Accession Number : AD0748253

Title :   Rate of Discharge of Accelerated Life Tests of Nickel-Cadmium Cells.

Descriptive Note : Special technical rept.,

Corporate Author : BATTELLE COLUMBUS LABS OHIO

Personal Author(s) : McCallum,John ; Roeger,Earl A. , Jr. ; Miller,Gerald H.

Report Date : AUG 1972

Pagination or Media Count : 50

Abstract : Special demountable cells were designed, constructed, and tested with rates of discharge as the primary independent variable. Duplicate experiments were performed with groups of five demountable cells. Separate groups were discharged at C/2, C, 2C, 4C, and 8C rates. One experiment maintained uniform temperatures of about +25C in all cells. The other experiment had an environmental temperature of +25C, but internal heaters were maintained at +40C. Otherwise, all known variables were held constant. Both groups of cells degraded at a higher rate in measured qualities at higher rates of discharge. Results are discussed.

Descriptors :   (*STORAGE BATTERIES, ACCELERATED TESTING), (*SPACECRAFT COMPONENTS, STORAGE BATTERIES), TEST METHODS, NICKEL, CADMIUM, STRESSES, RELIABILITY(ELECTRONICS), ALKALINE BATTERIES

Subject Categories : Electrochemical Energy Storage
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE