Based on the well-known betavoltaic effect, a new nuclear battery, which uses a Schottky barrier, has been used in place of the more standard p-n junction diode, along with 147Pm metal film rather than Pm2O3 oxide, as in the commercially available Betacel. Measurement of absorption, conversion efficiency, thickness, etc., as functions of resistivity and other cell parameters, and assessment of performance are being researched to design a prototype battery.