You MUST check your owner's manual. This will definitively state the correct battery group size for your specific year and model Commander. The group size is usually a code like "Group 65", "Group 78", etc. and is printed on the battery itself.
Alternatively, you can:
* Look at the battery currently in your Jeep. The group size will be printed on a label on top.
* Use an online auto parts store's website. Most major auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to search for batteries by vehicle year, make, and model. Entering your Jeep Commander's details will give you a list of compatible batteries.
Without knowing the year of your Jeep Commander, it's impossible to give you a precise answer. Using the methods above will ensure you get the correct battery for your vehicle.
