Join Date: Nov 2008
Location: Newport, Oregon
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Another 12v power question
Upon excellent advice from my Sailnet peers, I have chosen installing mostly 12v devices -- lighting, etc. -- enabling me to use most of those while away from my 120v shore power. (It made sense to me from the start, but I wanted to hear from some of you more experienced folk anyway.)
The next question is: I have purchased a new 120-12v converter, one that has multiple, automatic settings (full charging, trickle, etc.) So, in port I have unlimited 120v shore power (at least up to 30amps, of course); and I now have a new 12v converter. But, if -- as a liveaboard -- I am using a greater number of 12v devices than the boat's electrical system was designed for -- despite having a brand new converter -- am I harming my batteries? Does the majority of the power used go into and out of the batteries; or does it go from the converter, to the battery terminals, and -- bypassing the batteries, for the most part -- go straight to the devices?
I know it's a strange question. And, as a former Navy electrician, I should know the answer. But I have some-timers disease -- sometimes I forget things -- and I just don't know whether using more lights, more chargers, more fans, etc., is going to wear out my batteries.
Sorry for the long drawn out question.