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HT2346: Intel-Based Apple notebooks: Identifying the right power adapter and power cord

Learn about Intel-Based Apple notebooks: Identifying the right power adapter and power cord

HT2346 What happens when I use a 45w Air power Adapter on my MacBook?

571 Views 2 Replies Latest reply: Jun 16, 2012 11:14 PM by Michael King RSS
Michael King Level 2 Level 2 (230 points)
Currently Being Moderated
Jun 15, 2012 5:42 PM

Thru an excess of travel, I'm separated from the 60W adapter that powers my MacBook for a few days. I do have a spare 45W Adapter for an Air, which plugs in and the green light comes on. The MB says "Not Charging" in the battery status if it's on but it doesn't say "Abort, Abort, Danger Will Robinson" or any thing dire. Of course I can't tell if it is or isn't charging while in Sleep except by waiting a while. I will be reunited with the proper adapter in a few days, so I'd rather not buy a replacement. Can anyone comment on the potential for this unusual union? Seems like I can't be the first guy in this situation?


Will 45W adapter charge the battery while sleeping? Is there enough power to run the MB but not enough additional to charge while running (I can live with that)? Is the union likely to have a bad outcome?



MacBook 2.0GHz Core 2 Duo, Mac OS X (10.6.8), MB Air, iPhone 3g, AEBS Gig, 3G ipod, Windows-free home since 19
  • Ralph Landry1 Level 7 Level 7 (28,815 points)

    There will not be enough power to run the MB, but if the MB is shutdown and then the charger attached it may charge though very slowly.  Most advice is you can use a more powerful charger but not less powerful.  If you don't see any increase in battery charge then it is not charging.


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