Investigation of charging methods for nickel--cadmium batteries. Technical report. [-20 to +100 F]
Sealed nickel--cadmium batteries, each battery consisting of five 4.0-Ah D cells manufactured by General Electric Company, showed little difference in charge acceptance between the pulse and constant current dc charging modes in a temperature range of -20 F to about +100 F. Above +100F maximum charge acceptance is attained at the 2C rate for both charge modes, while at temperatures below +40F the charge rate should be as low as C/10. Charge control by a pressure switch developed by General Research Laboratories proved to be highly practical for the sealed D-type nickel--cadmium batteries employed in this study. Memory, a phenomenon due to the formation of alpha-type nickelic oxide in the nickel cathodes of vented nickel--cadmium batteries, can be erased by occasionally draining the battery to about O volt per cell at the C/10 rate. (GRA)
- Research Organization:
- Army Electronics Command, Fort Monmouth, N.J. (USA)
- OSTI ID:
- 7280773
- Report Number(s):
- AD-A-016132; ECOM-4355
- Country of Publication:
- United States
- Language:
- English
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