To be sure you need to know, exactly what your drawing in amp hours,  
and how long you want to do that for.

also take a look at

http://www.yandina.com/c100Info.htm Like the surepower, but cheaper.

On Jan 5, 2008, at 12:00 AM, Bob Stevens wrote:

> My suggestion would be an Odyssey battery (model 925 will fit with  
> lotsa room left over) and rather than an inverter, I'd suggest the  
> Sure Power 1315 Separator. I've got this set up and it works great.  
> There are instructions with the 1315 that will allow you to wire it  
> to use the aux. bat. for starting when/if the main is to low. By  
> the way, all the instructions about how to install and wire the  
> system come with the 1315, it just that the "starter" option is an  
> alternative, not necessary in order to install and use the 1315.
>
> Bob Stevens
> '87 Syncro Westy> > Hi All,> > I plan to install an Optima gel  
> Battery under the driver's seat in my 85> Westy so I can use an  
> Inverter for AC power..> Ive read some of the write-ups on how to  
> do this, but can't find the model> number that was used.> Does  
> anyone know the model number, and also where one can buy such a  
> battery> in Canada?> Also, what might be the second best battery  
> awailable that will fit under> the front seat?> > Thanks a bunch> >  
> Alfred> 85 Westy
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