A new contender has emerged in the world of backcountry power generation. The Tegstove charges while it heats and stores electricity for use later. The company is calling it the most efficient of its kind.

The Butane-powered stove stands on a tripod that folds into a compact cylinder. It uses standard butane canisters available at outdoor or hardware stores. As the stove is running, it also charges an internal battery so you can charge while you cook.

The “most efficient” claim comes from a design that wastes very little heat, the company cites. [...]