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Q: is 89w charger okay woth MBA? ild one is 45w and its busted now.
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Oct 8, 2014 12:14 PMby dominic23,It is okay to use 85 watts charger.
Power Adapter/ cord wattage
“Power adapters for Intel-based Apple notebooks are available in 45W, 60W, and 85W varieties. Although you should always use the proper wattage adapter for your Apple notebook, you can use an adapter of a higher wattage without issue.”
http://support.apple.com/kb/HT2346
Best.
