Brilliant - very anxious to hear how this works out in practice. Great solution for keeping the electric outboard (trolling motor) topped up as well. 2 smaller 12V in "buddy bank" mode would give you a portable to get to shore w and still keep the boat running.
The draw from the 10-amp el-cheapo DC-DC converters is not inconsiderable; I have 2 in parallel so pulling 5+ AH from the main drive. Considering that same 5A will push my boat at about 2KTs, it's not a great tradeoff. And I _would_ say that's only when they are pulling full load, but I always have my stereo on :)
The other thing about the el-cheapos is they put out _exactly_ 12V - so by the time you have a wire-run in, you can see some pretty low voltage. Anything which is voltage-sensitive is likely to complain.
-Keith
--- In electricboats@yahoogroups.com, chris Baker <chris@...> wrote:
> The cool thing about this is that you can have large transient loads, such as a 12v anchor winch, because its pulling the current out of the battery but which would otherwise be far too much current to be supplied direct by a dc converter. Then the equaliser can take its time about balancing them again.
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