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Old 01-12-2018, 01:29 PM   #19
aboatman
Senior Member
 
City: Washington
Join Date: Nov 2017
Posts: 468
A typical boat battery installation will not have an active ventilation system. Any outgassing from the batteries is diluted by ambient air.

Now if you decided to install a bank of batteries under a berth or in a closed cabinet, a ventilation system would be a good idea.
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