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Level 1

0 points

Battery service Maverick

Hi all,

like many people I see a Service Battery message since I have installed Maverick on my Mac Book Pro (eraly 2011).

I displayed the system report and was really surprised: the battery full charge capacity is down to 796 mAh where it should be something like 6900 mAh!

Attached are the screenshot from coconutBattery and system report.

The number of cycle for the battery is only 292.....

Even with a bad usage and whatever I will do, the full charge capacity can not go so low. it's less than a removable battery used in toys!

I just installed the latest update for Maverick (10.9.2) and nothing changed.

Any suggestion? Someone from Apple to help?

MacBook Pro, OS X Mavericks (10.9.2)

Posted on Mar 1, 2014 2:53 AM

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7 replies

Level 6

12,105 points

Mar 1, 2014 3:11 AM in response to flopi

The battery needs to be changed. It's worn out. Doesn't really matter what the cycle count is. All batteries wear out over time. Each batttery is different. Some last a long long time, others not so long.

Yours need to be changed.

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Level 1

0 points

Mar 1, 2014 4:40 AM in response to LowLuster

hey, guess what, I just reopened the system report and now the ChargeRemaining is back to 1139 mAh after a SMC reset.

My steps to fix this:

- update Maverick to 10.9.2

- 3 times SMC reset : http://support.apple.com/kb/ht3964

- system report still displaying wrong charge remaining,

- wait one hour

- it's fixed

So definitely a software issue with a random problem because the way to fix this seems weird.

So now I will use the Mac Book Pro on battery until it reach 0% and hope it will continue to be OK.

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Level 6

12,105 points

Mar 1, 2014 4:43 AM in response to flopi

It still reads SERVICE BATTERY.

You need to have the battery changed. Full charge capacity of 1139 is 5000 (mAh) lower than the Design Capacity.

No number of SMC resets will fix a worn out battery.

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Mar 1, 2014 4:44 AM in response to flopi

Apple batteries in notebooks aren't supposed to run down to 0% - that will do nothing but harm the battery even more than it's already damaged.

You need to follow the instructions in Battery Health and have your battery serviced (replaced).

Clinton

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Level 1

0 points

Mar 1, 2014 4:50 AM in response to clintonfrombirmingham

I will perhaps not go to 0% but a least wait a little before pluggin again

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Level 1

0 points

Mar 1, 2014 4:57 AM in response to clintonfrombirmingham

Yes and still the Servie Battery message appears around 58%.

So the full charge capacity seems more realistic but the battery stills goes down very quickly.

After 15 min I am already at 45% charge.

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Level 9

60,033 points

Mar 1, 2014 4:59 AM in response to flopi

You need a new battery.

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Battery service Maverick

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