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I recently was updating my stereo and decided to relocate my battery to the rear of the car for balance. I wanted to keep a full size battery to fit my general use of the car. It was a good time to relocate since I was going to be running a power wire to back for the amp anyway. Since it's a coupe, I wanted to seal the battery off from the passenger compartment. I planned on using the center well for a stealthbox for the subwoofer, so decided to use the passenger side cubby for the battery. I recently purchased a Deka Intimidator 9A78DT Group 34/78 AGM Battery for the oem mounting location, so didn't want to buy another battery to fit the rear. I probably should have just got an optima red top, since it would have fit the mount easier, but saved a few bucks in my situation. I bought an optima battery mount off ebay and modified it a bit to fit my battery, and into the cubby. I made a bracket out of angle iron underneath the cubby that tied the battery bracket into the frame, so the battery doesn't go flying around in a wreck.
To seal off the battery to the passenger compartment, I fabbed up an aluminum cover. It screws down tight and the cubby hole is well vented to the outside. I used gland seal connectors for all my wire pass-throughs to the cubby. Grommets would have been fine, but I like how the gland seals tighten up to hold the wires in place. I added a 100a breaker for my amplifier and a 200a breaker for the main 0 guage power wire running up to the front of the car. It's all set up to easily add a solid state relay shutoff switch whenever I feel it's needed. Grounded to the frame in the rear.
Figured I'd post this for the next guy looking to do something similar.
Battery relocation to rear coupe.
