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| Author: | Red_October [ Tue Nov 24, 2009 3:46 pm ] |
| Post subject: | Need advice - dual battery system |
I'd like to install a dual battery system soon but would like a hand in deciding what is best for me as I have no idea when it comes to this stuff. I plan on running a fridge, compressor and 6 100w spotties. A winch may be in the not too distant future too. I've done the 110amp EL alternator upgrade but have not upgraded any wiring. 1. Do I need to upgrade any wiring? If so, which wires and what amperage? (i.e. Alternator-Battery) 2. I've heard Redarc systems are pretty good. Would the 100amp Redarc system suffice? 3. Batteries - any suggesstions on what to get? Cheers, Jimmy |
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| Author: | Ridge [ Tue Nov 24, 2009 4:09 pm ] |
| Post subject: | Re: Need advice - dual battery system |
i have a dual battery system, i am using a piranah off road isolator about $180. to run my winch the battery had to have a min 660cca, i used the biggest battery i could fit under the bonnet  Your wiring will depend on how much power is drawn with the fridge and lights etc. i used a set of 200 amp jumper leads from super cheap to do my connections, was way cheaper then buying regular cable.
ill get a few photos for you later of my set up. |
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| Author: | Red_October [ Tue Nov 24, 2009 4:51 pm ] |
| Post subject: | Re: Need advice - dual battery system |
Cheers Ridge, that would be great 
I guess my biggest concern is wiring and making sure i've got the right system. It's the amperage that confuses me. In a dual battery system there are many different amperages. This is my understanding: EL Alternator - 110amp Alternator to Starter battery - ???amp Starter Battery to isolator/solenoid - ???amp Isolator - 100amp (used as an example based off the Redarc system) Isolator/solenoid to secondary battery - ???amp Whatever amperage i'm drawing - ???amps (fridge, compressor, spotties) Am I correct in presuming that the Isolator/Solenoid amperage is the maximum current that can be drawn from the secondary battery and all wiring running between batteries must be at least the same amperage? I'm probably thinking way too much about it but I like to understand how things work and give them a crack myself rather than simply installing and not knowing what's happening and why. |
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| Author: | shep [ Tue Nov 24, 2009 4:53 pm ] |
| Post subject: | Re: Need advice - dual battery system |
i did a compleat setup including a quality 58amp battery for under $200 i will try and find the thread for ya, however i do suck at searching. 
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| Author: | Red_October [ Tue Nov 24, 2009 4:56 pm ] |
| Post subject: | Re: Need advice - dual battery system |
Batteries have amperages too?  Well that just confuses me more! I will now freely admit that I have NO idea about this stuff 
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| Author: | royce [ Tue Nov 24, 2009 5:17 pm ] |
| Post subject: | Re: Need advice - dual battery system |
your alternator will cope with your lights just fine your isolator will work fine dont worry about the winch, it can go on the main battery now to chose your battery you need to know what will run of it without the engine running and for how long, afterall a battery is jsut a tank so you need to have enough storage in it obviously the more current an item draws the faster it will drain the tank and the longer you want to run an item for the more you will drain the tank having said that jut get the biggest battery you can fit where you want to put it 
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| Author: | foonji [ Tue Nov 24, 2009 6:03 pm ] |
| Post subject: | Re: Need advice - dual battery system |
Nice topic, Im about to put in a new battery and upgrade the battery terminals/cables... I can see the positive goes to the starter and is an eyelet bolt on, but the negative seems to go to the started as well, but its not visible and but it feels like it goes straight in and no eyelet... Any own know what the go is with it? |
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| Author: | BAZZOOK [ Tue Nov 24, 2009 6:24 pm ] |
| Post subject: | Re: Need advice - dual battery system |
this is in my jimmy. I just run a cut out switch on the dash to the solenoid. Deap cycle battery is the biggest expense |
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| Author: | royce [ Tue Nov 24, 2009 6:35 pm ] |
| Post subject: | Re: Need advice - dual battery system |
foonji wrote: Nice topic, Im about to put in a new battery and upgrade the battery terminals/cables...
I can see the positive goes to the starter and is an eyelet bolt on, but the negative seems to go to the started as well, but its not visible and but it feels like it goes straight in and no eyelet... Any own know what the go is with it? it has an eyelet on it and goes under one of the starter motor on you should also have a decent one from the negative to the firewall as well, some cars didnt have it and it solves a lot of dramas |
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| Author: | foonji [ Wed Nov 25, 2009 2:11 am ] |
| Post subject: | Re: Need advice - dual battery system |
royce wrote: it has an eyelet on it and goes under one of the starter motor on Ah ok, I see it now, will give it a crack tomorrow. royce wrote: you should also have a decent one from the negative to the firewall as well, some cars didnt have it and it solves a lot of dramas
funny you mention that, its one i will be replacing as the previous owners did a bodgy there and its some 240v wiring there atm for it. lol Thanks |
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