NDLI: Evaluation program for secondary spacecraft cells: acceptance test of eagle-picher 100 ampere-hour nickel-cadmium cells with auxiliary electrodes

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Evaluation program for secondary spacecraft cells: acceptance test of eagle-picher 100 ampere-hour nickel-cadmium cells with auxiliary electrodes

Content Provider	NASA Technical Reports Server (NTRS)
Author	Christy, D. E.
Copyright Year	1972
Description	Tests were conducted on a group of 29 cells for the purpose of removing from the life cycle program all cells found to have electrolyte leakage, internal shorts, low capacity, or inability to recover open circuit voltage above 1.150 volts after the cell short test. The test findings include the following: (1) All the cells exceeded the rated capacity of 103.5 to 119.0 ampere-hours on all three capacity checks. (2) All cells recovered above the 1.150 volt requirement after the cell short test. (3) The cells cannot be overcharged at the c/10 rate without exceeding 1.500 volts after approximately 12 to 13 hours of charge. (4) The resistance value necessary to provide maximum signal power across the auxiliary electrode was found to be 10 ohms. (5) One cell revealed a definite leak at the negative terminal.
File Size	1572375
Page Count	28
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19720015399
Archival Resource Key	ark:/13960/t2798xr0p
Language	English
Publisher Date	1972-03-10
Access Restriction	Open
Subject Keyword	Auxiliary Systems Leakage Electrodes Volt-ampere Characteristics Electric Potential Performance Tests Spacecraft Power Supplies Capacitance Nickel Cadmium Batteries Electrical Faults Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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