coz711

macrumors newbie
Original poster
Oct 11, 2019
3
0
I am having a problem with my laptop.
It started periodicallly shutting down automatically
with about 30% battery.
I noted the battery low warning and it shuts down.
Once plugged in it is at 30% and charges fine

Why?
 

TokMok3

macrumors 6502a
Aug 22, 2015
655
411
Maybe it needs a new battery. I have a Macbook similar as yours with a swollen battery and a delaminated screen I took it to the Apple Store and they replaced the screen and the battery for free. They have a program for that.
 
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Howard2k

macrumors 68040
Mar 10, 2016
3,043
2,253
Almost certainly a bad battery. I would install coconut battery and see what it says.
 
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Howard2k

macrumors 68040
Mar 10, 2016
3,043
2,253
It's a free program, it will give you diagnostic information on your battery.

Ensure your MacBook is fully charged, install it from here:

then show us how it looks.
 
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Woodcrest64

macrumors 65816
Aug 14, 2006
1,209
386
My 2012 did that after 4 years. It would shut off around 15-35%. I had the battery replaced and its been fine, though it will likely start happening to me again in the next year or two. The iPhones do something similar too when their batteries get that old unless you turn on that performance throttle battery saving feature. Anyway, I'd replace the battery if I were you.
 
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