Maintenance Matters

January 2008 Issue

Aircraft Battery Trials: Concorde Sealed Wins

In flooded designs, Gill and Concorde are close. But owners complain—and our tests show—that Gill sealed models aren’t as long-lived as the Concordes.

To hear some owners tell it, buying an aircraft battery is like playing the lottery: You buy your ticket, cross your fingers and wait around to see what happens. Some owners—those lucky enough to get five years out of a battery—ask what’s the big deal? But the poor sap who buys two batteries in as many years has a more cynical view. Is this any way to run an industry? We’re not sure, but our tests and owner surveys reveal a wide disparity—not to mention a vein of customer ire—in battery performance and longevity. In this article, we’ll examine aircraft battery options to make sense of it all. Upfront, we’ll say that the smart money rides on sealed battery designs from Concorde, with flooded models from Concorde as second choice and Gill flooded products a close third

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