Will a Group 66 or 65 battery work in a 18 JLU? I have access to a new one, hate to waste it.
RichD Well-Known Member First Name Rich Joined Jul 22, 2018 Threads 44 Messages 267 Reaction score 190 Location Boston Vehicle(s) 2018 Sport S May 29, 2026 Thread starter #1 Will a Group 66 or 65 battery work in a 18 JLU? I have access to a new one, hate to waste it. Sponsored
Will a Group 66 or 65 battery work in a 18 JLU? I have access to a new one, hate to waste it. Sponsored
Terrymo Well-Known Member First Name Terry Joined Jun 17, 2022 Threads 48 Messages 10,694 Reaction score 33,033 Location SoCal Vehicle(s) 2023 JLURXR 3.6 ET Clubs May 29, 2026 #2 Check here or one of the many battery group size charts for dimensions and cold cranking amps and amp hours specs. Compare the factory battery to any alternative you’re considering and you will have an answer https://batterycouncil.org/wp-content/uploads/2023/10/BCI-Group-Sizes.pdf
Check here or one of the many battery group size charts for dimensions and cold cranking amps and amp hours specs. Compare the factory battery to any alternative you’re considering and you will have an answer https://batterycouncil.org/wp-content/uploads/2023/10/BCI-Group-Sizes.pdf
Gaiden414 Active Member First Name Jeff Joined Jul 23, 2025 Threads 0 Messages 30 Reaction score 22 Location NC Vehicle(s) 2019 JLU Sahara May 29, 2026 #3 Don't think it is a good idea, and likely wont fit (width). Group 65 can come in both flooded and AGM it seems, but size and hold down still a concern Sponsored
Don't think it is a good idea, and likely wont fit (width). Group 65 can come in both flooded and AGM it seems, but size and hold down still a concern Sponsored