Date: Sat, 10 Apr 2010 09:50:36 -0700
Reply-To: mark drillock <mdrillock@COX.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: mark drillock <mdrillock@COX.NET>
Subject: Re: Aux Battery in GL-Sure Power Instructions Needed
In-Reply-To: <96E5D1DA-C787-4D66-98AF-8DF307668CAA@shaw.ca>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
As I stated earlier I don't care for the start assist in Vanagons when
the front battery boxes are being used. The SurePower 13xx products use
heavy duty relays from generic applications and add their own logic
board externally to control the relay. You can look up the relay specs
as provided by the companies that make or sell just the relay. I have
used just that relay part alone for 12+ years when installing aux bat
setups on Vanagons. Since SurePower began selling their enhanced version
I have mostly switched to using those wired in their simplest
configuration. The start assist may help them sell more and in other
applications no doubt adds value but the tight battery boxes we have
don't have room for the proper size battery cable to properly implement
the feature IMHO. I like to bolt the 13xx or just the relay down on the
floor of the battery box on the driver side, then add the stock size
battery. This keeps exposed battery connections to a minimum. It still
must be done carefully and safely and it barely fits.
The product on this sheet is closest to what the 1314/1315 uses.
Stancor 120-901. If you click on the datasheet link you can see more
specs as well as related products.
http://www.alliedelec.com/search/productdetail.aspx?SKU=576-3007&R=576-3007&sid=452991004F82E17F#tab=Specs
Mark
Alistair Bell wrote:
> ok Mark.
>
> seemed like a lot, but I believe you :) but 400 A for 1/2 sec is not
> really enough time to start the engine is t?
>
>
>
> I had a cursory look this morning and found there is a sure power
> 1315-200 that is explicitly rated for battery "bridging" for starting
> (220 A cont).
>
> alistair
>
>
> On 10-Apr-10, at 8:39 AM, mark drillock wrote:
>
> The manufacturers spec of the relay used in the 1314/1315 is 400 amps
> for up to 1/2 second after the relay closes, also known as inrush
> current. I have found the relay to be more robust than the spec says but
> YMMV. Since SurePower says their product supports starting boost I would
> assume they have determined that the relay can do it.
>
> Mark
>
>
> Alistair Bell wrote:
>> you sure the plain old 1315 can take 400 A?
>>
>> alistair
>> .
>
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