Who knows the characteristics of deep-cycle marine batteries?

If Bruce ran a 12V aerator off the battery, and kept a 110V trickle charger feeding the battery all the time, would that screw up the battery somehow or would it serve as an uninterruptable power supply for aeration while he was in town?

"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
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