What Size Battery Is in the 2014 Audi A4?

The 2014 Audi A4 typically uses a Group H7 (also known as Group 94R) 12‑volt battery, with a capacity in the range of roughly 80–95 Ah and around 800–950 cold cranking amps (CCA), though exact specifications vary by trim, engine, and original equipment manufacturer. This article explains the common battery sizes, how to confirm what your own car needs, and what to consider when replacing it.

Understanding the 2014 Audi A4 Battery Specification

The 2014 Audi A4, particularly in its North American and European configurations, is designed around a mid‑to‑large European‑style battery, optimized for modern electronics and, in many trims, start‑stop–ready charging systems. While most models share similar dimensions and ratings, owners should still check label details and documentation to ensure a proper match.

Typical OEM Battery Size and Type

From the factory, most 2014 Audi A4 models (including the common 2.0 TFSI variants) were equipped with a battery that corresponds to the H7/94R group size. This is a widely used European‑spec battery dimension that fits snugly in the A4’s rear battery compartment and meets the car’s electrical demands.

Below is a breakdown of the key characteristics that typically define the stock‑equivalent battery for a 2014 Audi A4.

• Group size: H7 (DIN size; BCI equivalent Group 94R)
• Voltage: 12 V
• Capacity (Ah): Commonly around 80–95 Ah, depending on supplier
• Cold Cranking Amps (CCA): Typically in the 800–950 CCA range
• Chemistry: Often AGM (Absorbent Glass Mat) in many trims; some lower‑spec or non‑start‑stop models may be flooded lead‑acid
• Terminal layout: Reversed terminals (positive on the right when terminals face you), consistent with Group 94R
• Mounting location: Trunk/rear compartment (varies slightly by market), with venting provisions

These specs represent what you would aim to match when replacing the battery, ensuring compatibility with the mounting tray, cable routing, and onboard energy management system.

Variations by Trim, Market, and Equipment

While H7/94R is the prevailing standard size, minor variations occur depending on engine, equipment level, and market (for example, North America versus Europe):

The following list outlines several factors that can influence the exact battery rating delivered from the factory.

• Engine type: Most 2014 Audi A4s are 2.0 TFSI turbocharged four‑cylinders, which generally use H7/94R, but capacity and CCA can vary slightly between suppliers (Varta, Exide, etc.).
• Start‑stop systems: Vehicles equipped with start‑stop or advanced energy recovery typically use AGM batteries and may be spec’d toward the higher end of the Ah and CCA range.
• Cold‑climate packages: Cars delivered to colder regions sometimes get higher‑CCA versions of the same physical size.
• Market differences: European‑delivered models may list their capacity mainly in Ah per EN standards, while North American aftermarket equivalents focus heavily on CCA and BCI group labels.
• Optional equipment load: Heavy options (navigation, premium audio, heated seats, etc.) don’t usually change the group size but can influence the exact Ah the factory chooses.

Despite these variations, the physical form factor remains consistent: an H7/94R‑sized battery is overwhelmingly the correct starting point for a 2014 Audi A4 replacement.

How to Confirm the Correct Battery for Your Specific A4

Because individual vehicles can differ slightly from broad market norms, the safest approach is to verify the exact specification on your car and in Audi documentation before buying a replacement.

Check the Battery Label in Your Car

The most straightforward way to confirm battery size is to read the label on the existing unit. On the 2014 A4, the battery is usually located in the trunk area under a cover or panel, rather than under the hood.

When you access the battery, look for this information on the label.

• Group or size code: “H7”, “94R” or a European code indicating the same footprint
• Capacity: Marked as “Ah”, commonly 80 Ah, 92 Ah, or similar
• CCA rating: Shown as CCA (SAE) or EN, for example “850 A (EN)” or comparable
• Chemistry: Labeled “AGM” or similar if it’s an absorbent glass mat battery
• Part number: Audi/VW part number or supplier number (Varta, Moll, Exide, etc.)

This information lets you match or closely approximate the original equipment, ensuring the new battery can handle the same electrical load and physical constraints.

Use Audi Documentation and VIN‑Based Lookups

Beyond the battery label, Audi’s official materials and VIN‑based tools can further confirm what your specific car requires.

The following resources are commonly available to Audi owners trying to verify correct battery specifications.

• Owner’s manual: Often lists recommended battery specifications or at least indicates capacity and type (e.g., “AGM only” for certain trims).
• Dealer or service department: A dealer can use your VIN to pull the exact part number and specification originally installed.
• OEM parts catalogs: Online Audi/VW parts catalogs (or ETKA data at the dealer) cross‑reference your VIN with compatible battery part numbers.
• Reputable aftermarket catalogs: Major battery manufacturers’ websites allow VIN or year/make/model lookup and typically return H7/94R AGM or equivalent for the 2014 A4.

Combining these sources reduces the risk of purchasing a unit that physically fits but fails to meet Audi’s electrical or software‑integration requirements.

Why Battery Type and Registration Matter

Modern Audis, including the 2014 A4, use intelligent charging and energy‑management systems. This makes it crucial to choose the right battery type and, in many cases, to “register” the new battery with the vehicle via diagnostic software.

AGM vs. Flooded Lead‑Acid

Many 2014 Audi A4 models—especially those with start‑stop or heavier electrical loads—are designed for AGM (Absorbent Glass Mat) batteries, which tolerate deeper cycling and high accessory use better than traditional flooded batteries.

Here are the main points to consider when choosing between AGM and conventional flooded batteries.

