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Characterization of the 20-Ah nickel--cadmium cell used for energy storage on the Orbiting Astronomical Observatory

Technical Report ·
OSTI ID:7088375

Tests were conducted on 20-Ah sealed nickel--cadmium cells to evaluate initial and long-term performance at various charge rates, temperatures, and voltage-control levels. An average ampere-hour recharge of 103 percent per orbit at 13 C was able to maintain cell capacity; required watt-hour recharge on an orbital basis was 8 to 10 percent greater than required ampere-hour recharge. Cells exhibited an early life burn-in characteristic. A discharge after periods of repetitive cycling yielded two voltage plateaus, which were temporarily eliminated by the discharge.

Research Organization:
National Aeronautics and Space Administration, Greenbelt, Md. (USA). Goddard Space Flight Center
OSTI ID:
7088375
Report Number(s):
N-73-11040; NASA-TM-X-66093; X-761-72-330
Country of Publication:
United States
Language:
English