What Size Battery Is in the 2013 Audi A5?
The 2013 Audi A5 typically uses a Group 48 (also known as H6) 12‑volt battery, with a capacity around 70–80 Ah and cold cranking amps (CCA) generally in the 680–800 range, depending on brand and equipment like start/stop. However, exact specifications can vary slightly by engine, trim, and market, so owners should confirm via the vehicle’s existing battery label or the owner’s manual.
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Understanding the 2013 Audi A5 Battery Specification
The question of “what size battery” for a 2013 Audi A5 really breaks down into a few technical dimensions: physical size (battery group), electrical capacity (amp‑hours and CCA), and technology type (flooded lead‑acid vs. AGM). Audi designed the A5’s electrical system for a specific range of batteries, and staying within those parameters is key for reliability and to avoid issues with the car’s electronics.
Standard Battery Group and Physical Dimensions
For most 2013 Audi A5 models sold in North America and Europe, the standard replacement specification is a Group 48/H6 battery. This group number defines the battery’s footprint and terminal layout, which must match the car’s battery tray and cable locations.
The list below outlines the typical physical specifications for the 2013 Audi A5’s battery group size.
- Battery group: Group 48 (H6, sometimes labeled L3 in Europe)
- Approximate dimensions:
- Length: about 306–315 mm (12.0–12.4 inches)
- Width: about 173–175 mm (6.8–6.9 inches)
- Height: about 190–192 mm (7.5–7.6 inches)
- Terminal layout: Standard European layout, positive terminal typically on the right when terminals are closest to you
- Voltage: 12 V nominal
These physical characteristics ensure the battery sits securely in the tray, fits under the cover, and allows the cables to connect without strain—critical for safe installation and long-term reliability.
Capacity, CCA, and Battery Technology
Beyond size, the most important details for the 2013 Audi A5 battery are capacity (how much energy it stores), CCA (starting power in cold conditions), and whether the battery is conventional flooded lead‑acid or AGM (Absorbent Glass Mat). Many A5s, especially those with start/stop or higher electrical loads, came with AGM batteries from the factory.
The following list describes typical electrical specifications found on suitable replacement batteries for the 2013 Audi A5.
- Capacity (Ah): Generally 70–80 Ah
- Common spec: around 72 Ah or 75 Ah for many OEM‑equivalent batteries
- Higher‑end units may reach 80 Ah, which is acceptable if within manufacturer guidelines
- Cold Cranking Amps (CCA): Typically 680–800 CCA
- Standard petrol (gasoline) A5: often around 680–730 CCA
- Diesel and start/stop models: often toward the higher range, 760–800+ CCA
- Battery type:
- AGM (Absorbent Glass Mat): Common on models with start/stop, heavy electronics, or comfort packages
- Flooded lead‑acid: May be found on simpler trims without start/stop
- Reserve capacity: Often in the 120–140 minute range (varies by brand)
Staying within these ranges—especially matching AGM if your car originally had AGM—helps maintain proper performance, avoids electrical anomalies, and ensures the alternator and charge management system operate within design limits.
Differences by Engine, Trim, and Market
While the Group 48/H6 form factor is the dominant standard for the 2013 Audi A5, small variations can occur based on engine type, options, and country. The question “what size battery” may therefore have slightly different answers for a U.S. gasoline coupé versus a European diesel Sportback with start/stop.
Gasoline vs. Diesel Models
Gasoline and diesel engines place different demands on the starter and electrical system, particularly in cold climates. That’s why you may see higher CCA values and sometimes different capacity specs on diesel models.
The following list provides a general guide to how engine type can influence recommended battery specs for the 2013 A5.
- Gasoline (e.g., 2.0 TFSI):
- Group 48/H6 size
- Capacity typically around 70–75 Ah
- CCA commonly in the 680–730 range
- AGM often used if vehicle has many electrical options or start/stop, but some markets may have flooded lead‑acid
- Diesel (e.g., 2.0 TDI, 3.0 TDI – mostly outside North America):
- Same basic Group 48/H6 footprint
- Often higher capacity (up to ~80 Ah)
- Higher CCA ratings, frequently 760–800+ for reliable cold starts
- AGM more common due to higher loads and start/stop prevalence in Europe
These differences don’t generally change the physical size of the battery, but they do affect which specific model within the Group 48 range is ideal for your particular A5.
Start/Stop and High-Electrical-Load Versions
Some 2013 Audi A5 models feature automatic start/stop systems and a heavier suite of electronics, including advanced infotainment, power options, and driver-assistance systems. These vehicles are more demanding on the battery and charging system.
The list below highlights how extra equipment can influence the ideal battery choice.
- Start/stop equipped vehicles:
- Usually require an AGM battery
- Capacity often on the higher side (around 75–80 Ah)
- High CCA ratings to handle frequent restarts
- High-electrical-load trims (e.g., with upgraded sound, navigation, heated seats, lighting packages):
- AGM strongly recommended even if not originally fitted, provided it matches Audi specs
- Look for robust reserve capacity to support accessories with engine off
- Base or lightly optioned trims:
- May function adequately with a quality flooded lead-acid battery
- Still should match the OEM Ah and CCA ratings as closely as possible
Matching or exceeding the original equipment specification—while staying within Audi’s recommended range—helps prevent premature battery wear and avoids odd electrical symptoms when multiple systems draw power at once.
How to Confirm the Correct Battery for Your Specific A5
Because minor variations exist across trims, markets, and previous owner replacements, the most reliable way to identify the “right” battery for your specific 2013 Audi A5 is to check a few sources directly on your car and in Audi’s documentation.
