Windows 7 - Calibrate Battery Laptop

R3QuI3M · 08-16-2011

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,

Bill2 · 08-16-2011

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

R3QuI3M · 08-16-2011

Great, it worked. Thank you so much,

. Now, I can calibrate my battery laptop.

MvdB · 08-16-2011

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...

essenbe · 08-16-2011

Some laptops have the calibrate option in bios.

R3QuI3M · 08-17-2011

Quote: Originally Posted by MvdB

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: Originally Posted by essenbe

Some laptops have the calibrate option in bios.

Which one is it? I don't know, tell me please.

essenbe · 08-17-2011

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%.

Bill2 · 08-17-2011

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.

essenbe · 08-17-2011

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% ?

Bill2 · 08-17-2011

Quote: Originally Posted by essenbe

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%).

Windows 7 - Calibrate Battery Laptop

Calibrate Battery Laptop problems?