The Goal Zero 32001 Lighthouse 250 Portable Battery Charger, USB Power Hub and Lantern is a great device to take along on any trip as it is multi functional. Great for emergencies, it features a compact design with legs that can be folded for portability. Users can change brightness levels to save the power, which has a max run time of 48 hours on low setting. It can be charged using Goal Zero solar panels (not included), USB charging, or turning the crank manually.