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"FYI: The alternator needs to put out MORE current than what the battery is rated...this is what "recharges" the battery. If the alternator's output is the same or lower than the battery, then it can't overcome the battery's internal resistance. The greater the ouput difference...the faster the battery recharges. "
QS7, not a challenge here but this is not 100% correct. You might want to research how lead acid batteries work internally. Just an FYI... -Dennis