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Jones1403
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Notebook battery calibration wrong, but cannot calibrate

HP ProBook 450 G1
Microsoft Windows 10 (64-bit)

hello all,

 

the laptop has a problem that the battery is not calibrated properly. when, according to windows, there is still about 50% of capacity left, the laptop shuts down immediatly. However the runtime up until that moment is still about the same as the original runtime. Thus I figured I needed to calibrate the battery. I,ve run the HP diagnostics utility to check the battery condition and it told me to replace the battery, without the option to calibrate it. One thing i noticed, was that the reported full charge capacity was way higher than the original capacity. About 66% higher.

 

I then used the manual way to calibrate the battery from here: http://support.hp.com/us-en/document/c04700771

I even had to run the extended hard disk test twice to drain the battery completely

After the battery drained, I charged it fully without touching the laptop.

 

I then ran the diagnostics utility again. Still the same result. As you can see in the attached photo, the reported full charge capacity and remaining capacity are way higher than the 4400mAh original design capacity.

 

IMG_1205.JPG

 

So I still believe the battery is OK but the callibration is way out.

 

Any thoughts from you, on what i can try/do before actually replacing the battery as runtime is still very good.

 

Thanks,

Jona

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Notebook battery calibration wrong, but cannot calibrate

Your notebook battery is three years old. 

 

It is time to replace it with a new compatible battery. 

 

There is only so long that a battery will be serviceable.  Three years is a pretty good service life for a battery.

 

Are you aware that there is only a one year warranty on notebook batteries, regardless of manufacturer? 

 




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Jones1403
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Notebook battery calibration wrong, but cannot calibrate

Hello Enrico,

 

Thanks for your quick response. However I'm not convinced the battery is bad. As runtime is still like new. and looking at the real numbers I see the battery still holds about 4200mAh.

 

Althoug 3 year is indeed a pretty good service live for a battery, I think battery usage is counted in cylces. This battery has about 228 cycles. Reading up on it on the internet, they say these batteries normally go up to about 300 cycles. So it appears that this battery runs a bit short of it's standard life.

 

Warranty is indeed out of the question as the battery is indeed 3 year old. 😄

However, European law requires the manufacturer/distributor of electronic equipment to have at least a 2 year warranty on hardware malfunctions. Not that it makes any difference in this case.

 

Thanks again for your response. I'm going to try again calibrating the battery, but if nothing indeed helps, it seems like i'm going to have to replace the battery.

 

Jona

 

 

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Notebook battery calibration wrong, but cannot calibrate

Well, I suppose one can convince oneself of just about anything. 😉

 

You will end up purchasing a new battery. I think you know that already.




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