E6520 Owner's Thread

key should be on bottom of laptop - just re-enter to validate.

 

So, new problem - BATTERY WEAR

I've been reading up on the 'net about many people having reported battery wear problems incorrectly read by badly coded ACPI.

I've had my E6520 since Spring of last year, and my battery wear is already at 25%!!!! I find that very hard to believe considering my i8600c battery lasted for a couple of years at least before showing any significant wear.

So, anyone else have this problem? Anyone know how to get Win7/ACPI to *correctly* determine battery wear?

Many of the "calibration" programs out there don't seem to really help people - read this story here.

 

Remove the battery and look into the battery slot.

 

Does the battery last as long as when it was new?

 

Interesting article....

Conclusion
Hence, the battery wear and battery life problem can be attributed to the ACPI being badly coded, thus yielding a lower amount of battery life than anticipated. The ACPI is the source information for Windows Battery Miser, all third party programs, and is also correlated to the BIOS when conducting the calibration tool, which did not solve this problem either. The only workaround right now is it to uncheck the critical alarm, turning it off, so that you get the entire length of your battery life, but there are implications for doing so (such as not actually knowing when your battery will give out and losing work). The ACPI is the problem; companies need to test their products and coding to ensure problems like this do not happen!

 

guys,
thanks for guiding,
I used utility ABR for back up and reinstalling of activation.
worked beautifully.
opening battery door showed me sim reader.

which WWAN card is supported by our laptop?
I would prefer hspa card.

thanks.

 

Not according to Windows. I have the 9cell battery (which I actually like as it gives me a nice hand hold on the back), and I was easily getting 5+ hours on this battery. I also have the 3-cell extra battery, giving me 8+ hours which was sweet, but I don't always keep that one in. Anyway, battery wear programs now report a 25% wear on the battery after only 8 months and I get maybe 3-4 hrs before windows thinks my battery is about to drain away into nothingness....

I think I'm just going to disable the critical alarm/shutdown and see how long it actually lasts...

But my *real* question is how do I "reset" the computer to think the battery has a full charge? Is there a way of completely erasing/resetting the BIOS to think this is a brand new battery?

 

If we can Edit bios tables., we can do that.

 

Was that the 9-cell with the 3-year warranty or the 1 year warranty?

I have the 3-year warranty one and it shows 0.7% wear using HWINFO64.

General Properties
Device Name: DELL XV2VV15
Manufacturer Name: SMP
Serial Number: (xxxx)
Unique ID: (xxxx)SMPDELL XV2VV15
Chemistry: Lithium Ion
Designed Capacity: 87002 mWh
Full Charged Capacity: 86414 mWh
Wear Level: 0.7 %

Current Power Status
Power Status: On AC Power
Current Capacity: 87002 mWh (100.0 %)
Current Voltage: 12.567 V

That's what we used to do with the V1Jps over in the V1Jp lounge. I had a bad battery, they shipped me a replacement under warranty and it was good. Meanwhile, some other people seemed to have had to swap batteries multiple times and still not get a good one.

You don't. It's stored on the smart chip in the battery, not the BIOS. Whether it's because the BIOS is giving the chip faulty data or if the battery iself is bad, there isn't really a whole lot you can do about it short of trying another battery (you don't want to be opening the battery, either <= extremely dangerous). Older laptops used to have a battery recalibration utility in the BIOS which effectively has you charge and discharge the battery, but I haven't really seen any new laptops with that function... and probably with good reason: Li-Ion batteries shouldn't be deep-discharged due to the way the battery chemistry works. The smart chip inside protects users from trying to use it if it thinks its bad or might be dangerous to use.

Not sure how much wear it has to have before Dell would replace it under warranty, though I suspect the Power Manager's battery health indicator would probably be what they use as reference.

 

Good morning. To all of you.
I want to know which wwan card and where to get it?
I asked local dell chap, he is Doing email email to his team since one week.

I saw all cables and empty slot along with sim reader. So my curiosity is at peak.

Another note,
I Went through Samsung ssd magician program.
It's saying system is in non ahci mode.
I checked bios, it's running Intel rapid storage.
What shall I Do with this issue?
How shall I Convert system to Ahci mode without reinstalling windows?

Thanks guys,


Thanks.