• Compatibility: If your car came with AGM, you should replace it with AGM. Downgrading to a flooded battery can shorten battery life and strain the charging system.
• Durability: AGM batteries better handle frequent starts, short trips, and numerous electronic systems drawing power.
• Cost: AGM units are more expensive than flooded equivalents, but typically last longer under the driving patterns that modern cars encounter.
• Charging profile: Audi’s voltage‑regulation strategy is calibrated around the expected battery chemistry; using the wrong type can lead to under‑ or over‑charging.

Matching the factory battery type preserves performance and reduces the risk of premature failure or system warnings.

Battery Registration and Coding

The A4’s energy‑management system monitors the battery’s condition and adjusts the charge rate to extend lifespan. When replacing the battery—especially if changing capacity, brand, or chemistry—Audi recommends “registering” the new battery using diagnostic software (such as the factory VAS tools or compatible aftermarket tools like VCDS or OBD11).

The following list explains why registration or coding is recommended.

• Resets adaptation values: Tells the car that a new battery has been installed so it doesn’t treat it as an aged unit.
• Optimizes charging: Charging curves are adjusted for the reported battery capacity and type.
• Reduces warning lights: Helps avoid spurious “battery” or “energy management” warnings.
• Extends longevity: Properly tuned charging improves long‑term battery health.

While some owners replace the battery without registration and encounter no immediate issues, following Audi’s procedure is considered best practice for maintaining system reliability.

Practical Tips for Replacing the Battery in a 2014 Audi A4

Once you know you need an H7/94R‑type replacement, a few practical considerations will make the swap more straightforward and safer.

Fitment and Installation Considerations

Because the 2014 A4’s battery is typically located in the trunk and secured in a tight compartment, precise fit and proper venting are important.

Key installation points to remember are listed below.

• Physical dimensions: Stick with an H7/94R footprint so the battery tray, hold‑down, and cover fit correctly.
• Terminal orientation: Ensure you have the “R” (reverse) layout—positive terminal on the correct side for the cable reach.
• Venting: Make sure any vent tube from the original battery is reconnected to the new one, especially in trunk‑mounted setups.
• Retain memory if needed: If concerned about losing radio presets or adaptation data, some technicians use a memory‑saver tool during swap; Audi’s systems generally recover, but check your preferences afterward.
• Secure mounting: Properly reinstall the hold‑down clamp so the battery cannot move under braking or during a collision.

Following these steps helps ensure the new battery not only powers the car reliably but also remains safe and compliant with the car’s design.

When to Replace and What Symptoms to Watch

By 2025, a factory‑original 2014 battery would be well beyond its typical service life, meaning most have already been replaced at least once. Still, understanding failure signs helps you time the next replacement correctly.

Common indicators that your 2014 A4’s battery may be due for replacement include the following.

• Slow cranking: Engine turns over sluggishly, especially on cold mornings.
• Intermittent warning lights: Battery or electrical system warnings, particularly on startup.
• Dimming lights or electronics issues: Headlights dimming at idle, infotainment reboots, or erratic behavior.
• Age: Battery older than 4–6 years is increasingly likely to fail, depending on climate and usage.
• Repeated jump‑starts: If you need a jump more than once or twice in a short period (and the alternator is healthy), the battery is usually near the end.

Addressing these symptoms early, with the correct H7/94R replacement, reduces the risk of being stranded and prevents unnecessary stress on the alternator and electronics.

Summary

Most 2014 Audi A4 models use an H7 (Group 94R) 12‑volt battery, typically in the 80–95 Ah range with around 800–950 CCA, often in AGM form—especially on trims with higher electrical loads or start‑stop systems. While this H7/94R size is the dominant standard, owners should confirm exact capacity and chemistry via the existing battery label, owner’s manual, VIN‑based parts lookup, or an Audi dealer.

Choosing the correct physical size, matching the original chemistry (usually AGM), and registering the new battery with the car’s energy‑management system helps ensure reliable starting, stable electrical performance, and long service life in the 2014 Audi A4.

Where is the battery on a 2014 Audi A4?

The battery on a 2014 Audi A4 is located in the trunk, underneath the spare tire. To access it, you will need to lift the trunk floor mat and remove the spare wheel and any covers or brackets.
 
This video shows the location of the battery in a 2014 Audi A4: 19sLive FreeYouTube · Jun 14, 2024

• Lift the trunk floor mat: Lift the carpet or mat in the trunk and secure it to the side or back using the provided handle. 
• Remove the spare wheel: Undo the center spindle nut, then carefully lift the spare tire out of the trunk. 
• Remove the cover: There will be a plastic cover and styrofoam/tool tray over the battery; remove these to gain access to the battery. 
• Remove the battery: Disconnect the negative terminal first, then the positive terminal, and finally the vent tube. Unbolt the hold-down bracket and lift the battery out. Be aware that the battery is heavy. 

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 does the Audi A4 use?

The Audi A4 battery size depends on the model year, but it commonly uses a Group Size 48 (H6) or Group Size 94R (H7) battery. For the most accurate fit, it’s best to check your specific model’s requirements or use an online battery fitment tool. 

• Group 48 (H6): A common size for many A4 models. 
• Group 94R (H7): Another frequent size, sometimes used in different trim levels. 
• Other sizes: Some older models or specific configurations might use other sizes like Group 49 (H8). 

To ensure you get the right battery:

• Check your current battery: Look for the size and group number printed on the battery itself. 
• Use an online fitment tool: Websites for auto parts retailers have tools that let you enter your vehicle’s year, make, and model to find compatible batteries. 
• Consult your owner’s manual: This will have the most precise specifications for your vehicle.

What kind of battery is in the 2014 Audi A4?

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