Connecting solar panel to NL solenoid controller

Modifications to any other vehicles or things which can benefit any of the other vehicles owners.
Post Reply
User avatar
FIRSTGEER
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1426
Joined: Thu Sep 30, 2010 6:00 am
Town: King WilliamsTown
Vehicle: 2,5 D4D Singlr Cab 4X4 Full OME suspension. snorkel.GMA aftermarket bullbar.
Real Name: Tony Geer
Club VHF Licence: HC 109

Sun Oct 09, 2016 7:22 pm

I have installed a second deep-cycle battery to my Hilux camper utilizing the National Luna solenoid system and it has been working well with no problems.I have recently purchased a 100 w solar panel and voltage regulator which I will be installing onto my camper.

I can install the solar panel using one of two possible options (to my limited knowledge) to connect to the existing National Luna solenoid system on my vehicle.

1. Connect the solar panel via the voltage regulator directly to the secondary battery.Will this have any issues with the power supplied from the alternator when the solenoid is engaged automatically by the NL controller ?

2. Install a 5 pin relay connected using the ' normally closed contacts ' which will charge the secondary battery when when the vehicle is stationary(engine off).The control circuit of the relay is energized using the control circuit of the NL solenoid so that when the solenoid is energized,the normally closed relay is switched to the 'Off' position and thus disconnecting the solar panel from the secondary battery.I seem to think this option is the way to go.

Can any of the members advise my on this issue before I decide which of the above methods I should use or if there are any other possibly better methods I can use ?
Image

User avatar
Johan Kriel
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 604
Joined: Sun Apr 26, 2009 8:41 pm
Town: Okahandja
Vehicle: 2.5 SC 4x4
Real Name: Johan kriel
Location: Okahandja

Sun Oct 09, 2016 8:47 pm

Solar charger direct to the aux battery.

Assuming you only connect the solar when stationery, not that it matter, If the solar are permanently connected.
Johan Kriel

Prado

User avatar
FIRSTGEER
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1426
Joined: Thu Sep 30, 2010 6:00 am
Town: King WilliamsTown
Vehicle: 2,5 D4D Singlr Cab 4X4 Full OME suspension. snorkel.GMA aftermarket bullbar.
Real Name: Tony Geer
Club VHF Licence: HC 109

Sun Oct 09, 2016 9:12 pm

Thanks Johan.I was just worried that the input voltage from the solar may somehow have some type of problem with the alternator input voltage if they where fed together to the 2nd battery.Hve you installed something similar ?
Image

User avatar
Mud Dog
Moderator
Moderator
Posts: 28393
Joined: Tue Apr 29, 2008 2:18 am
Town: East London
Vehicle: '90 SFA Hilux DC 4X4, Full OME, 110mm lift. Brospeed branch, 50mm ss freeflow exhaust. 30 x 9.5 Discoverer S/T's on Viper mags. L/R tank. (AWOL) '98 LTD 2.4 SFA, dual battery system. Dobinson suspension, LR tanks, 31" BF mud's.
Real Name: Andy

Mon Oct 10, 2016 2:26 am

I also don't think that there will be a problem in connecting both to the aux battery directly.

I have done basically the same thing except that instead of a NL controller I have a manual switching and I haven't experienced any alternator / diode / voltage regulator or solar panel controller problems even though I have sometimes had both circuits closed. The only thing that I have noticed is that the solar controller sees the aux battery as being fully charged and it reduces / cuts supply - that means that you loose the solar input (or most of it) during that time, which is what will happen with your option 2 setup anyway.
When your road comes to an end ...... you need a HILUX!.

Image
Image

Life is like a jar of Jalapeño peppers ... what you do today, might burn your ass tomorrow.
Don't take life too seriously ..... no-one gets out alive.
It's not about waiting for storms to pass. It's about learning to dance in the rain.
And be yourself ..... everyone else is taken!

User avatar
FIRSTGEER
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1426
Joined: Thu Sep 30, 2010 6:00 am
Town: King WilliamsTown
Vehicle: 2,5 D4D Singlr Cab 4X4 Full OME suspension. snorkel.GMA aftermarket bullbar.
Real Name: Tony Geer
Club VHF Licence: HC 109

Mon Oct 10, 2016 7:25 am

Thanks Andy.I also thought along those lines.When the load from the solar panel is disconnected,the voltage regulator should basically switch off.I think I will go with my option 2.I wanted to throw the idea around to see what the other members thoughts would be.Thanks to you guys for your input.
Image

User avatar
Stef
Monster Truck
Monster Truck
Posts: 3108
Joined: Mon Jan 25, 2010 12:54 pm
Town: Pretoria
Vehicle: '98 LTD
Real Name: Stefan
Club VHF Licence: X107

Mon Oct 10, 2016 10:24 am

Option 2 is better, just to be on the safe side

Post Reply

Return to “General Mods”

  • Information
  • Who is online

    Users browsing this forum: No registered users