Yowiie,is your question, how does the battery get charged? If so the battery gets charged from the alternator/stator.
Im not 100% sure about this but, the rectifier changes ac power from the stator to dc power, im not sure the rectifier even charges the battery,please correct if I am wrong. Anybody
If your battery is not getting charged, the battery could be bad, do a load test, take it out of the boat charge it up, does it hold a charge overnight..
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