Tom,
Motors with electric start also have charging diodes which must be hooked  up 
to a battery. If no battery is connected, you will fry the diodes in the  
charging loop.
 
Rummy
 
 
In a message dated 11/27/2008 11:53:19 A.M. Eastern Standard Time,  
tjhogarty at gmail.com writes:


Can  you start the motor with a small generator as the electric source?  
Directly, without just using it to charge the  battery?
Tom


Leland wrote:

> 
> I seem to ask the  same question around this time every year and I hate to
> beat a dead  horse, but I am about ready to start beating my dead battery.
> 
>  I have two batteries and two solar panels.  
> 
> The cabin  battery is for everything but the motor and has both solar
> panels  attached to it.  For three years it has been fully charged,
>  although it is rare that it operates much aside from my depth/fish  finder.
> 
> The motor battery is only for the motor and is  hard-wired to the motor--it
> gets charged by the motor.  All three  years it has lost its charge during
> the winter.  It is also  connected to the cabin battery.  Last year there
> was a charge  coming from the cabin battery to the motor battery, but I
> suspect that  it is too low to keep the motor battery charged.
> 
> I haven't  checked the batteries' charges yet nor have I cleaned/checked
> the  connections, but I certainly will.
> 
> I own a trickle charger  that connects to a 110 outlet and I own an AC/DC
> convertor.
>  
> I think my new marina only has 220 electrical and I haven't yet  purchased
> an expensive 220 cord nor have I had a need to do  so.
> 
> 1.  Should I re-run the solar panels so that one  charges the motor battery
> and one charges the cabin battery?  I  assume there is no danger with the
> motor battery being hard-wired to  the motor.  I don't want to do this if
> one solar panel won't be  strong enough to keep the motor battery charged
> or if I will risk not  being able to keep the cabin battery charged with
> only one solar panel  connected to it instead of two.
> 
> 2.  Should I break down  and buy a 220 cord and use my AC/DC converter and
> trickle charger to  charge the motor battery?  Any dangers to the trickle
> charger,  converter, or battery?
> 
> 3.  Should I buy one of those  rechargeable jumping battery panels to start
> the motor when the  battery is dead?  I was thinking about getting one for
> my  motorcycle anyway.  I hate it when I want to go for a ride or a  sail
> and have to wait for the trickle charger to do its thing.
>  
> 4.  Any other recommendations?
> 
> Thanks for your  advice.  Just want to make sure the electrical juice is
> worth the  economic squeeze.
> 
> Lee
> 1986 Rhodes22  At  Ease
> Kent Island, MD
> 

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