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Tony T Author

Level 1

109 points

MBA shutting down with no low battery warning

Recently my MacBook Air (13-inch, Early 2015, OS 10.14.6 Mojave) has developed an annoying issue whereby the battery gets down to around (on average) 20% and the MBA simply blanks out with no warning; no "you have x minutes battery left". Most irritating when I'm in the middle of working and the machine simply conks-out.

On checking the battery condition (alt click on battery indicator) it displays "Normal".

I've tried resetting the SMC (System Management Controller) numerous times to no avail; no change, still blanks out at ca 21%.

I took the MBA into my local Apple shop and the “genius” ran an in-depth hardware check. The MBA came up with no faults and a healthy battery. Their advice was to erase the HD and do a new system install.

I backed-up and did precisely this, but low-and-behold the MBA is doing exactly the same; blanking out at ca 20-25% battery.

ANY advice most welcome.

Posted on Jan 13, 2020 8:14 AM

Top-ranking reply

Tony T Author

Level 1

109 points

Posted on Jan 27, 2020 2:49 AM

In case anyone else is experiencing this problem of random shut-downs, I can now confirm that the battery in my MBA was indeed the root of the problem.

This is in spite of the battery indicator reporting a "NORMAL" battery condition and in spite of taking the MBA to a local Apple "Genius" to check with a result of "no hardware issues", it turns out that battery was the culprit.

New battery installed (dead easy) and my trust MBA has a new lease of (battery) life and NO impromptu shut-downs.

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MBA shutting down with no low battery warning

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