It can be inconvenient having to lug around your power adapters everywhere you go. There’s now an affordable option to have an extra power adapter for your Mac as a replacement or as a backup option for your office or when you travel.

Groupon is offering Apple MagSafe 2 Power Adapters starting at $29.99 +$4 shipping for the 45W Macbook Air. The 60W Macbook Pro version goes for $34.99 shipped and the 85W goes for $39.99 shipped. That’s far below the $79 Apple charges for the same adapters and the lowest we can find for them. This offer is for brand new adapters and they come with 1-year warranty from Apple. Groupon also offers free returns on this purchase.

You can use this handy guide to make sure these power adapters are compatible with your MacBook.  expand full story