Thread: Two Alternators
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Old 10-19-2017, 11:35 AM   #3
Larry M
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City: JAX, FL
Country: USA
Vessel Name: Hobo
Vessel Model: Krogen 42-120
Join Date: Nov 2008
Posts: 8,168
If your using your boat for low rpm travel such as trolling, you may not have enough pulley rpms to charge your batteries and/or keep your house 12 VDC systems alive. Here’s an alternator output curve from Balmar.

Alternator Output Curves | Balmar
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