Looking for ideas and opinions on relocating the battery to below the tub

Why? Its real hard to get a boost if its down there or something goes wrong. I had 2 on the forewall then one behind each front seat ont he floor and now they are going in the back.... Just use some big battery cable.

I'm just brainstorming to get some of the weight moved lower and more evenly distributed.

Why did you have 4 batteries in your Jeep?

I am going to guess that his location might be a hint as to the need for four batteries? Long cold Ontario winters with a winch might need four and if he is serious about needing to be jumped, I dont think I would be interested in being out in that weather...haha

I didn't have four batteries i just kept moving them. First was the firewall which didn't like 80+lbs hanging off it. I switched to propane and needed the firewall space for the propane stuff. That gave me the bright idea of moving the batteries to a nice low spot behind the front seats. They just got in the way there but worked well. I have since stretched the jeep 18" CJ6 style and now I have room for everything.

behind the passenger seat is a good location for a second battery

what about putting it under the seat similiar to the hummers, make a box and put the seat sliders directly on top of the box.

thats alot of work. is the payoff worth it? am curious.

what about putting it under the seat similiar to the hummers, make a box and put the seat sliders directly on top of the box.

Then you'd have to make a new mount to lift the seat up off the batteries.

Mine is on the floor right behind the passenger seat. About as low as it can go without sinking it.

I tied it in with large two prong plugs commonly used with detachable winches.

Those large plugs come on forklifts etc to disconnect/reconnect battery source.

behind the passenger seat is good, I used a few pieces of different length tubing to sit it on so it sits level and the hold-down clamp bolts run thru two of them thru the tub. the prong idea is good for wiring it in, or you can get a good price on a dual battery switch at a boat dealer (much cheaper than a Painless kit)


Mine is on the floor right behind the passenger seat. About as low as it can go without sinking it.

I tied it in with large two prong plugs commonly used with detachable winches.

x2. how could it be worth the effort :shaking: behind the passenger seat you use up some storage space but put it under the seat and you lose that storage space too. actually I can t even picture how high you'd have to raise the seat to get a battery to fit under, wouldnt your head be higher than the roll bar/cage ?

thats alot of work. is the payoff worth it? am curious.

It would be alot of work (u asked for ideas not things already done) and it wouldn't raise the seat any as the idea would be sinking it into the floor low enough to clear seat sliders. hmmwv's use 2 6tl batteries in this location and those are big square batteries little longer then the optima battery and the same width(hence square) similiar height. I used to own an old military chevy 1 ton and I replace one of the 6tl's with 2 optimas on the same tray with no modification beyond adding battery cables.
Put the sliders on a frame that ties into the rollcage (seen this on a few vehicles here and in person)build the frame to tip/tilt forward or back so u can access the battery.

i put the battery in my buddys jeep where the glove box once was
just used the gm style batery termanals on an optomun or whatever its called
took like an hour to make and really didnt cost anything
other than the batery
it was nice cuz it kept it outa the way and the cables short for less volt drop

great idea and good use of the otherwise pretty much useless glove box...

i put the battery in my buddys jeep where the glove box once was
just used the gm style batery termanals on an optomun or whatever its called
took like an hour to make and really didnt cost anything
other than the batery
it was nice cuz it kept it outa the way and the cables short for less volt drop

Isnt the general rule of thumb to keep the battery as close to the starter as possible to limit the amount of resistance?

Mines in the back below the tub. Been there several years and an excellent spot in my opinion.
http://i17.photobucket.com/albums/b89/willysworker/Red%20Dog/hiddenbatterybox2.jpg
http://i17.photobucket.com/albums/b89/willysworker/Red%20Dog/hiddenbatterybox1.jpg
http://i17.photobucket.com/albums/b89/willysworker/Red%20Dog/seat1.jpg

You could fab up a box and sink it somewhere on the floorboard so that its behind the transfer case with the posts coming out of the bottom. That way a jump wouldn't be difficult and it'd be out of the way and low. Just put it in a location that its not hard to get to incase it dies. I've got an XJ and am considering sinking dual batteries under the bench seat in the rear with outside posts.

Isnt the general rule of thumb to keep the battery as close to the starter as possible to limit the amount of resistance?

its desirable to do because with the batery closer to the starter there is less voltage drop, making the starter have a lil more nut,
the farther away from the starter the heaver the gauge of wire so that there is less voltage drop

As much as I hate that it will make it harder to find in junk yards. Look at BMW 3 series. They have the battery in the trunk. The battery cable is nice and long and you can get a converter off the firewall that will allow you to plug in your stock cable to the extension. Then you have a + post up front to jump with. I use them in my buggy, willys, and BMW. It is a typical swap in the BMW to get the battery in the trunk for track days. At the local pull-a-part the cable and tabs runs about $4.

a cheap and easy way to get a + under the hood is to mount a new starter solenoid to the fender just like a stock CJ. Just attach the + from the battery to one of the posts and run a short cable from that post to the starter, alternator, fuse panel.... easy as pie.



mmmmm, pie :D

I built a box and put in the empty space of the rear fender. The rear axle is stretched 16" so the was quite a bit of space left over. To access it the lid is on top and is made from the piece i cut to for the battery to fit through. Cost was a couple small hinges and a latch, had some scrap sheet metal for the box.

I built a box and put in the empty space of the rear fender. The rear axle is stretched 16" so the was quite a bit of space left over. To access it the lid is on top and is made from the piece i cut to for the battery to fit through. Cost was a couple small hinges and a latch, had some scrap sheet metal for the box.

..So it's recessed into the rear fender from the inside and, when you look at the Jeep from the side, there's a visible box inside your wheel well? I don't think I'd like that, but I'd like to see pictures none-the-less.

I'll try to get some pics this weekend.