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Duel Battery

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Duel Battery

Postby BUSHPIG » Wed Nov 18, 2009 6:23 pm

hey all im just in the prosess of doing my duel battery setup. What id like to know is can i take the main power feed to my isolater from the starter moter? because im thinking of takeing my feed of the big main constant power cable to the starter from the frist battery. I figure it should be ok as the starter only needs that feed when cranking and my duel battery system wont be needing the voltage while cranking.
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Re: Duel Battery

Postby grunter » Wed Nov 18, 2009 11:44 pm

Hi dude,
thers no real differance from the pos of the starter but for ease of instalation i'd take the pos lead from the main battery and run it to the solinoid and use the pos lead off the wiper moter to triger the solinoid as it only activates when the ignition is on.
cheers.
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Re: Duel Battery

Postby BUSHPIG » Thu Nov 19, 2009 4:50 am

cool i think ill take it of the starter then as i wont have cables running every where if i pik it up fromthe starter just a nice short little power feed. good idea about switching it of the wiper. thx grunter
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BUSHPIG
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Posts: 196
Joined: Fri Jun 05, 2009 8:47 pm
Location: Crappy Old Auckland
Age: 29
Country: NewZealand
City: Auckland
Vehicle: 1988 GQ Safari
TD42 Turbo Running 17psi
Custom BRD Top Mount Intercooler
Custom BRD 3" Exhaust
Factory GU Turbo Airbox
Safari Snorkle
2000 Gu Td42-T Injector Pump
Turbo Injectors
Pto Winch
Custom BRD On-Board Air Bracket With Modified Second A/c Pump
Custom Front Bar Work
Ally Roof Cage
2 1/2" Suspension Lift
Front LSD
Rear LSD
33x12.5xr15 Maxxis Tyres
Diff And Gearbox Breathers
Am Cb
Uhf Cb
GPS Tracker.

Planed Mods::
Exo Cage
Rear Barwork
Rear 14,000lb Winch

Re: Duel Battery

Postby MattMu » Thu Nov 19, 2009 2:54 pm

What would you know Grunter....bloody apprentices !!!!!
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Re: Duel Battery

Postby grunter » Thu Nov 19, 2009 10:20 pm

Hay Matt whats this appy thing im signed off now and can create havoc anny where i like now see ya next sat dude.
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Re: Duel Battery

Postby geeves » Fri Nov 20, 2009 4:59 am

can we please keep the little lovers tiffs off the forum please (maybe ok in the bar)
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Duel Battery

Postby Pissy » Fri Nov 20, 2009 11:33 am

The wiper motor piggy backing is the most common and easiest way of tapping into the ignition circut. I run my dual batts off it too.
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Re: Duel Battery

Postby Ricardo999 » Sat Nov 04, 2017 9:39 am

Use a VSR - the batteries will automatically link when the starting battery voltage gets over 13.5, and drop off under 12.8. Benefit is you are charging the starting battery up a bit first before connecting the second battery.
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Re: Duel Battery

Postby ecw23able » Sat Jun 02, 2018 6:32 am

The other way people do it is run a relay off the oil light. That way when the oil light goes out I.e engine running the relay closes which in turn closes a solenoid linking the second battery. That's if you want a start batt house batt setup. Otherwise you can benefit by just parallelling both batteries withoiut fancy switching but you loose the idea of always having a good start battery. But it will still give you longer before it goes flat load dependent.
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