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Windows 7: Calibrate Battery Laptop

16 Aug 2011   #1

Windows 7 Home Premium 64bit
 
 
Calibrate Battery Laptop

Hi, I want to calibrate my battery laptop. When I check critical battery action, I cannot find 'Do Nothing' (only three options: Sleep, Shut down, Hibernate). In order to calibrate, I need the battery to fully drained (I mean till 0%, because I cannot change Critical battery Level (5%), after my battery is 5% left, my laptop will hibernate). What must I do to drain my battery laptop fully?

For your information, my laptop is Acer. If it can helps.

Thanks,

My System SpecsSystem Spec
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16 Aug 2011   #2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

You can try setting critical battery action to nothing for the active power plan using powercfg.

How to set the Critical battery action to 'Do Nothing' in Windows Vista

For the non-current power plan slightly more complicated.

How To Lower the Critical Battery Level to 1% in Windows 7 - How-To Geek
My System SpecsSystem Spec
16 Aug 2011   #3

Windows 7 Home Premium 64bit
 
 

Great, it worked. Thank you so much, . Now, I can calibrate my battery laptop.
My System SpecsSystem Spec
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16 Aug 2011   #4

Windows 7 64b Ultimate
 
 

Be careful with going too low: How to Prolong Lithium-based Batteries - Battery University
It can kill your battery. The thresholds are there for a reason...
My System SpecsSystem Spec
16 Aug 2011   #5

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate SP1 X64 (Windows 8.1, Linux Mint, Windows XP in VM)
 
 

Some laptops have the calibrate option in bios.
My System SpecsSystem Spec
17 Aug 2011   #6

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by MvdB View Post
Be careful with going too low: How to Prolong Lithium-based Batteries - Battery University
It can kill your battery. The thresholds are there for a reason...
Well, thanks for the information. I don't know that too many cycle of charging will decrease the battery's performance. I'll be more careful when I want to calibrate my battery's laptop.

By the way, do you think it is necessary to calibrate the battery to keep the performance? (Hope this is not out of topic.)

Quote   Quote: Originally Posted by essenbe View Post
Some laptops have the calibrate option in bios.
Which one is it? I don't know, tell me please.
My System SpecsSystem Spec
17 Aug 2011   #7

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate SP1 X64 (Windows 8.1, Linux Mint, Windows XP in VM)
 
 

I have a Samsung RF711 that has a 'calibrate battery' option in bios. I do it around once a month as i usually have mine plugged in and rarely use the battery. I have an option in the OS (a Samsung utility) that is supposed to be battery saver. It will only charge the battery up to 80%.
My System SpecsSystem Spec
17 Aug 2011   #8

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

The battery fuel guage can go out of sync with the held-charge because of short charges and discharges. So the battery meter may show inaccurate info. Calibration resyncs them. But yes, calibration is only something to be done once in a while.
My System SpecsSystem Spec
17 Aug 2011   #9

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate SP1 X64 (Windows 8.1, Linux Mint, Windows XP in VM)
 
 

Bill2, we hardly ever use the battery we always plug it in. So, when I calibrate it should i take it down to 0 or just take it down to say 10% ?
My System SpecsSystem Spec
17 Aug 2011   #10

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Quote   Quote: Originally Posted by essenbe View Post
Bill2, we hardly ever use the battery we always plug it in. So, when I calibrate it should i take it down to 0 or just take it down to say 10% ?
For calibration, I would drain it all the way down, after that restore the usual settings (hibernate at 5%).
My System SpecsSystem Spec
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 Calibrate Battery Laptop





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