Alkaline battery evaluation

Author / Creator

Luke, I. F., author

Available as

Online

Summary

This report covers the first period of an alkaline battery applied research and failure analysis program. The purpose of this program is to establish a broad base of battery test data for use in th...

This report covers the first period of an alkaline battery applied research and failure analysis program. The purpose of this program is to establish a broad base of battery test data for use in the design of the electrical system of future space vehicles and to determine the actual failure mechanism of all new battery systems under varying environmental and cycle-life conditions so that improved space batteries can be developed. Another objective is to determine techniques and/or materials to prevent these failures while at the same time increase the usable watt-hours-per-pound capability and cycle life of the battery. To date, cycle-life tests have been conducted on one type of 12 ampere-hour, sealed, nickel-cadmium cell in two temperature environments and four depths of discharge. Initial results in in the program show that: (1) Cell cycle-life with shallow discharges is considerably longer than cycle-life at deep discharges and (2) Cycle-lfe is reduced by high ambient temperatures. The program will include as future work evaluation of silver-cadmium and silver-zinc type cells.

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