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Black box batteries ought to last longer

I know I’m comparing apples to oranges here, but we have smoke detectors that have a battery with a 10-year life. Could somebody explain to me why we can’t come up with a battery for the black boxes on our aircraft that will last more than 30 days? Don’t we have the technology on this earth to come up with a power source that would last longer than 30 days for these black boxes?

James Mulqueen


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