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ParagJain

macrumors 6502a
Original poster
Jul 24, 2011
590
141
Hello friends -

I need some help. A friend of mine has a 2019 model macbook air. Seems, out a blue, the device is unable to detect battery.

When I look at the Battery under System Preferences it doesn't show battery.
When I look at Power Settings in About Mac - System Information, battery is not shown at all.

I've already reset of NVRAM and SMC but, still nothing changed.

When I boot using the usb c cable, kernal_task is always 200 or 300% making the device crawl even to do simple tasks like open finder.

Any additional suggestions that could help me to find the issue with Battery ?
Or
Is this looking more like a hardware issue ?

thank You.
 
remove the bottom cover.
Inspect the battery for possible swelling (always a good thing to check whenever you first open a laptop...)
Disconnect battery connector.
Plug in the power adapter, and try to boot. obviously, won't see the battery if it is not connected :D
Shut down. Disconnect the power adapter. Re-connect the battery, then plug the power adapter back in.
Restart, holding the Option-Command-P-R. Wait for the video to reset (maybe a boot tone (?), and continue holding the same 4 keys for two more resets. Should take less than a minute. Release the keys, and let it boot normally.
After it boots, go into System Preferences, and double-check that the boot drive is selected (probably will not be set after the reset).
Shut your MBAir off. (Don't restart, just shut down.)
Wait about a minute, then press and release the power button.
Wait for your MBAir to boot.
Is the battery recognized now?
If not, I would likely try to reinstall the system, just on the off-chance that this is a software issue.
(I keep all system installers at hand, handy for just this kind of thing)
Takes 30 minutes or so, and you will know pretty quickly if that was a fix -- , or you need to try replacing the battery.
Maybe a trip to an Apple store for whatever diagnostics they do these days.
 
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remove the bottom cover.
Inspect the battery for possible swelling (always a good thing to check whenever you first open a laptop...)
Disconnect battery connector.
Plug in the power adapter, and try to boot. obviously, won't see the battery if it is not connected :D
Shut down. Disconnect the power adapter. Re-connect the battery, then plug the power adapter back in.
Restart, holding the Option-Command-P-R. Wait for the video to reset (maybe a boot tone (?), and continue holding the same 4 keys for two more resets. Should take less than a minute. Release the keys, and let it boot normally.
After it boots, go into System Preferences, and double-check that the boot drive is selected (probably will not be set after the reset).
Shut your MBAir off. (Don't restart, just shut down.)
Wait about a minute, then press and release the power button.
Wait for your MBAir to boot.
Is the battery recognized now?
If not, I would likely try to reinstall the system, just on the off-chance that this is a software issue.
(I keep all system installers at hand, handy for just this kind of thing)
Takes 30 minutes or so, and you will know pretty quickly if that was a fix -- , or you need to try replacing the battery.
Maybe a trip to an Apple store for whatever diagnostics they do these days.
thanks, let me try with these, i hope i am able to resolve is using software rather than visiting apple store ..
 
remove the bottom cover.
Inspect the battery for possible swelling (always a good thing to check whenever you first open a laptop...)
Disconnect battery connector.
Plug in the power adapter, and try to boot. obviously, won't see the battery if it is not connected :D
Shut down. Disconnect the power adapter. Re-connect the battery, then plug the power adapter back in.
Restart, holding the Option-Command-P-R. Wait for the video to reset (maybe a boot tone (?), and continue holding the same 4 keys for two more resets. Should take less than a minute. Release the keys, and let it boot normally.
After it boots, go into System Preferences, and double-check that the boot drive is selected (probably will not be set after the reset).
Shut your MBAir off. (Don't restart, just shut down.)
Wait about a minute, then press and release the power button.
Wait for your MBAir to boot.
Is the battery recognized now?
If not, I would likely try to reinstall the system, just on the off-chance that this is a software issue.
(I keep all system installers at hand, handy for just this kind of thing)
Takes 30 minutes or so, and you will know pretty quickly if that was a fix -- , or you need to try replacing the battery.
Maybe a trip to an Apple store for whatever diagnostics they do these days.
tell your friend to go to service center
 
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