Date: Sat, 10 Apr 2010 10:28:00 -0700
Reply-To: Shawn Wright <vwdiesels@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Shawn Wright <vwdiesels@GMAIL.COM>
Subject: Re: Aux Battery in GL-Sure Power Instructions Needed
In-Reply-To: <4BC0AC5C.40902@cox.net>
Content-Type: text/plain; charset=ISO-8859-1
Mark,
Do you have any photos of the driver side box with battery & relay
installed? I now have 2 spare G41 batteries that are no longer sufficient
for starting a diesel in cold weather, but will do just fine for camper use,
so I'm thinking of putting one on the driver side. The other option is to
move the starting battery to the engine bay, and use the pass side box up
front for camper use, but that seems like a lot more work to get the wiring
right, and I'd need to build a bracket & heat shield for the engine bay.
On Sat, Apr 10, 2010 at 9:50 AM, mark drillock <mdrillock@cox.net> wrote:
> 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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