My Macbook has recently entered a state where the battery no longer charges. Currently the battery is reporting 25% charge when not plugged in. When plugged in, the bar at the top reports (Not Charging), though as long as I keep it plugged in it runs without running down the battery.

Any idea why this happened? And is there a way to fix it without just replacing the battery?

  • How old is the battery? It's not uncommon for laptop batteries to lose the ability to hold a charge after 20-24 months. Aug 13, 2009 at 17:40

3 Answers 3


This happened to me less than a month ago. It was my MagSafe adapter, not my battery that was failing. Try finding a spare adapter, or bring it into an Apple Store and test their adapters. Hopefully they'll replace it for you.

  • And if you do have to buy a new MagSafe adapter (e.g. if Apple doesn't provide a warranty replacement), go for the big 85W monster over the minimal 60W MacBook charger. They're the same price, and both will charge a regular non-pro MacBook, but the 85W can charge a pro and tends to run cooler when attached to a regular non-pro MacBook.
    – Kevin L.
    Aug 14, 2009 at 5:14

How old is the Macbook/battery?

Batteries typically have a full lifespan of about 1 year, and they usually fail to retain charge at about about 2 years.

If this is the case, then you will just have to go to an Apple Store to get the battery replaced.


Try resetting the System Management Controller (SMC), as described in this Apple KB article: http://support.apple.com/kb/HT1411

I will say, though, that the same situation has occurred to me in the past (twice, actually) and resetting the SMC didn't help -- I ended up having to replace the battery.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.