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My MacBook Pro is throwing me a message "Service Battery" and coconutBattery tells me I have 4007 mAh instead of 5450 mAh.

Is there a way to pump it back up or is that impossible?

I was looking around on the Internet but the Apple Store does not display a built-in MacBook Pro 13 inch battery.

Should I replace mine? And if so, where is the best place to look for since Apple does not have them theirselves?

Coconut Battery

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up vote 2 down vote accepted

Battery degradation is normal, and seeing that your battery is almost 4 years old has went through 820 cycles, you battery retention is still quite good. Degradation of battery is irreversible.

If you really want to get a fresh battery, you can take it to an Apple store. It'll cost somewhere around $150.

Apple replace defective notebook battery only within 3 years of purchase with AppleCare, so you wouldn't get that benefit.

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Can you tell me @Enrico why my MBP 13" is not in Apple's list on the site you've provided me? – Rob Mar 9 '13 at 16:02
@Robuust it falls under the general "Notebook Owners" heading. The link below that are for notebook that has replaceable batteries. They can just buy new batteries from those links. – Enrico Susatyo Mar 10 '13 at 13:49

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