Re: [Electric Boats] Battery charger limits and the Honda 2000 generator

 

I've tried running a charger while under way, and found it quickly overheated under the strain. Additionally, as much as I like the Honda3000i genny, it has a side-draft carb, and is not marine rated. 

Better to have a long-shaft kicker in a dry-sack with 5gallons of stabilized fuel. Like electric cars, battery powered boats are restricted by their batteries. 5 gallons of fuel, at 250 watt-hours per gram through a genny, makes for a safe standby.  

Be Well,

Arby

On Mar 3, 2010, at 8:03 PM, "Dave Hackett" <dave.hackett@ns.sympatico.ca> wrote:

 

I've seen some post on this group that they can run their Honda 2000 generator plugged into their shore power plug and use their battery charger to "limp" home.  I'm wondering about the numbers.

 

If I have a quad battery charger (eg Pro Charge) rated at 15 amps per battery (x4 = 48v), the full draw on the generator would only be (4 * 15A  * 12V) = 720 watts.  I just can't imagine getting even 2 knots at this power level.  Am I missing something or do the chargers produce more then 15A when the draw out the other end is greater then 15A?  Would this potentially burn out the battery charger?

 

DaveH

 

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