By Andrew Liszewski
One of the trade-offs to carrying the slim and svelte MacBook Air is that you can’t swap out the battery with a backup if you’re away from a power source. But that doesn’t mean you’re completely out of luck. Looking like something purchased from a Radio Shack back in the 80′s this external power source for the MBA runs on 8 x C-cell batteries. They’re not as easy to find as AA’s in an airport setting or convenience store, but if you manage to find enough they’ll give you an extra 2 hours use of your laptop.
When full the backup weighs in at around 2.2 pounds, so carrying it around as a ‘just in case’ power solution pretty much ends up cancelling out how light the MacBook Air feels. And besides the fairly expensive $247+ price tag, it can only be used with Apple’s MagSafe Airline Adapter, which is an extra $50. So in this case it’s almost cheaper and easier to carry a fully charged netbook to fall back on when your MBA is dead.