Thanks, Sam, I should have mentioned that I have a trickle charger that is stored in my boat and it's the last thing I do before I put the cover on. I understand that alternators are not battery chargers, I should have phrased that differently. I have two Optima Blue Top batteries that are separated by a perko switch and turning any single electrical device will drop my volt meter to 12V. Two pumps will result in the battery alarm. Nowhere near the 13.7 it should be putting out.
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