Perfect for campers and trekkers: The Campstove Dry Fuel Stove by BioLite. It is practically powered by burning wood that can be found practically everywhere. You are therefore not relying on gas or other types of fuel. When fully heated, it can boil a liter of water in approximately 4:30 minutes. When it looks like the fire is going out, simply re-fill it with wood from the top. The Campstove dry fuel stove as an integrated loading dock which can be used to charge small electronic devices like smart phones or cameras while you wait for your water to boil or your food to cook. The electricity is created by a turbine that is powered by the flow of warm air. It can be packed up quite small and won't take up any more space than a 1.5 liter bottle. That means the Campstove dry fuel stove is always on board and always at hand.