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Old 03-04-2006
GordMay GordMay is offline
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Charging Voltage over 13.8VDC

Depending upon your battery type (and ambient temperatures), typical Charging Voltages are always considerably higher than 12Volts.

Bulk (Absorption) Rate:
Flooded Lead Acid: 14.4VDC (@ normal temp. 77 deg. F - Lower V for Hot temperatures, and Higher V for Cold temps.)
AGM: 14.3VDC
Gel: 14.2VDC

Float Rate:
Flooded: 13.5VDC
AGM: 13.4VDC
Gel: 13.8VDC

Be aware that your small outboard may not have a “Regulated Output” alternator, suitable for Battery Charging. Many small O/Boards only have an “Unregulated” power supply, suitable for operating lights.

HTH,
Gord May
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