Accession Number : AD0691710

Title :   CHARGING THE SILVER-ZINC SECONDARY BATTERY SYSTEM. PART I. FORMATION CHARACTERISTICS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Sulkes,Martin J.

Report Date : JUN 1969

Pagination or Media Count : 18

Abstract : Dry uncharged silver-zinc batteries exhibit a reverse voltage as high as 0.8 V/cell after filling with electrolyte. This negative voltage presents a problem with regard to initiating the first charge with chargers that have reverse voltage protection. The voltage-current characteristics of unformed silver-zinc batteries and the individual electrodes were determined. The unformed silver-zinc battery has the potential of 0.7 - 0.8 volts. The unformed battery is capable of supporting only limited currents before the voltage reaches zero volts. Therefore, short circuiting before charge and/or connection to an auxiliary power source will drive the voltage positive in a short time, permitting initiation of charge on a reverse voltage protected charger. If reverse voltage protection is not employed in the charger, the reverse voltage of an unformed battery will not support sufficient currents to damage the charger. (Author)

Descriptors :   (*STORAGE BATTERIES, BATTERY CHARGERS), (*ALKALINE BATTERIES, *BATTERY CHARGERS), ZINC, SILVER, TEST METHODS, ELECTRODES

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE