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2006


Monobloc Batteries: High Temperatures, Life and Catalysts

Harold Vanasse

Daniel Jones



12-Volt Monobloc batteries have become very popular in recent years due to their high power density and compact form. With the advent of the front terminal design, this battery has become easy to install and support and its compact form allows it to be used in a wide variety of space constrained applications where larger 2-volt VRLA cells will not fit. The Monobloc VRLA battery, while not new, has become the preferred battery to be used in outside plant (OSP) applications due to the features just outlined. As is being discovered, the high temperatures of the outside plant environment are not conducive to the life of these batteries. This paper will review the life expectations of Monobloc VRLA batteries, explore the effects of high temperatures on these batteries and explain why high temperature can drastically shorten the life of VRLA batteries. Finally the paper will present a possible application of catalysts to 12-volt Monobloc batteries in order to mitigate the effects of high temperature.


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