Checking the Existing Battery Label
If the current battery appears original, or at least correctly specified, its label is the quickest reference point. However, older batteries may be replacements that don’t match Audi’s recommendations. Still, they provide valuable clues.
The following list shows what to look for on your existing battery label.
- Group/size mark: Look for “48,” “H6,” or “L3” somewhere on the label
- Capacity (Ah): Usually printed as “70 Ah,” “72 Ah,” “75 Ah,” or similar
- CCA rating: Marked as “CCA” or “EN,” often in the 680–800 range
- Type designation:
- “AGM” will be clearly indicated for Absorbent Glass Mat batteries
- Standard flooded may simply read “Pb” or just list specs without “AGM” or “EFB”
- Brand OE codes: Some OEM batteries have VAG (Volkswagen Audi Group) part numbers printed, useful if cross-referenced with a dealer or parts catalog
By comparing this information with Audi’s official specifications and reputable fitment guides, you can confirm whether the battery currently installed is the correct size and type.
Consulting the Owner’s Manual and VIN-Based Parts Lookup
The 2013 A5 owner’s manual typically provides general battery guidance, while Audi’s electronic parts catalogs and dealer systems can match part numbers to your exact VIN. This is especially helpful if the car’s battery may have been incorrectly replaced in the past.
The list below explains key steps for verifying the correct battery through documentation and official sources.
- Owner’s manual:
- Check the “Battery” or “Vehicle care” section
- Look for references to capacity (Ah) and technology (AGM vs. standard)
- Dealer or authorized Audi service center:
- Provide your VIN to obtain the exact OEM battery part number
- Ask for the specified Ah and CCA ratings that correspond to that part number
- Online VIN-based parts catalogs:
- Some third-party parts sites use your VIN to list compatible Group 48/H6 batteries
- Cross-check these listings with the physical space and specs you see in the car
Combining these sources provides a high-confidence answer tailored to your specific 2013 Audi A5, beyond the general Group 48/H6 guidance.
Important Considerations When Replacing the Battery
On modern Audis like the 2013 A5, replacing a battery is not as simple as swapping in a new one of roughly the same size. The vehicle’s battery management system (BMS) tracks the battery’s condition and charging behavior, and some models require battery “registration” or coding when a new unit is installed.
Coding and Registration
Many Audi models from this era use an energy management system that adjusts charging based on the battery’s age and state. When you install a new battery, that system may need to be reset or updated with the new battery’s details to ensure proper charging and avoid error messages.
The following list highlights key points about coding and registration for a 2013 Audi A5 battery change.
- Battery Energy Management (BEM):
- Some A5 configurations require a new battery to be “coded” using a diagnostic tool (e.g., VCDS, dealer tool, or sophisticated aftermarket scanner)
- The system may store information such as battery capacity, type, and manufacturer code
- Why coding matters:
- Ensures the alternator charges at the correct voltages and currents
- Prevents overcharging a new battery or undercharging an AGM unit
- Consequences of skipping coding:
- Reduced battery life
- Potential warning lights or “battery discharge” messages
- Unpredictable behavior of start/stop or comfort systems
While some owners replace batteries without coding and experience no immediate issues, Audi’s intended procedure includes registering the new battery data whenever the battery is changed.
Choosing Between OEM and Aftermarket
Owners often weigh the cost of an OEM battery from an Audi dealer against aftermarket equivalents from reputable brands. As long as the size, capacity, CCA, and type match Audi’s requirements, quality aftermarket options can be entirely acceptable.
The following list outlines considerations when selecting a specific battery for your 2013 Audi A5.
- Stick to Group 48/H6: Ensures proper fit and cable reach
- Match or slightly exceed Ah and CCA:
- Do not go below Audi’s original Ah/CCA ratings
- Slightly higher values are generally safe if within the same group and type
- Match technology (AGM vs. flooded):
- If your A5 came with AGM, replace with AGM
- Swapping to standard flooded from an original AGM setup is not recommended
- Warranty and brand reputation:
- Look for multi-year free replacement warranties
- Choose established brands with proven European-vehicle compatibility
Balancing cost, warranty, and technical compatibility allows A5 owners to secure a reliable replacement battery without sacrificing safety or performance.
Summary
The 2013 Audi A5 is designed to use a 12‑volt battery in the Group 48/H6 (L3) size category, with a typical capacity around 70–80 Ah and CCA ratings in the 680–800 range. Many models—especially those with start/stop or higher electrical loads—are equipped with AGM batteries from the factory. While this general specification applies widely across the 2013 A5 range, exact values can vary by engine, trim, and market, making it essential to confirm details via the existing battery label, the owner’s manual, or a VIN-based Audi parts lookup. When replacing the battery, matching the original type and performance, and performing any required coding or registration, is crucial for maintaining the car’s electrical reliability and long-term battery life.
What kind of battery does a 2013 Audi A5 take?
Duralast Group Size 48 H6 Battery H6-DL.
How much is a battery for an Audi A5?
The best part is, our Audi A5 Batteries start from as little as $89.99. When it comes to your Audi A5, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Batteries brands so you can shop with complete confidence.
What size battery is in the 2012 Audi A5?
Duralast Gold Group Size 94R H7 Battery H7-DLG.
What type of battery does an Audi A5 have?
A 12V lead-acid battery is the most common type used in Audi A5 vehicles to start the engine and power electrical systems.
