Spansen: BARC Makes Critical Progress Developing Nuclear Batteries For India's Strategic Missions
江西纳米克热电电子股份有限公司--Biomass stove with thermoelectric generator, It can generate 5 watts power for mobile phone or battery charging and lighting during cooking
Radioisotope thermoelectric generator - Wikipedia
Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) : NASA RPS: Radioisotope Power Systems