If you have a job or pastime that involves bringing your laptop or other electronic goods outside and away from power outlets for a while, then Goal Zero has exactly what you need.
Goal Zero specializes in creating unique battery packs that give you power when there's no other way to get it around you. They sell battery units with different functions and watt ratings that go from $80 to $750. All power packs from Goal Zero can either be charged from home before you go out or with their solar panels. The solar panels will take about seven to eight hours for a full charge.
The top of the line Sherpa 120 kit from Goal Zero has the battery power of 70,000 AA batteries on a full charge so you should be good for a while.
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