The 2009 Acura TL uses a standard 12-volt automotive battery. In practice, the factory-installed unit typically falls into one of two group sizes—Group 35 or Group 24F—depending on production date and trim. To be certain, check the battery label or the owner's manual for the exact specification.
Typical battery sizes for the 2009 TL
Because exact equipment can vary by production run, it’s important to confirm the correct group size before purchasing a replacement. The TL’s space and terminal layout are compatible with a couple of common sizes.
- Group 35
- Group 24F
Conclusion: To ensure proper fit and performance, match the replacement to the group size printed on your current battery or listed in the owner's manual. If in doubt, ask a parts retailer with your vehicle’s VIN for the exact OEM spec.
How to choose the right replacement battery
When shopping for a replacement, follow these steps to verify the correct battery for your car and your preferences.
- Check the current battery label to confirm the group size and terminal arrangement.
- Consult the owner's manual or contact a dealership or reputable parts store with your VIN to verify the OEM specification.
- Compare the physical dimensions to ensure the new battery will fit the tray and allow proper clearance for cables and clamps.
- Decide between a flooded lead-acid battery and an AGM (absorbed glass mat) option; AGM offers higher vibration resistance and longer life but at a higher cost.
- Ensure the replacement has the correct terminal polarity and positions to align with the car’s wiring harness.
- Have the new battery tested and properly installed; dispose of the old battery according to local recycling guidelines.
Conclusion: By confirming group size, dimensions, and the appropriate chemistry, you can select a battery that fits your 2009 TL and meets your performance needs.
Do I need an AGM battery for a 2009 TL?
AGM batteries are a viable option for the TL, particularly in vehicles subjected to frequent start-stop use or harsher climates. They’re more resistant to vibration and have lower self-discharge, but they come at a higher price. If you don’t require those benefits, a high-quality flooded battery that meets or exceeds OEM specifications is typically sufficient.
Summary
The 2009 Acura TL uses a 12-volt automotive battery and is commonly available in Group 35 or Group 24F. Always verify the exact size and specifications from the battery label or the owner's manual, and consider factors such as dimensions, terminal layout, and whether you want a flooded or AGM option. Following these checks helps ensure a proper fit and reliable starting performance for your TL.