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Laboratory Shelf Life Tests of Primary Reserve Magnesium Batteries for Emissive Expendable Electronic Countermeasure Devices
Final rept. 1 Apr 1971-15 Jul 1974
AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
This report presents results of shelf life testing of automatically activated, magnesium anode batteries developed for aircraft expendable electronics countermeasure ECM application. Model LSP2055 batteries stored at 70F for over 12 months continuous demonstrated design service life as did one battery that was desk stored at about 75F for 45 months. However, Model LSP2055 batteries stored at 130F for 12 months continuous and at 110F for 12 months continuous failed to give minimum service life. These high temperature stored batteries lose water from their electrolyte via evaporation resulting in a too acid electrolyte. Model LSP2021 batteries, similar in most respects to Model LSP2055 batteries, demonstrated their specified discharge life following 6 years desk storage at about 75F. Although some mechanical causes necessitated some batteries to be manually activated, the general conclusion, based on fresh battery performance and shelf life test results, is that Model LSP2055 battery is a suitable power source for aircraft ECM applications.
APPROVED FOR PUBLIC RELEASE