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post #164 of Old 02-21-2019 Thread Starter
Captain Canuck
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Re: Electric Conversion log for Kahleesea

Originally Posted by boatsurgeon View Post
Any number of DC-DC converters are not the same thing as 12 Vdc emergency reserve capacity.

Failure of the 48 Vdc propulsion electrical system renders every DC-DC converter instantly inoperative, and as a result, all 12 Vdc electrical system equipment including safety, navigation, and lighting.

Cripes, the 12 Vdc lighter socket won't even work so you can sit back and have a smoke (along with your hair and the boat) while you reconsider the validity of your choices. ;-)
What, exactly, do you expect will happen to knock out all 4 batteries in the pack at the same time? The batteries are wired in parallel, so any one battery failure just reduces the total capacity available.

Anything I can come up with while sailing that would kill all the batteries at once would also kill me simultaneously or sink the boat, rendering the 12v system irrelevant anyway.
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