I just thought I would let you know that the power gorilla and solar gorilla will actually charge a Macbook. However, you do have to purchase an Apple Magsafe Airline Adapter to connect the charger to your Macbook.
Cheers!

This charger is great! I live in Canada and there haven't been many sunny days since I received this about 3 weeks ago but it has worked wonderfully. It takes a lot longer to charge without direct sunlight but it will still slowly charge. My only disappointment is that although there is a piece that connects to my Motorola Krzr cell phone, a message appears on my phone indicating it is unable to charge... but it works great with both my first generation iPod (yes, I still have one - not quite ready to donate to a museum yet) and my iPod nano.
Cheers and Happy New Year!

This is an excellent item... works perfectly! I love the flashlight feature.