Solar panel and battery disconnect

[Nauticajetter]

So it's confirmed by me seeing the red light on my DVSR when both battery switches were turned off. It does charge both batteries when switches are off. Fantastic. Thank you so much for figuring this out.

 

[Coheeba]

It appears that way.
In addition to the call I received a response to an email I sent:


From: "AMAUK BEP.App.Engineering" <BEPAPP.Engineering@powerprodllc.com>

Date: Sunday, June 25, 2017 at 16:07

To: "coheeba@gmail.com" <coheeba@gmail.com>

Cc: Shared Mailbox - Marinco Technical <AMNPA.technical@marinco.com>

Subject: RE: BEP Contact Us Message




Hi Rick,


Thank you for your enquiry. The DVSR is ‘Dual Sense’ unless the ‘Red Wire’ has been cut on the rear and wired to Ignition.


The unit engages at when it detects 13.4 VDC on either terminal immediately. It dis-engages when it detect s 12.8VDC after 20 seconds.




Best regards,


Kiel More


Application Engineer APAC




+64 9 448 0027 direct


+64 21 879 688 cell


kiel.more@powerprodllc.com


kmore@bepmarine.com




id:image001.png@01D29F04.F14FCC70


BEP Marine Ltd


42 Apollo Drive, Rosedale, Auckland, New Zealand.


P.O. Box 101739, North Shore Mail Centre


www.powerprodllc.com <http://www.powerprodllc.com>


id:image006.png@01D29F04.F14FCC70

 

[Coheeba]

One more thing, the tech said when you have the boat in long term storage (winter) and not on a charger, that is what cutting the red wire is designed for. The switch does consume a little power so it will eventually draw the battery down.

 

[Coheeba]

When the DVSR senses a charge voltage 13.4v it in effect parallels the batteries. The problem is if your house battery is down 12.ov and the start is 12.8 when the DVSR parallels them the start wants to charge the house at a high current. This is not optimal and will shorten the life of the battery. IMO if you hook up solar panels directly (fused) to each battery you remove the DVSR from the equation and the panel trickle charges both whenever the solar panel is activated. I am not a rocket surgeon so if so of the more electrically inclined @Mainah @David Analog could weigh in and give an opinion it would be helpful.

I also checked with my battery guru and he said that paralleling two lead acid batteries with a 1 v difference is not a problem, LIPO's is a different story.

 

[afdouble]

If I have shore power (genius dual bank), should I hook it to the same dvsr prong as the solar panel? Is it safe to hook to the batteries direct with the solar panels?

 

[afdouble]

shameless bump....