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Life test of a nickel cadmium battery with a protection/reconditioning circuit

Technical Report ·
OSTI ID:5762084

Results are discussed for a Ni-Cd battery test over a period of 8 years, 2 months and 44,213 simulated low Earth orbits. The battery cells were protected against overdischarge and reversal at discharge rates up to 25 amperes (1.25C) by a battery protection and reconditioning circuit. The circuit performed flawlessly during the test, and proved its value, both as a battery reconditioner and a cell protection device. Battery cell failures are also discussed. The test demonstrated the viability of using Ni-Cd batteries at depth-of-discharge up to 25 percent for over 5 years in a low Earth orbit.

Research Organization:
National Aeronautics and Space Administration, Huntsville, AL (USA). George C. Marshall Space Flight Center
OSTI ID:
5762084
Report Number(s):
NASA-TP-1873
Country of Publication:
United States
Language:
English