slipstream444

It's not for heat really, but for Hydrogen gas build up. Standard zero maintenance batteries vent hydrogen gas normally (not as much as older designs though). And as you can imagine, if you build up enough H2 in your trunk ... boom!
Most dry-cell batteries don't require venting.
Dry cell batteries are not necessarily new, but are becoming a lot more popular in street cars. You'll save a lot of weight by going to one, and the spare tire space will accommodate some of the wider/flatter models with higher CCA ratings. Expect to pay between $150-$200 depending on the size of the battery. The OEM size battery saves around 14 pounds I believe.

When I get back to the States, that's one of the things I'll be doing to my car. I just ran out of time before I shipped off for over 2 and a half years. I miss my S2000!

ideugene

I plan to do the same with my car as well. If you ever find a good grounding spot in the trunk post it here!

slipstream444

That's a good idea; however a good grounding point on his car will not measure exactly as the same point on your car. So while it's a great starting point, and very well may work just as well ... it's always important to test the resistance on your car.
The variables are caused by differences in spot welds throughout the body, differences in the steel and other alloys, the amount of body bonding compound, corrosion and the actual electrical path that point will subsequently 'choose' through your car.
In cars past where I've relocated the battery or needed a solid grounding point for a high power amp, I've usually used at least two points to ground. However you may not need to do this

SoCalIsMyLife

So how am I supposed to "properly vent" the battery if I put it in the wheel well?

xman03

Get the Braille mini battery and call it a day, 11lbs, works in all conditions.

Billman250

Venomous S has his in the trunk.

PilotKD

I've got an Optima yellow top dry cell in my S and plan on putting it in the trunk when I get my BR Supercharger.

SPECIAL-OPS-S2K

I'm curious... I have some 4ga wire from amp installs I have done the past and I was going to use this for my battery relocation project. Would that suffice?

Bringing back an OLD thread!

SheDrivesIt

Too small, I'd say.

Ilike2DRIFT

I just put my battery in the trunk last week. I went through a hole that was allready in the firewall on the passenger side. I initially wanted to mount the oem battery in the spare tire location, but it would fit there. So i just put in on the passenger side of the trunk. I'll post some pics up later if you would like.