[Electric Boats] 48V to 12V

Definitely the way to go if the bilge pump runs regularly, or if the other 12v stuff needs a supply.
Not only do you have the redundancy of the battery being capable of direct hookup, but there are 3 more batteries you could use in an emergency, provided you do not have a fixed common ground. The trick might be to have the connectors, whatever you use, set up for multiple options.

John

From: chris Baker <chris@currentsunshine.com>
Subject: Re: [Electric Boats] 48V to 12V
To: electricboats@yahoogroups.com
Received: Saturday, February 19, 2011, 1:33 PM

Now that the crux of this discussion has turned to reliability
its worth thinking about this in relation to the battery equaliser
solution I mentioned earlier in this thread.
http://www.solarconverters.com/

In this case the load is coming from one of four propulsion batteries
in a 48v pack. If the equaliser fails, you still have supply to your
critical 12v equipment such as bilge pump and radio.

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