My battery stays at 99% even after being unplugged for over an hour. Then it will die without any warning (still saying 99% charged). It also says not charging under battery life even when plugged in.

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Level 1

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Battery Information:

Model Information:

Serial Number: W03220PQTE1LA

Manufacturer: SMP

Device name: bq20z451

Pack Lot Code: 0000

PCB Lot Code: 0000

Firmware Version: 0201

Hardware Revision: 000a

Cell Revision: 0165

Charge Information:

Charge remaining (mAh): 5424

Fully charged: Yes

Charging: No

Full charge capacity (mAh): 5470

Health Information:

Cycle count: 48

Condition: Normal

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 12507

Posted on Jan 3, 2014 6:15 PM

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Answer 1

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Level 7

34,978 points

You may have to see about recalibrating the battery...

•Apple Portables: Calibrating your Computer's Battery for best performance

But if the system management controller has corrupted you may need to reset it...

Learn to identify if this would be a path to consider, as there are other options first.

•Intel-based Macs: Resetting the System Management controller (SMC)

Some other settings are hiding in places such as NVRAM (PRAM in older Mac)

so you may go through a few things to sort this out. Or, Troubleshooting.

Good luck & happy computing! 🙂

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