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Old 03-17-2014, 01:53 AM   #1
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Genesis Dual Battery Install Review

I installed this kit this morning and it was a very simple and straight forward. The only difficult task is cutting up the old battery box. The instruction are very complete and I would recommend that you read through them at least of few times before starting the project. I made one error because I failed to read a section. A little super glue and everything was alright but it could of been costly. In total I spent about 2 hours performing this install.

For batteries I went with 34/78 Diehard Platinum's. The kit calls for 34 series but Sears (color of money) does not make a 34 in the Platinum series other than a marine battery which would work, it is just a bit taller. It is a tight fit but it works. Against the fire wall I removed the plastic side protectors and used some gorilla tape to cover the terminals. For the front battery I left the plastic caps on. As I said it tight but for a total cost of $390 for both batteries rated at 850 CCA with a 135 min reserve I can live with tight.

I strongly recommend this kit for anyone thinking about a dual battery setup.



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Old 03-17-2014, 06:47 AM   #2
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are the batteries in series or in parallel?

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Old 03-17-2014, 07:14 AM   #3
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In parallel
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Old 03-17-2014, 09:50 AM   #4
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I installed the Genesis kit a few weeks ago with two Odyssey batteries. The kit is extremely well engineered and uses top-quality components. While I would also recommend the kit, I would hesitate to call it a simple install. I encountered several issues and the install ended up taking more than 6 hours.

The instructions call for removing all 7 connectors from the main fuse/relay box. I ran into 2 stubborn connectors that were impossible to remove. After spending an hour or more trying to remove the last 2 connectors, I discovered I was able to get the box up onto the fender and out of the way with the final 2 connectors still attached. There is a video of a dual battery install from another manufacturer in which they are able to get the box up onto the fender with all 7 connectors still attached. I don't think that would have been possible in my case, but I was able to do it with 2 connectors still attached.

I thought the hardest part of the install might be removing the bulky OEM battery tray, which seems to have everything but the muffler attached to it. However, once I removed everything from the tray, it came out in less than a minute. I pulled it out from the front rather than the rear as described in the instructions...after removing a ground wire not mentioned in the instructions. I had planned to use a Dremel tool to cut the OEM tray, but ended up using a very small hand saw...very fast and easy. The Dremel tool did make short work of cutting the firewall bolts.

I also encountered an issue with the factory wiring harness putting pressure on the relocated evap solenoid and oil dipstick tube. The factory harness is very stiff and took considerable pressure to bend it away from those items. When I finally got around to re-installing the engine cover, the wiring harness was in the way at the rear corner. Once again, more bending of the harness.

I was also unable to get the negative terminal all the way onto the cranking (rear) battery on the day of the install. I had to purchase some terminal spreaders the next day.

The first few times I drove it, the positive terminal worked loose from the cranking battery. I did even more bending of the factory harness, loosened and re-tightened the terminal, and tightened the bolts holding the top plate of the Genesis kit. No problems since.

So the batteries you installed have side posts also? I think I'd be very worried about those eventually shorting out against the firewall or the tray. There is soooo little clearance there.

I installed dual batteries on my '03 Rubicon and it was a much easier project, despite not having a pre-wired kit. While you may get lucky and be able to do this install in a couple of hours, allow more time in case you run into issues such as I did.

The Genesis kit is, without any doubt, the best dual battery tray out there. I think it is the ONLY system that comes completely pre-wired. You might be able to piece together a dual battery system for less money, but I don't think you'd actually save that much by buying individual components. Genesis Offroad is a small company with great customer support. Shane was very interested in the issues I encountered and seemed eager to improve the product and the instructions.
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Old 03-17-2014, 01:12 PM   #5
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I will monitor the side terminals but I don't see an issue. The front still have the plastic covers on them. The rears I will watch but they are up against the foam on the fire wall so I don't think there will be an issue as the batteries are not moving around.
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Old 04-15-2014, 08:25 AM   #6
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I just ordered one of these setups. Looks to be the best on the market and I loved seeing the time and energy they put into thoughtful design.

