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Date:         Sun, 10 May 2009 09:48:06 -0700
Reply-To:     Keith Ovregaard <kovregaard@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Keith Ovregaard <kovregaard@GMAIL.COM>
Subject:      Re: Surepower 1315 test report
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <BAY132-DS344F8E3ABFB3368E2726DA0620@phx.gbl>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

From what I have learned about batteries, it is not recommended to charge dissimilar batteries or dissimilar states of charge. Deep cycle batteries require a different charge cycle than a start battery. Granted, most of the time there will be no problem, but when I want to run an equalizing charge on the deep cycle battery I can't do it with the current setup. In fact, yesterday my smart charger (Schumaker 2/10/30/60 SpeedCharger) went into error mode probably because the 1315 was switching back and forth as the charger was trying to do it's thing. I don't really know, but once the ground on the start battery was pulled, the charger was OK.

Keith

On May 10, 2009, at 9:10 AM, Dennis Haynes wrote:

> Once you add or use the battery switches it is no longer automatic. > I also > see no problem letting the charger also top off the starting > battery. If the > charger is really large, having another battery connect during the > bulk > charge may actually give you better results. What size is your > charger and > house battery? My present and past RV used the bi-directional combiner > concept and it has worked very well for nine years. > > Dennis > > -----Original Message----- > From: Keith Ovregaard [mailto:kovregaard@gmail.com] > Sent: Sunday, May 10, 2009 12:04 PM > To: Dennis Haynes > Cc: vanagon@GERRY.VANAGON.COM > Subject: Re: Surepower 1315 test report > > Certainly a relay would have worked for my setup, but since I already > have the separator installed, I might as well add the battery switches > to isolate the batteries while hooked up to the high-amp charger. > Otherwise, this system works very well and I don't have to do a thing. > It's totally automatic. > > Keith O. > 90 Westy Syncro "VikingWagen" > > On May 9, 2009, at 7:26 PM, Dennis Haynes wrote: > >> At that point what you really want is an ignition switch or >> alternator >> controlled relay. A lot cheaper than the combiner. >> >> Dennis >> >> -----Original Message----- >> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On >> Behalf Of >> Keith Ovregaard >> Sent: Saturday, May 09, 2009 6:05 PM >> To: vanagon@GERRY.VANAGON.COM >> Subject: Surepower 1315 test report >> >> To answer the question of whether disconnecting the ground from the >> 1315 battery separator would force the battery banks to separate, the >> answer is no. The 1315 must be able to sense voltage between the >> batteries without being grounded. FYI, my 1315 is wired with a manual >> boost switch and LED indicator, for what that's worth. That shouldn't >> have anything to do with normal operation. I also isolated the 1315 >> from the frame ground to see if that had any effect and it didn't. >> So, >> it looks like the installation of a main switch on each battery will >> do the trick to guarantee isolation of the batteries. >> >> Keith O. >> 90 Westy Syncro "VikingWagen" >> > > > > > >


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