The ChugPlug Adds a Backup Battery To Your MagSafe Power Adapter

If you own a smartphone and actually use it on a daily basis, there's a good chance you've always got a backup battery close at hand. But what about your MacBook? Instead of desperately hunting for a plug when its battery life dwindles, Lenmar's new ChugPlug is designed to integrate with the MagSafe adapter giving you a few extra hours of precious power.

The $160 ChugPlug is compatible with both 45W and 60W MacBooks, and promises to give the MacBook Air an extra four hours of battery life, while the MacBook Pro would gain a still respectable three hours of use. The form factor is still a bit clunky—as is any backup battery—but the clever way it's designed to integrate with your MagSafe adapter makes it a little easier to carry. [Lenmar via Acquire]