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-   -   R59 Restoration Battery Rebuild (https://www.yenko.net/forum/showthread.php?t=183708)

Lynn 10-15-2025 11:52 PM

I used a small rotary cutter, running pretty slow speed so the plastic didn't melt.

I drained the battery into a plastic tub, then neutralized with baking soda. Then dissolved baking soda in warm water and filled the battery past full. Then drained and flushed. PITA chiseling all the plates out.

TimG 10-16-2025 12:49 AM

Lynn, it's a royal pain chiseling, breaking, hammering, and prying all the plates out. The case is like eggshells, too. It took me four hours of work to gut the acid filled battery.

Lynn 10-16-2025 01:05 AM

Yes it is. I think I used a hack saw blade mounted in a compact holder to cut the braces out of the way. Getting that first cell of plates out is the worst. Gets better as you go along.

CamaroNOS 10-16-2025 11:49 AM

Maybe you have found a new calling in life?

Paul

Burd 10-16-2025 05:38 PM

I know a guy who uses a Miata battery inside. Me, a nice topper, instead of going through all that.

BCreekDave 10-16-2025 08:20 PM

If you go looking for a battery, the original battery inside was an Odyssey ODS-AGM28L

https://www.amazon.com/Odyssey-PC925...091GV65TW?th=1

Careful on the above link. There are two options for the battery and it switches the positive-negative posts.

It is BCI Standard size BTX30L

https://batterycouncil.org/wp-conten...roup-Sizes.pdf

68camaroz28 10-16-2025 11:12 PM

7 Attachment(s)
I've had excellent results with HD type batteries that have 500 plus cold cranking amps. Easy to replace also on original gutted batteries. I've gutted four and it is time consuming but never had an issue.


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