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Old 03-06-2017, 07:48 PM   #13
psneeld
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City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,156
Quote:
Originally Posted by Lou_tribal View Post
Speaking about this, I have a little Yamaha portable generator aboard. Barely use it but I keep it in case y batteries go flat or if I want to stay more than 1 day at anchor without moving. I have 2 type of outlet, 110V AC and 12V DC. Curently I have a switch at on the main panel to select either dock or generator source and the power goes through the batteries charger to charge them.
Wouldn't it be more efficient to connect directly the 12v output to the batteries instead of burning fuel to make 110v and transform it to 12v?
Generally with those small gensets...you can get more amps out of a battery charger for just charging than their 12V output.

My little Honda only puts out 6 or 8 amps DC but ran a 25 amp Battery charger no sweat.
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