MacBook Pro 13" Battery

Question

Level 2

348 points

MacBook Pro 13" Battery

My MacBook Pro 13" 2.53Ghz is my favorite machine. It is a few months old, has 106 charge cycles, but after a battery calibration it shows its full capacity to be down to 83%! That's a steeper decline than I have noticed with any other machine.
I upgraded the drive to a 750GB WD, but that should not impact the rating.

It is used mostly on battery, with occasional long use to battery warning, but it is always full recharged.

What is the threshold for Apple replacement? This is a steep decline from the rated 6-7 hours - and it is noticeable.

-- Harald

Battery Information:

Model Information:
Serial Number: W09310UQ3784A
Manufacturer: SMP
Device name: bq20z451
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0003
Hardware Revision: 0002
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 4133
Fully charged: No
Charging: No
Full charge capacity (mAh): 4858
Health Information:
Cycle count: 106
Condition: Normal
Battery Installed: Yes
Amperage (mA): -1037
Voltage (mV): 11941

MacBook Pro 13", MacBook Pro 2.8GHz, Mac Pro 3Ghz Quad, Mac mini 1.42Ghz, others, Mac OS X (10.6), iPod Nano 1, 2, 3, 5, 5G, 3G, 1G, minis, shuffles...

Posted on Feb 15, 2010 9:25 AM

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Answer 1

eww

Level 9

53,028 points

Feb 15, 2010 9:38 AM in response to HaraldS

Keep using it. If it gets down to less than 80% and stays there before you have 1000 cycles on it, that's the time to take it in for testing and request a replacement. You aren't there yet.

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Answer 2

JasonFear

Level 5

4,965 points

Feb 15, 2010 2:24 PM in response to HaraldS

Hi HaraldS,

It probably wouldn't hurt to get the machine looked at, even for peace of mind. There's no harm in making a Genius Bar appointment for a formal opinion. You're about 600 mAh lower than estimated full charge capacity of the 13" MacBook Pro battery. While not terrible, considering you're at 100 cycles it's not ideal either. My 13" MacBook Pro is at 94 cycles and is still within 200 mAh of the original FCC of the machine.

I'll agree with eww, though, that you're at less than 1000 cycles and still within the "greater than 80%" specification that Apple has in place.

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Answer 3

Mar 15, 2010 8:38 PM in response to HaraldS

I have the sane exact computer as you, except for the HD upgrade. At 6 months old and about 118 cycles i had almost the same mAh, i took it to Apple and they replaced it free of charge in about An hour. Just schedule a genius appointment. They will just connect your computer to An iPod that will run some diagnostic tests and then offer to replace the battery 🙂 Good luck

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