For months now I have had several items lying around in the living room waiting to be installed. Lately, I have been trying to do something every day to make room again and to spice up the NSX a little bit. Yesterday, it was time for the Odyssey 680 battery and it's battery mount from Dali Racing. This is a much smaller and lighter battery than usual which is the exact reason I bought it.
I had already removed the sparewheel and its bracket last week to the nose of the car was already looking empty.
First thing we did was disconnecting the cables with a 10mm spanner. There is not enough room to use a socket there.
After that, the battery mount-cover holdinging the battery in place is taken off, also using a 10mm spanner.
Next step is the removal of the battery. This required a good wide stance to lift because it is quite heavy. The picture shows the difference between the old one and the Odyssey 680.
Next in line is the mounting of the battery mount. This special mount is necessary to securely fix the 680 in place. For this, you have to drill four 6mm holes in the bottom-plate. You have to position the mount carefully because otherwise you might end up drilling holes in the supporting beams as well. As can be seen from the pictures, I found this out AFTER drilling the first hole. No harm done however and the holes themselves were drilled pretty quick.
Now, you have to put the mount together. It has two vertical aluminum bars that are fix to the bottom with four Allen bolts. Tighten these good because they have to catch every move the battery wants to make while driving. It is a good time to mount the battery now because once fixed you won't be able to do it.
Now, lift the whole assembly up and put in in the car. Make sure you position the + and - side of the battery correctly (+ is on the drivers side).
Now fasten the mount with the four supplied Allen bolts and nuts. The nuts are of the type with a plastic which tighten themselves so they won't fall off easy. The two left-side bolts I could do while leaning over the front-bumper but if you do it that way, please make sure you have a towel of blanket to lean on to prevent your expensive paint from scratching. For the right side bolts however, I had to crawl under the car and that required putting the car on a jack-stand. Doing that only on the drivers side already created enough room for me. Now, fix the last two bolts and make sure they are tight.
Then, lower the car, clean the cable-connectors with a clean rag and connect them to the battery. And that, gentlemen, is the moment you find out that your car-alarm with it's 130Db siren about 6 inches from your ear is working properly
As an extra safety measure, I tried to fix the new battery using the old mount-cover but this didn't work because the rod are too long. After making sure everything was tight and took the NSX out for a drive and on a piece of quit road stepped on the brakes hard to test things. The Odyssey can move a little bit in it's mount but the mount self didn't seem to have any problem with the forces put on it. Maybe, as an extra measure, you could use some Locktite to fix the Allen-bolts.
With the new small battery and without the spare the front looks very empty and open now. In all, the operation stripped another 20.3 Lbs (9.2 Kg) from the car.
Original Honda battery 37.1 Lbs (removed)
Original Mount 0.4 Lbs (removed)
Odyssey 680 battery 15.7 Lbs (added)
Ali-Dali-mount 1.5 Lbs (added)
Total work, about 1.5 hours
Below I have added several pictures from the install.
I had already removed the sparewheel and its bracket last week to the nose of the car was already looking empty.
First thing we did was disconnecting the cables with a 10mm spanner. There is not enough room to use a socket there.
After that, the battery mount-cover holdinging the battery in place is taken off, also using a 10mm spanner.
Next step is the removal of the battery. This required a good wide stance to lift because it is quite heavy. The picture shows the difference between the old one and the Odyssey 680.
Next in line is the mounting of the battery mount. This special mount is necessary to securely fix the 680 in place. For this, you have to drill four 6mm holes in the bottom-plate. You have to position the mount carefully because otherwise you might end up drilling holes in the supporting beams as well. As can be seen from the pictures, I found this out AFTER drilling the first hole. No harm done however and the holes themselves were drilled pretty quick.
Now, you have to put the mount together. It has two vertical aluminum bars that are fix to the bottom with four Allen bolts. Tighten these good because they have to catch every move the battery wants to make while driving. It is a good time to mount the battery now because once fixed you won't be able to do it.
Now, lift the whole assembly up and put in in the car. Make sure you position the + and - side of the battery correctly (+ is on the drivers side).
Now fasten the mount with the four supplied Allen bolts and nuts. The nuts are of the type with a plastic which tighten themselves so they won't fall off easy. The two left-side bolts I could do while leaning over the front-bumper but if you do it that way, please make sure you have a towel of blanket to lean on to prevent your expensive paint from scratching. For the right side bolts however, I had to crawl under the car and that required putting the car on a jack-stand. Doing that only on the drivers side already created enough room for me. Now, fix the last two bolts and make sure they are tight.
Then, lower the car, clean the cable-connectors with a clean rag and connect them to the battery. And that, gentlemen, is the moment you find out that your car-alarm with it's 130Db siren about 6 inches from your ear is working properly
As an extra safety measure, I tried to fix the new battery using the old mount-cover but this didn't work because the rod are too long. After making sure everything was tight and took the NSX out for a drive and on a piece of quit road stepped on the brakes hard to test things. The Odyssey can move a little bit in it's mount but the mount self didn't seem to have any problem with the forces put on it. Maybe, as an extra measure, you could use some Locktite to fix the Allen-bolts.
With the new small battery and without the spare the front looks very empty and open now. In all, the operation stripped another 20.3 Lbs (9.2 Kg) from the car.
Original Honda battery 37.1 Lbs (removed)
Original Mount 0.4 Lbs (removed)
Odyssey 680 battery 15.7 Lbs (added)
Ali-Dali-mount 1.5 Lbs (added)
Total work, about 1.5 hours
Below I have added several pictures from the install.
