Sometimes you're away from a power supply longer than your battery will allow you. It'd be nice to have a swapable battery but Apple seems to be going away from that idea in its latest product offerings. What to do? One (bad) option is carrying around a heavy UPS. A better option just came up:
HyperMac is offering an external battery with Apple's MagSafe connection. According to their website, this adds up to 32 hours of usage time. Official times and real times sometimes aren't always the same.
Users can check the HyperMac battery level an
