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Unread 09-21-2013, 03:25 PM   #1
Dr.Dirty
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Genesis Offroad JK dual battery install

It was time to upgrade the Jeeps batteries to keep up with all the add on accessories.

We went with Odyssey Batteries http://www.odysseybattery.com/

And the Battery tray is from Genesis Offroad http://www.genesisoffroad.com/store/...ttery-Kit.html


I will say this is the easiest Dual battery kit to install on the market.



From Genesis's website discussing the key features of the kit.

Here's how it works.

When both your batteries are fully charged at 13.2 volts, they are automatically connected and are charged at the same time.
When you park and turn off the engine, but continue to use accessories such as lights or the stereo or a CB, both batteries begin to drain down.
When your main cranking battery reaches 12.7 volts, the smart isolator separates the batteries, so that your cranking battery will have enough power to start the engine. The second battery continues to power your accessories for as long as it will last.
After you crank the vehicle, your main cranking battery will be charged up to 13. 2 volts first, and then the isolator will begin charging your accessory battery. By only charging one battery at a time, your alternator is protected from excessive strain.

What if your cranking battery is somehow drained down too low to be able to start the vehicle? We have a solution for that.

Press the Start Boost button and the isolator will connect both batteries together for 1 minute, acting like built-in jumper cables to jump start your engine off your accessory battery.
As long as the combined voltage of the 2 batteries is at least 12.7 volts, you'll be able to start your vehicle instead of being stranded with a dead battery!
The alternator will charge both batteries for 1 minute, then switches back over to automatic mode to reduce the strain on your alternator.
A remote status indicator light can be added on your dash to show you when the batteries are connected, indicating that they are both fully charged.





And now on to the install

























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Unread 09-21-2013, 03:25 PM   #2
Dr.Dirty
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Unread 09-21-2013, 05:33 PM   #3
jmb6420
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Looks good. I've been searching for a good 2 battery setup. Thanks for the write up.
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Unread 09-21-2013, 05:58 PM   #4
brianjw
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Looks nice! I keep think that dual batteries will be my next upgrade, but other priorities keep coming up.

Whose isolator are you guys using in the kid?

Is the mounting tray available separately?

Since I just ordered another $1500 worth of parts, I'm considering just a mounting tray and another cheap auto battery running parallel with the factory battery, as a cheap way into more battery power until I want to spend the cash for a good isolator and battery batteries.
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Unread 09-21-2013, 06:05 PM   #5
Dr.Dirty
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Quote:
Originally Posted by brianjw View Post
Looks nice! I keep think that dual batteries will be my next upgrade, but other priorities keep coming up.

Whose isolator are you guys using in the kid?

Is the mounting tray available separately?

Since I just ordered another $1500 worth of parts, I'm considering just a mounting tray and another cheap auto battery running parallel with the factory battery, as a cheap way into more battery power until I want to spend the cash for a good isolator and battery batteries.
Genesis is using a Cole Hersee Smart Isolator pn#48525

http://www.colehersee.com/home/item/cat/211/48525/
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Unread 09-21-2013, 07:15 PM   #6
rolandthegypsy
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That's a nice setup. I am looking forward to installing a dual battery system.
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Unread 09-21-2013, 08:23 PM   #7
TheBoss
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On the bottom of the to do list; but very nice write up and tutorial.
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Unread 09-22-2013, 02:25 AM   #8
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Great write-up and pics. I like the fact that you donít have to cut the OEM battery tray in halve and reuse it.
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Unread 09-22-2013, 09:22 PM   #9
73azbronco
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Thanks, another $500 gotta have it.... I need to stop looking at these threads.
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Unread 09-23-2013, 07:49 AM   #10
Dr.Dirty
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One thing that I missed is that if you have the 3.8 Genesis has the evap solenoid covered. I lengthened my harness but the offer an extension harness with OEM connectors making this 100% plug and play. Also if your running the OEM Air box you will need to cut and save a small portion off your factory battery tray.
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Unread 09-23-2013, 09:39 AM   #11
4wdjeepguy
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What's the point of dual batteries?
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Unread 09-23-2013, 11:12 AM   #12
73azbronco
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reserve for winching, backup power if one dies or is drained.
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Unread 09-23-2013, 05:41 PM   #13
jmb6420
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Quote:
Originally Posted by 4wdjeepguy View Post
What's the point of dual batteries?
Sometimes I take my jeep way, way off road. Nothing dangerous, just off by myself. No cell phone towers, no stores, no roads, no other people in sight. I don't have a dual battery system yet, but I do carry a spare battery, belt, air compressor, tire plugs, drive shafts, tools, first aid kit, water, food, fuel, diff oil, engine oil, duct tape, tent. etc.

Having a battery go bad when you are out of cell phone range and 30 miles to the nearest inhabited place you know of is not really a fun thing to happen.
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Unread 09-23-2013, 08:28 PM   #14
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Originally Posted by jmb6420 View Post
I do carry a spare battery
Didn't you just state a cheaper alternative to this system? I'd just install a Diehard Platinum and not wheel alone.
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Unread 09-23-2013, 09:16 PM   #15
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Dual batteries would allow to run your off-road light while work on buddies rig without having to run the engine and still know for sure it will start a few hours later.
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