348 348 Battery Options (1990- Driver's side Rear Install)

Hi All,

Searched on here but all feedback i'm finding is a few years old.

My battery is toast, and i'm looking for some options for a good battery that fits easily, is lighter then the traditional battery, but still has good cold cranking amps and will last for years.

Anyone have any recent experience? If so, please share part number and size as well!

Thanks!

 

From my race cars, where i've used all kinds of super lightweight small race batteries, I feel like the new techno-batteries seem to not have the life span of a traditional battery.

 

I'd like to keep weight down, since I do track the 348 Challenge, but also drive it on the street often during the decent weather season. But curious to hear all recent experiences and new tech, as well as old tech!

 

Thanks Lucas. That's installed in the rear?

 

https://www.pegasusautoracing.com/productdetails.asp?RecId=31531&utm_source=google&utm_medium=cpc&utm_campaign=1178-H524RS&gclid=Cj0KCQjw2v-gBhC1ARIsAOQdKY1JkB1lT7UoOxuwFP8fclQPkQItpEr0nvdPiwGgwVhYQ_xJbgvvgesaAt31EALw_wcB

$597 at Pegasus

Note the notes on the link above- especially note #3

Note 1: This battery should NEVER be used in a total-loss electrical system. This battery will not deliver a sustained current.

Note 2: This battery will not work on a modern vehicle with a stop-start system or a "smart" charging system. These systems are specifically set up to drain the battery down below the 12.4V shut-off point, which will trigger the Re-Start system to turn the battery off.

Note 3: Never use a trickle charger or standard lead-acid battery charger on a LiFePO4 battery.

Note 4: DOT regulations will only allow us to ship Antigravity batteries via UPS Ground service. UN regulations will NOT allow us to ship Antigravity outside of the 48 contiguous states. USPS will not accept lithium batteries for transport by mail.

 

Haha! No worries!

 

A couple of quick questions:
- Is the OEM battery size for the driver's side rear location a group 34R?
- If so, would an H5 / Group 47 work back there?

Antigravity's closest size is the H5 / Group 47

I'm not near the car until the weekend so can't measure the tray and hold downs!

Group 34R dimensions are (L x W x H): 10.25 x 6.8125 x 7.875
H5 Group 47 dimensions are (L x W x H): 9.5 x 7 x 7.5

So slightly smaller in length and height, but 1/8" wider

Thinking of buying this: https://www.pegasusautoracing.com/productdetails.asp?RecID=31531
Along with the appropriate Lithium Ion charger

Thanks for any help!!

 

I spoke to my mechamnic who confirmed the 34R is the OEM size for the rear battery location. He also advised he thinks the H5 / Group 47 should fit with no issues, so I went ahead and ordered on along with the charger. Should arrive before the weekend. I'll advise as to fitment when I install and post some pics.

Feel free to post any additional info you guys / gals may have- never a bad thing to have more info on this topic as the battery technology continues to evolve!

 

So that's L x W x H: 10.95" x 6.89" x 7.48"

Thanks for sharing!

 

Strictly for comparitive purposes! My ability to look at mm and compare to inches is limited!

 

Thanks so much, Jeff! Super helpful!

 

New Antigravity battery installed. Car fired right up no problem.

Also purchased the requisite lithium ion specific battery charger. It weighs almost nothing! Fit perfectly.

Install was easy- simply pulled LR wheel and tire, removed the rear portion of the inner fender well, and old one slid right out, new one slid right in. At least 30lbs lighter (probably more).

I like this Antigravity because it has what is basically an automatic relay that opens when the charge drops below a minimum threshold so it doesn't damage the battery, and leaves you with enough charge to start the car a few times. Then you press a 'restart' button on top of the battery (or the button on the remote key fob it comes with) to close the relay and hit the road.

I'll let everyone know how this works over time. I'll be tracking the car tomorrow, so hopefully no issues.