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2005


Development of a Long Lived, Wide Plate Format VRLA Cell

Allan Williamson

Robert Malley



High float current acceptance in VRLA batteries can cause cell imbalance, internal cell heating, and eventual dry-out and capacity failure. A variety of methods have been used to lower float current acceptance and postpone dry out, including catalysts and changes to materials and internal cell design. This paper discusses the development of a new, low float current, large format VRLA battery, comparing accelerated life test results to a narrow plate, low float current design and an older, wide plate design.


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