I also welcome it as a step towards UL hiking gear that also includes a charging function, or basecamp/car/canoe gear that isn't so portable but can charge at a higher rate. I used to supply parts to a company that made industrial zero-maintenance TEGs for supplying power to remote monitoring stations and such. Think weather stations in Siberia, gas/oil well monitoring in Alaska, or radio repeaters on a ridge line, accessible only by helicopter. One site switched from a diesel generator that needed refueling every week and constant maintenance and breakdowns, to a propane powered TEG that needed refueling every 8 months and no maintenance at all. These were neither small or particularly portable devices, but the capability is absolutely there, it just needs to be refined and optimized for this use. Look at any technical innovation that's come along, from the wheel to the steam engine to the computer to the stove. Again, not an expert, but I can't think of a single instance where the first product on the market was as good as the ones that have had several years and generations of development. We are fortunate that a device that can make lightning from fire is so ho-hum available that we shrug and go "tut tut, not good enough!" This is a good step in the right direction, and I'm very thankful it exists. I look forward to seeing what the future holds.