Should come in a few days. Looking forward to the install. Hope it goes smoothly!
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Old 04-15-2014, 11:24 AM   #7
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What do you have to cut on the stock tray?
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Old 04-15-2014, 01:50 PM   #8
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The only left from the stock tray is the mount for the air cleaner assembly.
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Old 04-18-2014, 03:37 PM   #9
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Got the Genesis in and installed yesterday. Went very smooth. I printed and pre-read the directions a couple times. The only thing that seemed weird was the evap solenoid. I had to read that part a couple tikes as it seemed odd.

It all worked out and went quite well. Fitment was VERY good. Glad I opted for this tray/setup.

Total install probably two hours. Make sure you have a cutting tool that can get back to the firewall bolts. I though I'd use a hacksaw on it, but couldn't get it back there so I had to take a break and run to grab a grinder/saw. Worked a charm!

I went with the Optima red top for the starting battery and the yellow top for the accessory battery. Both group 34 as specified. They both slid right in. Didn't think dual batteries would be this easy with the 3.6l.
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Old 07-15-2014, 08:45 PM   #10
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Sorry to dredge up an old thread but hopefully that is more acceptable than starting a new one on the same topic.

I'd just like to see if anyone has any further input on this kit. I'm about to pull the trigger on it in the next few days and just wanted to see after some time if there was any feedback.

Thanks for any advice!
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Old 07-27-2014, 04:28 PM   #11
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Having had it for a few months now, I'd still say it's the best kit in the market. Pricey, but worth it if you want the best.

I no longer worry about power in the backcountry or getting stranded. Really a great, well-engineered modification and great safety tool.
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Old 07-27-2014, 04:36 PM   #12
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This will be my next big expenditure, I worry using the winch with the stock setup.
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Old 07-27-2014, 04:43 PM   #13
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Very nice set up.. I'm still in decided on this think I am.going to build myour own set up.
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Old 07-27-2014, 04:49 PM   #14
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Thanks guys, officially added to my list. Probably my first real mod.
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Old 07-27-2014, 05:04 PM   #15
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This may be a stupid questions.. But benefits of running dual batteries??

More lights? Other accessories?..

Like I said probably a stupid question so be nice haha
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Old 07-27-2014, 07:44 PM   #16
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Quote:
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This may be a stupid questions.. But benefits of running dual batteries??

More lights? Other accessories?..

Like I said probably a stupid question so be nice haha
I am wondering the same thing, so I think it's a good question!
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Old 07-27-2014, 07:46 PM   #17
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This is on the built list, after the front air locker.
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Old 07-27-2014, 08:00 PM   #18
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Quote:
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This may be a stupid questions.. But benefits of running dual batteries??

More lights? Other accessories?..

Like I said probably a stupid question so be nice haha
I had them on prior rigs for both redundancy and the things you mentioned as well as being a very expensive tow/jump away from help. Overall peace of mind I guess.
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Old 07-27-2014, 08:04 PM   #19
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That makes since too.. Don't want to be stranded.. I am a somewhat new keeper and just learning all I can and adding to THE LIST
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Old 07-27-2014, 10:50 PM   #20
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Many "need" the dual setup because they wheel by themselves out in the middle of nowhere and are concerned about a battery failing and not being able to start their vehicle (or they wheel with friends but no one has a set of jumper cables). More reasons: Want to blast tunes all night (running off the AUX battery) and then still have juice in the MAIN battery to start the vehicle the next day; If you do much winching, dual batteries help power the winch. It is much easier on each battery to draw only 50 amps from each than trying to draw 100 amps from one battery; Many Amateur Radio operators like to run their radios off of an AUX battery and not worry about starting their vehicle (same as blasting tunes all night).

There's probably many more reasons....

