesn't measure the battery energy properly.
While there was energy for another 45min, it still showed 6%; so basically let your battery drain down completely every once a while.

 

[MrDonev]

Ok, I haven`t read all the 18 pages, but here is what happened to me. I was installing windows updates on battery...after the installation was done and I logged in, the battery lvl was 0% :sarc: Since that I get that "replace battery" message... Before that my battery would last for almost 2 hours ... I don`t think my battery has to be replaced, but now its ****ed because of the windows... :S

 

[Price94]

Hey peole this is NOT truly Windows problem, because i had windows 7 for nine months, and this problem wasnt here. Today, i got it. This is VIRUS that makes your system be unable to recognise how much % power is left in your baterry. After 1 hour my computer has switched OFF. I had turned it ON again and its working for more then a half hour, it is working at the moment with 0%, and i dont know how much more will it last... maybe half of hour more. So dont worry, you dont need to give 100$ for new battery, that one works good too.

 

[WindowsStar]

Battery Care has been updated: BatteryCare