anyone running dual batteries in their 55? Only threads i can find are pretty old and products not available anymore. My 55 has AC and all emissions stuff still on the motor so it's pretty tight in the bay. I'd love to see what you have done.
FJ55 Dual Battery Tray
- Thread starter residualboulders
- Start date
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One thing you can do is turn them 90 degrees to how John has them. THere are some group sizes that are not very long and you should have enough room. I search this chart to see the size of battery that would work.
www.batteryequivalents.com
I believe I planned on doing a group 28 Optima.
BCI Battery Group Size Chart
Knowing exact BCI group battery size helps finding new battery replacement, however, knowing just BCI group size is often not enough...
www.batteryequivalents.com
I believe I planned on doing a group 28 Optima.
fj55-100
SILVER Star
I put mine in back on the passenger side up between the frame and the body a group 24f deep cycle one fits perfect , made a double box that the center drops out of ,to access it . no pic on file on this pc but i can snap a few tonight
No picture but you can see one on each side in this video of my first engine start up.
bobm
WTF, WTF, WTF!!!!
I used the stock tray with dual Optimas ( i run oltimas in everything no problems) I just cut the flanges and swapped the sides. They're both going under rear seat soon.
Yes, Bobm has it the way I imagined. I would look into using a deep cycle that runs all of your goodies and regular high CCA battery just for starting. That's what I took as a good setup but there may be other ideas.
- Thread starter
- #7
thanks guys!
cool. didn't know two would fit in the stock tray. I'll have to look into that. I bought a dual battery tray my bro put in his 45, soon as I get that i'll try it out and see if it will work in the 55, if not I'll put it in my 40. Hadn't thought of putting one on the drivers side @J Mack i'll have to take a look and see if I can get that to work. Mine still has all the emissions and everything on the motor, looks pretty much untouched since new. Kinda wanted to keep it that way, but would like the additional batter for winch and accessories. Thanks for the help everyone.
cool. didn't know two would fit in the stock tray. I'll have to look into that. I bought a dual battery tray my bro put in his 45, soon as I get that i'll try it out and see if it will work in the 55, if not I'll put it in my 40. Hadn't thought of putting one on the drivers side @J Mack i'll have to take a look and see if I can get that to work. Mine still has all the emissions and everything on the motor, looks pretty much untouched since new. Kinda wanted to keep it that way, but would like the additional batter for winch and accessories. Thanks for the help everyone.
bobm
WTF, WTF, WTF!!!!
Someone on here was also building a Stainless steel battery tray! Just don't remember who but its NICE 
Yeah but is he moody?
bobm
WTF, WTF, WTF!!!!
Of Course they are 
I bought the dual ss tray from that moody guy and he had to put the tray together from other tray pieces, in other words he quit making the 55 tray. I'm with Bob on the optima batteries, no problems in many years.
Not sure anyone makes a bolt in one for FJ55.
Here is one that I had fabbed for two of my FJ55s:
Here is one installed:
The other is currently on the shelf waiting for one of two FJ55s to get further along before install
And just for giggles, here is before any bending:
Those picture are in my Trail55 build thread around page 40
What thickness is that material? I had considered using the 1.6mm sheet i have here to fold up a battery tray..
Does anyone put any bracing up underneath? Mine is mounted on side like everyone else’s and I always worry about that kind of weight with no support under.
Not mine, just four bolts and the one side sits on the inner fender.
@residualboulders running two batts: one in stock location and second in a Warn batt box mounted passenger rear interior corner. Used a Powermaster battery isolator under hood to tie the system together. Not a dual tray but rather dual location
PabloCruise
SILVER Star
bobm
WTF, WTF, WTF!!!!
Deo did 1!
I put an interstate group 31 battery up in the void behind the rear wheel passenger side. Made the box out of 1/8” steel plate. Bolted to the frame. Not the easiest to access but only when it needs replacing. Use a floor jack to stuff it up in there.
looked for the stash of photos to contribute but no luck. My build thread has them I think. Tales, trails and trials.
looked for the stash of photos to contribute but no luck. My build thread has them I think. Tales, trails and trials.
RUSH55
SILVER Star
Just thought of this - you guys remember Craig’s storage box he put under the back seat? Same thing could possibly be done to hold a couple batteries, and divided off with a small storage area. How nice would it be to have the batteries completely out of the engine bay?(!)
