During the end 2009 i have procured 10KVA UPS with EXIDE SMF VRLA batteries (20 Nos) for the Computer Lab. in our Educational Institutions. But 2 of the batteries are weaken and failed to provide the output. Even i replaced the defective batteries with new batteries, the supplier advised us to replace the entire unit with Tubular Batteries which is problem free and advised us EXIDE SMF batteries is failure in most of their installed sites.
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