Simple Battery Mounting - SailNet Community
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post #1 of 1 Old 06-14-2010 Thread Starter
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Simple Battery Mounting


I have a outboard equipped Catalina 27. I have two wet cell batteries mounted in the port cockpit locker (so big I can sit inside it). These currently drive the onboard electrical system. However, it is old and I am looking to rewire the boat over the next few weeks.

So I want to use some of the empty space under the cockpit where an inboard would be to add a house battery bank and transition all of my electrics save for starting the engine to it. I've been agonizing over making a battery platform to mount the new batteries and boxes on.

Then I realized that AGM batteries don't need to be vertical. My thought is to glass in some 2-3 inch wide strips of plywood that conform to the shape of the battery on its side, lay it on its side and strap it down. Given there is a significant slope towards the keel, the batteries would be at about a 60 degree angle from the vertical.

While not pretty, I believe it would be functional and easy to do. I could even put the batteries into boxes for additional protection and strap those down. Wires would run up and over the access door to the battery on the other side and the main electrical connections would be mounted above the starboard battery on another sheet of plywood neat and out of sight.

Expected load on the bank are 6 0.08A LED cabin lights, GPS plotter, DSC VHF/AIS, depth sounder, nav lights (incandescent) and marine stereo. I'm thinking one or two 105AH AGM cells.

I'm looking for a simple installation. I think this will work well. The guide says the batteries can be mounted in any position save inverted. Even heeled over, the batteries would only reach 90 degrees in the most extreme circumstances.

Thoughts? And thanks in advance.


SV South Paw
2000 Hunter 340
South River, MD
Star #6100
Annapolis, MD
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