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Near Earth Asteroid Rendezvous flight battery performance-boost charge response of super-NiCd following extended trickle charge flight storage

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3 Author(s)
J. E. Jenkins ; Appl. Phys. Lab., Johns Hopkins Univ., Laurel, MD, USA ; J. W. Hayden ; D. F. Pickett

After 14 months of in-flight trickle charge, the flight battery of the Near Earth Asteroid Rendezvous spacecraft was boost charged in preparation for a possible discharge. During the boost charge, anomalous current-voltage behavior was observed, prompting the ground test of flight-lot cells that had been in night life simulation. The night boost regime was duplicated on the ground cells and exhibited a similar current-voltage response. Ground test cells were then discharged for capacity measurement demonstrating no capacity degradation after flight simulation. The anomalous current-voltage behavior is attributed to nonfaradaic charging and depolarization from boost charging

Published in:

Battery Conference on Applications and Advances, 1998., The Thirteenth Annual

Date of Conference:

13-16 Jan 1998