Quote:
Originally Posted by Mischief Managed
The fact that the voltage does increase after running the main engine for awhile indicates that the batteries you are charging with the alternator are drawing the alternator voltage down because they are absorbing as much current as the alternator can produce. Once the battery current draw slows up as they get charged, the voltage goes up. This is normal, especially when charging a big battery bank.
A battery state of charge monitor with a shunt will tell you the state of the batteries and the amount of current coming out of them or going into them. Would be a worthwhile improvement to any cruising boat IMO. I love the Blue Sea System stuff.
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State of charge monitor from Blue Sea? I will look it up. I have shunts from my old house bank, so can use that. I’ll look up the monitor you are recommending. If not too expensive, I’ll invest in it.