151R is the size you need. After 6 years of ownership (7 year old battery/car), my 12 volt battery finally gave out. Just replaced it this morning with this:https://shop.advanceautoparts.com/p/aut ... 7CL3*15597
Car came right back to life, although I lost my trip odometers and radio presets as I expected. The original battery was at 2 volts, having sat through some wild temperature swings for about a month. Trying to charge it, my charger would do a check and error out with "shorted cell", and all the higher the resting voltage would go was 11.2 volts.
Definitely going to be investing in solar maintainers.