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Taking Advantage of Low Corrosion Alloys

Drew Heimer

Chance Sterling

Following up last year's paper "Impact of Alloy and Geometry on VLA Positive Grid Designs," this paper will look at how higher specific gravities will react in modern VLA cells. Historically a 1.215 specific gravity was required to achieve 20 years of life. Raising your specific gravity to increase energy density or freezing point would result in a reduction in anticipated battery life. This holds true, but the question is, with modern VLA batteries no longer failing due to grid corrosion, can you achieve 20 years of life at 1.250 specific gravity? How about 1.300? This paper will explore the impact of higher specific gravities on longevity and how they can be used to save footprint and string count without sacrificing longevity.

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