Battery relocation to boot + Walbro install

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EVO-00X

EVO-00X

4G63T AWD CC COUPE
Joined
Jun 17, 2005
Messages
8,151
Location
Newcastle
OK, I'm gonna go for one last ditch effort to keep the battery in the engine bay (maybe next to the strut tower to allow for a cold air intake in the factory battery position) so I am trying to find out what car batteries guys are using other than the normal toaster size wet or calcium types, that are small enough to fit next to the strut tower. I would like to use a half size battery like a Pulse 400 or Odyssey PC680 but am reading and hearing mixed reviews about them :roll:

I dont want to be hooking up a battery on trickle charge every night and will not be running an extravagent sound system to draw lots of current. Is there actually such a dry cell/gel type battery that exists out there that's half the size of a normal battery thats small enough to fit in that location, that's not gonna give me the shits charging it up often? :lol:

I've looked at the Optima yellow tops but they are pretty big and heavy :roll:

cheers.
 
i run a optima red top in my boot.

its awesome, didnt start my car for 2 months and it cranked fine first time :)

they come with a 3 year warranty as well :)

get your car corner weighed and stick the optima in the lightest side at the rear :)
 
What have you heard about them?

I used one and it constantly went flat overnight.
I had to disconnect it from the car every night.

I'm now using the 925 battery (i think thats the one)
Its much better.
No more flat battery in the morning.
Much healthier cranking.

Size is doubled though.
 
I forgot where that "how-to" guide for the battery in the boot went. Anyone mind linking it to me? I'm going to give it a shot today. I'm very terrible when it comes to electrical issues involving the car, but if it's as easy as people say, I might have a shot.
 
I use small Dekka batteries. But they flatten in 2 weeks with the alarm on. I have flattened them down to 3 volts before and they charge back up no problem.
 
Yeah half the info I read about the small ones involves people saying they're crap and dont last a few days without the car starting (alarm or other small current draw drains them flat quickly) so they charge them up often, then other people say they have left their car alone for a couple of weeks and its fine. There's a lot of very mixed reviews on these things unfortunately that makes an informed decision pretty hard to make. I have an old calcium one in the garage thats lasted months on the ground! Its one of those one with a view window in the top that changes colour from green at full charge to black when its dead, its a great battery :D

Maybe I'll have to get one put in the boot (trunk). I already have a battery box and thick gauge cabling to do it as I was going to do it before, but was sussing out these half size ones first.
 
Ok, here is what my car/ battery (320cca I think) does.

With alarm armed - after 1.5 weeks, car will "just kick over and start. after 2 weeks, voltage is below 11 volts and the ecu will not start it.

With alarm disarmed (but immobiliser on) - same as above.

With the fuse for the alarm removed, but car locked, there is still some current drain (probably the central locking solenoids, dunno for sure as I haven't bothered to try and trace it) - car will still start after 3 weeks, but not after 4 weeks.

If I disconnect the battery, the voltage is still just above 12 volts after 2 months of sitting there.

It all really depends on what current draw there is when you switch the key off.
 
I use a PC680 in my car and I've had a mixed experience with them.

The car had one in it when I bought it, and it was pretty shit - About 4-5 days without starting and the car would need to be jump started. I bought an optima to replace it and put in the boot, but one day the PC680 shat itself and I needed the car right away so I just threw a new one in.

Anyway, the new battery has been great. The longest I've left the car without starting it has been about two weeks, but it started first kick. I'm not sure if my old battery was just shagged out (it was about 7 years old), or if they've changed something with them, but I don't think I'm going to bother changing it for a boot mounted optima now.
 
I am currently running the small Pulse battery. I last left the car sitting for a bit over 2 weeks with the alarm on and it started the car with no worries at all.
I haven't had any problems with it so far and am quite happy.
 
Well we decided to run the battery to the boot :)

Headin up to Robs on the weekend and making a wooden floor and routin the 2GA cable...

Whats the best way to route the cable??? through the car or under?? and should we use a fuse near the battery or a circuit breaker?? and what amp fuse/circuit breaker
 
Hang on, Tim and Steve gave some positive feedback about the smaller Odyssey and Pulse batteries above lol :lol: I dont think I'll ever let my car go more than 2 weeks without going for a drive.
 
GEEEEZ!!! your mind changes every 5 minutes :lol:

Battery to the boot FTW... more engine room :) plus where u usualy mount the smaller battery is where your oil catch can is gonna mount

IMO havin the battery in the boot doesnt use that much space at all.. mine is mounted right at the back so i can still use the front part for all the groceries :p
 
EVOCPE said:
Well we decided to run the battery to the boot :)

Headin up to Robs on the weekend and making a wooden floor and routin the 2GA cable...

Whats the best way to route the cable??? through the car or under?? and should we use a fuse near the battery or a circuit breaker?? and what amp fuse/circuit breaker
Click to expand...

chuck it in the boot! :p
run it through the interior, the last thing u want is exposed wires under the car, pretty simple, through the firewall, then have it swing down behind the pedals then straight down the drivers side near the door sills. Under the carpet all the way, up behind the back seat. (follow the same path as the other wires that are there) and bingo. 30min job. bit of fiddling with the interior, but easy.
 
just note that runnign a + cable next to speaker wires can result in that whining through your speakers...

circuit breaker are generally better as you wont have to keep on replacing fuses...

i run a jaycar 120A circuit breaker and have never had it trip out...

productLarge_9585.jpg


$$$ is higher than budget spec but you do get a bling digital voltage readout...
 
Tim that circuit breaker not only looks trick but its a great idea as you can use it as a battery switch and monitor the health of the battery as well :)

Just a question, with the 2 x 60A models, can I have something like the fuel pump power cable and an amp power cable coming out of the circuit breaker on the other end? If the battery is gonna go in the boot then I might as well hook up a power cable to the Walbro fuel pump relay and even power an AMP. If the cables can come out of the circuit breaker then it would save some more wiring hassles :)

The price for the circuit breakers are a good investment though IMO click here: click here

productLarge_9586.jpg
 
What is the cost of one those puppies?

I've been using a small Odyssey battery for a few years. I had to replace it once as the first had a fault. I have to be mindful when running the sub with the engine off...the battery struggles any longer than half an hr.
 
Missile said:
just note that runnign a + cable next to speaker wires can result in that whining through your speakers...
Click to expand...
i get a little bit of whining, but thats only when im on low volume (never) :twisted:

how have u overcome this?

EVOCPE said:
Dean.. thats the same route i took for my car and looks neat
Click to expand...
yup me too. nice and easy, no snake bumps under carpet :)
 

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