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Eagle012
1 Copper

XPS 15 the battery when at 20% drop immediately at 6%

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Hello, I have a XPS 9550 laptop that have almost a year of life. In the recent weeks the battery when arrive at 20% of charge suddently drop to 5% without a good reason (during play a mp4 or during write with MS Word for example, CPU is costant and there are no heavy operation).

The diagnostic test is passed (with elapsed time of 00:00:00 in report, is it normal?) and the battery health is at 88%, it have only 33 charge cycles because, when I can, I usually use the laptop with the charger.

I've writed at Dell Suppot (I have the premium warrantly for another two weeks), I sent the requested screen of the battery informations from the bios and executed the istructions, the answer was that battery is ok and all is normal (in this screen the bios report that battery status is "Excellent").

This is a graph of the battery report generated from Windows when you can see the last drop from almost 20% to 6% (is also reported that design capacity is 84 mWh and full charge capacity is 74 mWh):

edit: I trying a Battery Calibration with full discharge

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Eagle012
1 Copper

RE: XPS 15 the battery when at 20% drop immediately at 6%

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After a battery calibration the situation seems improved, but now the battery health value is 85%.

Thanks for answer.

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Community Manager
Community Manager

RE: XPS 15 the battery when at 20% drop immediately at 6%

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Hi eagle012,
Thanks for posting.
Apologies that your battery is not performing as expected.  Normally batteries last about 1 year to 1 1/2 years.  It's great that yours is lasting, but it's about to it's end.  

Here is some information from the Dell knowledge base that you may find helpful.


Dell-Robert P
Social Media Support
#IWork4Dell
To help us troubleshoot, please send us the Dell service tag number via a private message
Would you like to be a Dell Community Rockstar?


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Eagle012
1 Copper

RE: XPS 15 the battery when at 20% drop immediately at 6%

Jump to solution

After a battery calibration the situation seems improved, but now the battery health value is 85%.

Thanks for answer.

View solution in original post