
Resilient Power for 20+ Years
City Labs, Inc. is the pioneering innovator of long-life (20+ years) NanoTritium™ batteries for microelectronics. The battery is resistant to varying temperatures and other environmental conditions due to the robustness of the tritium decay process.
Tritium is a radioisotope used as an illumination source for exit signs commonly found in schools, theatres, commercial buildings and aircraft.
Tritium has a half-life of 12.3 years, and it slowly sheds beta particles until it reaches a stable form. Tritium betavoltaic batteries are relatively benign compared to other forms of nuclear batteries. The radiation cannot penetrate a thin metal protective barrier, making it safe for commercial use.
Other radioisotope batteries rely on creating temperature differences for thermoelectric conversion. Betavoltaic cells, however, use similar principles to photovoltaic solar cells and use less tritium than thermoelectric generators. This lowers the operating temperature of batteries and improves charge consistency.
These batteries aren’t that large. They are designed with semiconductors and other small components that allow for compact and adaptable models.
Tritium betavoltaic batteries do not require frequent maintenance or event replacement.
The power output for tritium batteries is constant and resistant to extreme temperatures between -50º C and 150º C.
Download the spec sheet to learn about lifespan, operating conditions & more.