What Size Battery Is in the 2012 Audi A5?

The 2012 Audi A5 typically uses a 12-volt AGM (Absorbent Glass Mat) battery in Group Size H7 (also known as 94R), with around 80–95 Ah capacity and approximately 800–950 CCA, though exact specs can vary slightly by engine, trim, and market.

Understanding the 2012 Audi A5 Battery Specification

The 2012 Audi A5 was offered with several engine options (including 2.0 TFSI and 3.2 FSI in many markets) and, in some regions, diesel variants. Despite these differences, most models from this generation share a broadly similar battery specification, because Audi designed the electrical system around high-demand features such as start-stop systems (on some trims), advanced infotainment, and electronic driver aids.

Typical Factory Battery Size and Type

For most 2012 Audi A5 models, the factory-style replacement battery falls into these key specifications:

The following list outlines the main technical attributes that matter when selecting a battery for a 2012 Audi A5.

• Battery Group Size: H7 / 94R (commonly used across many Audi, BMW, and Mercedes models)
• Voltage: 12 V
• Chemistry/Type: AGM (Absorbent Glass Mat) is recommended and often originally fitted
• Capacity (Ah): Typically around 80–95 Ah
• Cold Cranking Amps (CCA): Generally in the range of about 800–950 CCA, depending on brand
• Location: Usually mounted in the trunk (boot), under the floor panel on most A5s of this generation

Taken together, these specifications ensure the battery can handle the high electrical load of the Audi A5’s systems, offer reliable cold-weather starting, and integrate correctly into the vehicle’s charging and monitoring electronics.

Why an AGM Battery Is Recommended

The 2012 Audi A5’s electrical system is designed with energy management in mind. Many examples are equipped with start-stop technology and regenerative charging, both of which place greater demands on the battery than traditional setups. AGM batteries are more robust for these conditions than conventional flooded lead-acid batteries.

The following list explains the reasons AGM technology is preferred in a vehicle like the 2012 A5.

• Deep-cycle capability: AGM batteries cope better with frequent partial discharges and recharges.
• Higher vibration resistance: Important for long-term durability in a performance-oriented chassis.
• Low self-discharge: Helps maintain charge when the vehicle is parked for extended periods.
• Spill-proof construction: Safer in a trunk-mounted installation and during impacts.
• Compatibility with energy management: Better suited to advanced alternator control and start-stop systems.

Because of these advantages, using an AGM battery that matches the original specification helps maintain reliability and prevents issues with the car’s electrical management system over time.

Variations by Engine, Market, and Equipment

While H7/94R AGM is the most common fit, small differences can occur depending on the exact configuration of the 2012 Audi A5. Factors like engine type, climate package, and optional equipment can subtly shift the ideal battery rating, especially in terms of capacity and CCA.

Gasoline vs. Diesel and High-Load Configurations

Diesel engines and heavily optioned cars (for example, with advanced sound systems, extensive driver-assistance packages, and cold-weather equipment) may ship from the factory with higher capacity or higher CCA batteries within the same physical group size.

The points below summarize how vehicle configuration can influence battery specification for a 2012 A5.

• Gasoline models (e.g., 2.0 TFSI): Commonly use an H7 AGM around 80–90 Ah, ~800–900 CCA.
• Diesel models (where available): May use similar H7 group but often with slightly higher CCA for cold starting.
• Cars with start-stop: More likely to require AGM specifically and a battery coded to the vehicle’s energy management module.
• Cold-climate packages: Sometimes paired with higher CCA batteries for improved winter performance.
• High electrical load (premium audio, many accessories): Often benefit from the upper end of the Ah range within the same group size.

Even with these variations, the physical footprint and terminal layout stay within the H7/94R family, which simplifies replacement while allowing flexibility in exact performance ratings.

How to Confirm the Correct Battery for Your Specific A5

Because production changes, regional differences, and previous owner modifications can alter what’s currently in the car, it’s wise to verify the needed battery size directly on your vehicle rather than relying only on generic guides.

Steps to Check Your Existing Battery

Owners can inspect their current battery or vehicle documentation to confirm the precise specification before buying a replacement.

The following steps outline how to identify the correct battery size in a practical way.

1. Access the battery: Lift the trunk floor panel to expose the battery compartment.
2. Read the label: Note the group size (often printed as 94R or H7), capacity (Ah), CCA, and whether it is marked AGM.
3. Check the owner’s manual: Look for the section on battery or electrical system, which often lists recommended specs.
4. Use VIN-based lookup: Many dealer parts systems and major auto-parts retailers can pull the exact spec for your A5 via the VIN.
5. Compare new battery dimensions: Ensure the replacement matches length, width, height, and terminal orientation.

Following these steps minimizes the risk of buying an incompatible battery and helps ensure that the vehicle’s energy management system continues to operate correctly.

Battery Replacement and Coding Considerations

On the 2012 Audi A5, the battery is integrated into the vehicle’s energy management system, which monitors state of charge and controls charging behavior. When replacing the battery—especially if the capacity or type changes—coding or registration via diagnostic tools is often recommended.

Why Battery Coding Matters

The car’s control module tracks battery age and condition over time. Installing a new battery without telling the system can lead to suboptimal charging and reduced battery life, and in some cases, warning messages.

The list below explains what owners should keep in mind when replacing the battery on a 2012 A5.

• Battery registration: Using tools compatible with VAG (such as VCDS, ODIS, or capable aftermarket scanners) to inform the ECU of a new battery.
• Correct battery profile: Ensuring coding matches the battery type (AGM vs. flooded) and approximate capacity (e.g., 80 Ah vs. 95 Ah).
• Professional installation: Many independent European specialists and dealers can replace and code correctly in one visit.
• Avoiding underspec units: Installing a lower-capacity or non-AGM battery can cause quicker degradation and random electrical glitches.

Proper coding and correct specification help the replacement battery last longer and keep all of the Audi A5’s sophisticated systems functioning as intended.

Summary

The 2012 Audi A5 typically uses a 12 V AGM battery in Group Size H7 (94R), with a capacity in the 80–95 Ah range and around 800–950 CCA, installed in the trunk. While this H7/94R AGM format is standard for most trims and markets, variations in engine type, equipment, and climate can slightly alter the exact rating. Verifying the label on your current battery, consulting the owner’s manual, or using a VIN-based parts lookup is the most reliable way to confirm the precise specification, and any replacement should ideally be coded or registered to the vehicle’s energy management system for optimal performance and longevity.

What battery do I need for my Audi?

Your owner’s manual should tell you what Audi battery you need – or you can check it instantly by using our battery search tool at the top of this page. Our battery test technicians can also advise you. Whatever the answer, we’re likely to have you covered.

What size battery is in the 2013 Audi A5?

MTP-95R/H9.

What battery for Audi A5?

Petrol

	Engine	Battery
A5	1.8 TFSI Hatchback	027
A5	2.0 TFSI Convertible	096
A5	2.0 TFSI Convertible	096
A5	2.0 TFSI Coupe	096

What kind of battery does a 2012 Audi A5 take?

Duralast Gold Group Size 94R H7 Battery H7-DLG.