The best solution is the Hyper Juice unit. It has a large battery, and plug for 12 volt as well as 110 volt charging and directly running these Macs from a cigarette lighter plug. The unit we have is the HyperJuice Magic Box. You do have to cut up a some power unit to use the patented magnetic coupling for the Mac Book or air. There are cheap cords available. As I recollect we have a hundred watt battery, which also has USB output ports as well as the magsafe connector--12 volt or 110 volt input to charge the battery and /or run the lap top. It will recharge an I phone 19 to 20 times--an I pad Air several times, and the MacBook Air several times.
Bob Austin
The best solution is the Hyper Juice unit. It has a large battery, and plug for 12 volt as well as 110 volt charging and directly running these Macs from a cigarette lighter plug. The unit we have is the HyperJuice Magic Box. You do have to cut up a some power unit to use the patented magnetic coupling for the Mac Book or air. There are cheap cords available. As I recollect we have a hundred watt battery, which also has USB output ports as well as the magsafe connector--12 volt or 110 volt input to charge the battery and /or run the lap top. It will recharge an I phone 19 to 20 times--an I pad Air several times, and the MacBook Air several times.
Bob Austin
