Still in need of more on the go power even with the new bulked-up battery life of the Macbook and Macbook Pro? The HyperMac ($200-500) from Sanho is an external battery that will never leave you worrying about how much time you have left. It can power any MagSafe Macbook or Pro for up to 32 hours. There are four different sizes to choose from each of which are made of the same metal as the new unibody Macs.