In brief, the 2011 Infiniti G37x uses a standard 12-volt lead-acid car battery. The typical replacement is a Group 35 battery, but you should verify the exact specification from your vehicle’s label or manual.
Battery type and size
The G37x relies on a conventional 12-volt automotive battery to start the engine and power the car’s electrical systems. The most common replacement battery for this model is Group 35, a widely used size for mid‑size sedans of that era. When shopping, aim for a battery in the Group 35 family with roughly 600–700 cold-cranking amps (CCA) and a reserve capacity around 90–110 minutes to meet the car’s electrical demands.
How to confirm the exact spec
To be certain you buy the correct unit, check the label on the current battery for its group size, CCA, and RC. You can also consult the owner's manual or contact an Infiniti dealership or reputable parts supplier with your VIN; they can pull the exact OEM specification for your car’s market and production date.
Replacement tips and compatibility
When replacing, select a Group 35 battery with similar CCA and RC ratings and ensure the battery’s terminal configuration matches your car’s wiring harness. If you operate in extreme temperatures, you may opt for a higher CCA within the Group 35 range or a battery designed for better cold-weather performance. Reinstallation should include using the proper hold-down bracket and reconnecting terminals in the correct order (negative first, then positive).
Summary
Overall, the 2011 Infiniti G37x uses a standard 12-volt lead-acid battery, with Group 35 being the common replacement size. Always verify the exact specifications on the existing battery label or through Infiniti’s parts resources, and choose a Group 35 battery that matches or exceeds the OEM CCA and RC ratings for reliable starting and electrical performance.
What year G37 to stay away from?
Like most cars, the G37 had some improvements over its lifespan, so the worst Infiniti G37 years are the earliest—in this case the 2008-2009 cars. We're talking small differences, though, because the car changed little during its seven-year production run and it has generally proved reliable.
What type of battery does a G37 use?
Optima – Red Battery : Group Size 35, 720 CCA, 910 CA, 90 Minute Reserve Capacity (Part No. 35)
What type of battery does a 2011 Infiniti G37 take?
Optima Red AGM Top Post Battery Group Size 35 720 CCA 90 Minute RC - RED35.
How much is a battery for a 2011 INFINITI?
How much to replace the battery in my INFINITI? Depending on power, size, and quality, prices for a replacement car battery range from about $45 to $250.