Car key fob batteries for Audi

How to use the Audi key fob battery finder: Select your Audi model from the drop-down, optionally enter a single year or year range (for example, “2016” or “2017-2020”), and the tool will show the correct type of battery for Audi key fob, the generation (A-/Q-series code), quantity of cells, OEM battery part number and short replacement notes.

Audi key fob battery guide: sizes, types and replacement tips

If your remote suddenly stops locking or unlocking the car, chances are you simply need a new Audi battery for key fob. Most modern Audi models – A1, A3, A4, A5, A6, A7, A8, Q3, Q5, Q7 and Q8 – use a single 3V coin cell inside the remote. With the tool above you can quickly check exactly what battery does an Audi key fob take for your specific model, year and generation.

Our database is structured as:

• Brand: Audi
• Model: A1, A3, A4, A5, A6, A7, A8, Q3, Q5, Q7, Q8
• Years / Generation: for example, Audi A4 B8 (2008-2016), A4 B9 (2017-2023)
• Battery type: usually CR2032 3V coin cell
• Quantity: 1 battery per key fob
• Notes: key type (flip key / smart key / proximity), OEM micro-cell part number, basic replacement instructions

So instead of guessing in a shop, you can use the finder, pick your car, and instantly see the exact type of battery for Audi key fob you need.

What type of battery does an Audi key fob take?

For most recent models, the car key battery Audi uses is:

• Battery type: CR2032
• Voltage: 3V
• Quantity: 1 per key fob
• Typical OEM part number: N10528301 (genuine Audi/VW micro-cell battery for remotes)

That means in the majority of cases a standard CR2032 Audi battery for key fob is enough. However, different generations may look similar on the outside, but use slightly different housings and internal layouts. That is why we always connect the battery type to:

• the exact model,
• the production years,
• and the generation / body code (for example, A6 C7 vs A6 C8).

Use the tool at the top of the page to check your combination before ordering.

Batteries for Audi Q5 key fob (all generations)

One of the most frequent search queries is batteries for Audi Q5 key fob. Here is a quick overview:

• Audi Q5 1st gen (Typ 8R, approx. 2009-2017)
  • Battery type: CR2032
  • Quantity: 1
  • Typical key: flip key / remote key with integrated blade
  • Notes: the key fob splits along the seam; gently pry it open with a small flat tool, swap the battery, positive side up.
• Audi Q5 2nd gen (2018-2023, facelifted)
  • Battery type: CR2032
  • Quantity: 1
  • Typical key: smart key / proximity remote (no visible blade or a hidden emergency blade)
  • Notes: the cover slides or clips off on the rear side; replace the CR2032 and re-assemble. No re-programming is normally needed after a simple battery change.

To find the correct battery for Audi Q5 key fob for your model year, select Q5 in the tool, then filter by the year range of your car. The table will show the exact generation description plus battery type and OEM part number.

Model-by-model overview: car key battery Audi

Below is a brief summary for the most popular Audi models included in the tool. Each entry corresponds to a full row in the finder, with Brand, Model, Years / Generation, Battery type, Quantity, Notes.

Audi A1 key fob battery

• 2011-2018 (8XA / 8XK / 8X1)
  • Battery type: CR2032
  • Quantity: 1
  • Notes: compact flip key; open the plastic shell along the side groove, replace the battery with the + symbol facing up.
• 2019-2024 (GBA, new A1)
  • Battery type: CR2032
  • Quantity: 1
  • Notes: modern smart key style; the battery tray is usually behind the rear logo cover.

Audi A3 key fob battery

• 2008-2013 (8P / 8P1 / 8V1 / 8PA)
  • Battery type: CR2032, 1 pc.
• 2014-2020 (8V / 8VK / 8VA / 8VF / 8YA)
  • Battery type: CR2032, 1 pc.
• 2021-2024 (8Y, facelift)
  • Battery type: CR2032, 1 pc.

For all generations, the type of battery for Audi key fob in the A3 range is CR2032. The tool shows the exact generation and years so you can match it with your registration.

Audi A4 key fob battery

• A4 B8 (2008-2016)
  • Battery: CR2032 (1x)
• A4 B9 (2017-2023)
  • Battery: CR2032 (1x)

These remotes typically use an OEM micro-cell CR2032. The finder will display the OEM part number next to the battery type, so you can order either the original Audi battery or a high-quality third-party equivalent.

Audi A5, A6, A7, A8 key fob batteries

For the coupé and executive models, the logic is similar:

• Audi A5 B8/B9, Audi A6 C7/C8, Audi A7 C7/C8, Audi A8 D4/D5
  • Battery type: CR2032
  • Quantity: 1 per key fob

Smart keys for these cars may have a hidden emergency blade. Usually:

1. Slide out the emergency key.
2. Use the released slot to gently open the rear cover.
3. Replace the CR2032 coin cell.

Again, the easiest way to confirm exactly what battery does an Audi key fob take for your car is to choose the right model and year in the finder.

Audi Q3, Q5, Q7, Q8 key fob batteries

SUV owners often search for car key battery Audi Q3 / Q5 / Q7 / Q8. Across these models and generations in our tool you will typically see:

• Battery type: CR2032
• Quantity: 1
• Key types: flip key on older cars, smart / proximity key on newer ones.

The tool connects your model + year range to the corresponding generation (for example, Q7 Type 4L vs Q7 Type 4M) and shows a precise battery recommendation for that generation.

OEM part numbers and compatible replacements

Inside the tool, every Audi row includes an OEM battery part number. For the majority of CR2032-based remotes, this is:

• OEM: N10528301
• Description: genuine Audi/VW micro-cell battery, CR2032 3V coin cell for key fobs

You can use this OEM number to:

• order the original Audi battery for key fob from a dealer,
• or cross-reference it to premium third-party brands (Varta, Panasonic, Duracell etc.).

The finder also adds a direct shopping link based on the battery code (for example, “CR2032 battery”) so you can quickly find matching cells online.

FAQ: what battery does an Audi key fob take?

Q: What type of battery does an Audi key fob take in most cases?
A: For most modern Audi A- and Q-series cars, the type of battery for Audi key fob is a single CR2032 3V coin cell.

Q: How many batteries are inside an Audi key fob?
A: In almost all entries in our tool, Quantity = 1. The key fob is powered by one CR2032 coin cell.

Q: I’m not sure about my generation. How do I use the tool?
A: Select your model (for example, A4 or Q5), then enter the registration year (for example, 2017). The tool will automatically match your year to the correct Years / Generation range and show the battery type, OEM part number and notes.

Q: Can I use any CR2032, or do I need the Audi OEM battery?
A: You can use either the genuine Audi car key battery Audi (based on the OEM number) or a high-quality CR2032 from a reputable brand. The key thing is to keep the same size (CR2032), chemistry (lithium) and voltage (3V).

Use the finder at the top of this page, check your Audi model + year, and you will instantly know the exact type of battery for Audi key fob, how many cells you need, and the OEM part number for an original replacement.