Two years ago, BioLite introduced its CampStove, the first portable cooker to convert waste heat into electricity. The stove produced enough power to recharge a phone—perfect for an overnight in the woods—but lacked the juice to allow a whole campsite to go off the grid. The new BaseCamp generates more than double the electricity of its compact predecessor—enough to power strings of lights, charge GoPros, and furnish other comforts. Engineers overhauled the unit’s thermo-electric generator (TEG), incorporating a new fan design that delivers more hot air, increasing the TEG’s output. The electricity created powers the fan while charging a device plugged in via USB (or an onboard 2,200-milliampere battery). A side door lets campers feed the flame, so the lights will last as deep into the night as the campers do.