My laptop shuts down suddenly at 30% battery when not charging. It does not show any warning. The screen turns black all of a sudden and I can only reboot after I've plugged in and started charging again. I have a Samsung NP350V5X - S01IN. I'm running Ubuntu 15.04. What should I do?
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1possible duplicate of How to change critically low battery value? – graham Jun 14 '15 at 14:19
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Maybe an end of life battery?
Check in the Bios (under boot options) if there is:
Smart Battery Calibration entry, then run it!
So restart and check the accuracy of the battery level, you can access it clicking the energy panel icon (the battery icon top right on the panel).
feligiotti
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Thanks! I'm almost 3 years late in answering :P Yes, it was an old battery and I did exchange it. It's fine now. – Sreyam Feb 21 '18 at 07:01