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2011


Important Considerations When Reducing The Run-Times Of VRLA UPS Batteries

Mike Nispel



This paper discusses the technical risks and unintended consequences involved in reducing the run-time of a VRLA UPS battery installation from the traditional 15 minutes to 10 or 5 minutes. A discussion of the proper capacity calculation method is presented. An interesting review of the variations found in mainstream, commercial VRLA products is also presented, which may prove very disconcerting to UPS end-users.


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