Goal Zero Sherpa 50

    Photo: Goal Zero

Hook up the Sherpa 50’s paperback-size solar panel to the two-pound power pack and inverter, set it in the sun, and in six to 10 hours (we did it in four with full rays) you have enough juice to power your laptop for three hours or a tablet for 15. Smart: The power pack charges by wall outlet in just three hours.

Brand: Goal Zero $510

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