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Old 07-27-2014, 11:09 PM   #21
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Many "need" the dual setup because they wheel by themselves out in the middle of nowhere and are concerned about a battery failing and not being able to start their vehicle (or they wheel with friends but no one has a set of jumper cables). More reasons: Want to blast tunes all night (running off the AUX battery) and then still have juice in the MAIN battery to start the vehicle the next day; If you do much winching, dual batteries help power the winch. It is much easier on each battery to draw only 50 amps from each than trying to draw 100 amps from one battery; Many Amateur Radio operators like to run their radios off of an AUX battery and not worry about starting their vehicle (same as blasting tunes all night).

There's probably many more reasons....

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Fridge/freezer! You forgot the most important reason for an overlander to run a dual batter setup.
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Old 07-27-2014, 11:18 PM   #22
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Quote:
Originally Posted by Wrong Way Hal View Post
Many "need" the dual setup because they wheel by themselves out in the middle of nowhere and are concerned about a battery failing and not being able to start their vehicle (or they wheel with friends but no one has a set of jumper cables). More reasons: Want to blast tunes all night (running off the AUX battery) and then still have juice in the MAIN battery to start the vehicle the next day; If you do much winching, dual batteries help power the winch. It is much easier on each battery to draw only 50 amps from each than trying to draw 100 amps from one battery; Many Amateur Radio operators like to run their radios off of an AUX battery and not worry about starting their vehicle (same as blasting tunes all night).

There's probably many more reasons....

Regards,
Redundancy is important for peace of mind and once you think about it, a second battery makes as much sense as a spare tire. My single battery failed at home in the garage, thankfully. The last thing you want is to be in the middle of nowhere and have an issue so easily avoidable. To me this is a must and follows the preparatory mindset of many Jeepers and one of my next mods.
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Old 07-27-2014, 11:39 PM   #23
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Redundancy is important for peace of mind and once you think about it, a second battery makes as much sense as a spare tire. My single battery failed at home in the garage, thankfully. The last thing you want is to be in the middle of nowhere and have an issue so easily avoidable. To me this is a must and follows the preparatory mindset of many Jeepers and one of my next mods.
This sums it up for me better than I did. It is why my first real thoughts weren't towards a lift or tires, it was batteries and extra fuel storage. But I will go as the sole vehicle sometimes and understand someone never alone might not concern themselves as much with these things.
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Old 07-27-2014, 11:46 PM   #24
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I installed mine this weekend with two Odyssey PC1500T batteries. Great Kit and easy to install.
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Old 07-28-2014, 07:13 AM   #25
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If you don't need the extra battery for something like a winch or fridge, and only need to start your Jeep if your stranded, is there any benefit to the dual battery as opposed to just carrying a portable jump starter?
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Old 08-09-2014, 06:56 PM   #26
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Got mine in this morning. Wasn't bad at all and I am really impressed with the kit.

No real issues and would have been pretty quick install had I not had a hell of a time getting the Christmas tree clips out.

Thanks to everyone in the thread for the feedback and Terry for starting it. Happy customer here. Now I can move forward with the electrical stuff I want to do.
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Old 08-09-2014, 07:05 PM   #27
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Do they provide any advantages on battery life?

It'd suck to do a mod like this and my only accomplishment being that I got to change two batteries every couple of years rather than one.
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Old 08-09-2014, 07:27 PM   #28
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Do Jeep batteries go bad that often that redundancy is even needed for peace of mind? Seems like having more than one spare tire would make more sense than an extra battery.
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Old 08-09-2014, 07:33 PM   #29
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Dual batteries are a great idea for people with additional gear running things like a winch, 50 inch light bar, front bar, spot lights, additional fogs,cb radios, and air compressors etc. considering how much current all of these draw at a given time. For running all of those accessories the dual batteries are good for peace of mind but if you're running no more than what you have stock and maybe one accessory or two you're good with just a single dependable battery. Wouldn't hurt to spend 60-70$ and get a portable jump starter though in the event you run it dry or if you want to make a new friend some day.
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Old 08-09-2014, 07:38 PM   #30
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Do Jeep batteries go bad that often that redundancy is even needed for peace of mind? Seems like having more than one spare tire would make more sense than an extra battery.
Lots of answers just a few posts up.

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