Thursday, March 4, 2010

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

 

By the number of posts on this subject this seems to be a popular and convenient way to extend your range.  I'm wondering about efficiency.  What are the losses going 110V AC to some other voltage thru a charger?  Wouldn't a direct DC generator be alot more efficient?


------ Original Message ------
Received: 08:20 PM PST, 03/03/2010
From: "Dave Hackett" <dave.hackett@ns.sympatico.ca>
To: <electricboats@yahoogroups.com>
Subject: [Electric Boats] Battery charger limits and the Honda 2000 generator


 

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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