Goal Zero Sherpa 50 Power Pack Charge the Sherpa 50 in 2-3 hours from wall, or 4-6 hours from car, or 5-10 hours from solar (Nomad 13 solar panel sold separately) Sample run times: laptops 1-3 hours, tablets 15 plus hours Includes the bolt-on inverter that converts the Sherpa 50 into a portable wall plug (110 Volt US plug) Compact and lightweight - less than 1.5 pounds Includes Sherpa 50, wall charger, and bolt-on inverter