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Battery not lasting nearly as long as it used to....


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#1 The-Administrater

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Posted 27 June 2016 - 11:37 AM

I may get a new battery for my laptop. However I am a bit confused as to the results of my battery wear. I have used a CMD prompt tool and also a downloadable tool that measures my battery wear. Both tools have said my battery wear level is 100%.  Specifically:

 

 
Full Charged Capacity    47,639 mWh    
Designed Capacity    47,639 mWh    
Battery Wear Level    100.0%  

 

This leads me to believe the readings are inaccurate. I will perform a battery calibration. I read this is done by:

 

Charge battery to 100%. Computer can be used during this.

Disable power settings. (sleep, hibernate etc)

Set to hibernate at 5% power level

Unplug laptop and discharge the battery until computer hibernates. Computer can be used normally.

Leave for about 5 hours like this (??)

Recharge to 100%. Computer can be used normally.

Sensors should now produce a more accurate reading.

 

1: Even as a one off, does this sound too bad for the battery?

2: My computer doesnt randomly cut out at 20% (or any other percentage) so far. Is a battery calibration really necessary?

3: Any other reason my laptops sensors are not indicating any wear what so ever? Dont want to waste money on a new battery if its just sensors misreading.

 



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#2 JohnC_21

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Posted 27 June 2016 - 11:43 AM

Was the command prompt tool used powercfg?

 

If you have Windows 8 or higher you can create a battery report using powercfg /batteryreport

 

http://www.howtogeek.com/217255/use-the-hidden-powercfg-tool-to-optimize-battery-life-on-windows/



#3 bludgard

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Posted 27 June 2016 - 02:09 PM

Also... is this a Lenovo machine? If not... what are the specs on target machine?

Thanks



#4 ufc2084

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Posted 27 June 2016 - 09:24 PM

How long does the battery last on a full charge. Are we talking an hour or so, or a matter of minutes ?



#5 The-Administrater

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Posted 29 June 2016 - 07:29 AM

Was the command prompt tool used powercfg?

 

If you have Windows 8 or higher you can create a battery report using powercfg /batteryreport

 

http://www.howtogeek.com/217255/use-the-hidden-powercfg-tool-to-optimize-battery-life-on-windows/

 

Yes, I use Win7.

 

Also... is this a Lenovo machine? If not... what are the specs on target machine?

Thanks

 

Its a HP Probook 6560. Specs here: http://www.bleepingcomputer.com/forums/t/617528/windows-doesnt-shut-down/#entry4022842

 

How long does the battery last on a full charge. Are we talking an hour or so, or a matter of minutes ?

 

It lasts over an hour, but it used to last for several hours.






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