Behavior is the following.
I work with the battery connected, at 99%.
When I disconnect and work outside, very soon the
computer shuts down as if the battery was low, even
if it is at 70%. I need to reconnect the battery,
which charges up to 99%.
It is an Apple refurbished machine.
Any hint ?
Thanks,
-JG
Jean Guillaume Pyraksos wrote:
Behavior is the following.
I work with the battery connected, at 99%.
When I disconnect and work outside, very soon the
computer shuts down as if the battery was low, even
if it is at 70%. I need to reconnect the battery,
which charges up to 99%.
It is an Apple refurbished machine.
Any hint ?
Did you follow Apple's instructions when you first got the MacBook to calibrate the battery? If not, try that now.
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Behavior is the following.
I work with the battery connected, at 99%.
When I disconnect and work outside, very soon the
computer shuts down as if the battery was low, even
if it is at 70%. I need to reconnect the battery,
which charges up to 99%.
It is an Apple refurbished machine.
Any hint ?Did you follow Apple's instructions when you first got the MacBook to calibrate the battery? If not, try that now.
I did not. Now, it does not work as the battery shuts down very quickly. Should I reset the PMU ? Can it hurt ?
-JG
Previously, Jean Guillaume Pyraksos wrote:
Behavior is the following.
I work with the battery connected, at 99%.
When I disconnect and work outside, very soon the
computer shuts down as if the battery was low, even
if it is at 70%. I need to reconnect the battery,
which charges up to 99%.
It is an Apple refurbished machine.
Any hint ?
if the machine suddenly shuts down when the battery has a 70% charge, then the battery most likely has a failed internal cell which caused the whole battery pack to drop below the necessary voltage to run the computer.
if it is under warranty (and refurbished ones have a full one year), then get it replaced. otherwise, you'll need to buy a new battery.