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White rectangular power adapter brick with attached cable and MagSafe connector

Battery Technology Inc.

Battery Technology Inc. AC-1545MAG2 45 W 14.9 V power adapter

SKU CH-5PGF-SF375 MPN AC-1545MAG2

45 W 14.9 V adapter compatible with Apple MacBook Air OEM part MD59LL/A, includes 24-month warranty

  • 45 W output charges MacBook Air efficiently
  • 9 V DC matches original MD59LL/A specification
  • 05 A current delivers stable power supply
  • 24 month warranty covers the adapter

45 W 14.9 V adapter for MacBook Air

This 45 W AC adapter delivers 14.9 V DC at up to 3.05 A and matches OEM part MD59LL/A. It is built for Apple MacBook Air models that use this specification. The unit is supplied new and carries a 24-month limited warranty from the manufacturer.

Suits owners needing a direct replacement

Buyers who require a higher-wattage supply, a different output voltage, or a connector for another laptop family should look at an alternative adapter. The fixed 45 W rating and 14.9 V output limit use to compatible MacBook Air systems only.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $63.99
Pricier than about 84% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Brand nameBTI
Size & build
Shipping weight0.45 kg
Package size142 × 124 × 51 mm

Questions about this item

Does this adapter work with a MacBook Air that uses the MD59LL/A part number?

Yes, it is compatible with Apple MacBook Air models that use the OEM part number MD59LL/A.

Will this 45 W adapter charge a MacBook Air while I am using it for typical tasks?

It delivers up to 45 W at 14.9 V and 3.05 A, matching the original specification for supported MacBook Air models.

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