Audi Battery Repair Service
Audi 48V Lithium Battery Repair Service
Check Your OEM Part Number
Common OEM numbers for this repair service
- 4K0915105E
- 4M0915105C
- 4N0915105
- 4N0915105A
Don't see your OEM number? Send us a photo of your battery label or VIN — we'll confirm compatibility. Contact us
Professional mail-in repair for Audi 48V mild-hybrid (MHEV) lithium batteries used across A6, A6 Allroad, A7, A8, Q7, Q8 and S4 models. Send your OEM part number or VIN and we’ll confirm compatibility before shipping.
Repair service only — ship your original battery to us for diagnosis, repair, testing, and return.
- Nationwide USA mail-in repair
- 2–3 business day turnaround
- OEM diagnostics
- Tested before return
Questions before ordering?
Contact Us
Service check
Is this the right repair service?
This is an Audi 48V mild-hybrid battery repair service — not a full EV or PHEV traction battery repair. Confirm compatibility by OEM part number or VIN before shipping.
This service covers
- Audi 48V mild-hybrid (MHEV) lithium battery repair
- OEM 48V Li-ion MHEV modules from the 4K0, 4M0 and 4N0 families
- 48V drivetrain, start/stop, charging and communication faults
This service does not cover
- High-voltage EV traction battery packs
- PHEV high-voltage traction battery packs
- Conventional 12V lead-acid or AGM batteries
Service details
Compatibility
Audi 48V Compatible Models
This service covers Audi 48V mild-hybrid lithium battery modules. Confirm by OEM part number before shipping.
Compatible Models
- Audi A6 (C8) 2019-2025 48V mild hybrid battery systems
- Audi A6 Allroad 48V mild hybrid battery systems
- Audi A7 2019-2025 48V mild hybrid battery systems
- Audi A8 (D5) 2019-2025 lithium battery modules
- Audi Q7 2019-2025 48V mild hybrid battery modules
- Audi Q8 48V mild hybrid battery modules
Common symptoms & compatibility check
Your battery may be repairable if you are seeing issues like these.
- 48V mild-hybrid system faults
- Drivetrain or start/stop faults
- Charging and communication faults
- Voltage imbalance
- Battery warning messages
- OEM / VIN compatibility questions
Send us your OEM part number, VIN, or a photo of the battery label and we'll confirm compatibility before shipping.
Process
How Our Audi 48V Repair Works
Ship your original battery
Securely send your original Audi 48V mild-hybrid module to our repair center.
Diagnose, repair, and test
Full OEM diagnostics, module-level repair, and testing before it leaves us.
Return your original battery
Your repaired battery ships back to you nationwide.
Most repairs are completed within 2–3 business days after delivery.
Contact
Confirm Battery Compatibility
Send us your OEM part number, VIN, or battery label photo and we’ll confirm compatibility before shipping.
Support
Shipping, Repair Process & FAQ
How do I ship my battery?
Ship your original Audi 48V module to our repair center. Once received, it is inspected, repaired if eligible, and returned to you.
How long does the repair take?
Most repairs are completed within 2–3 business days after delivery.
How do I confirm my battery is compatible?
Confirm compatibility by OEM part number or VIN before shipping. Compare your part number against the supported OEM numbers shown in the hero above.
What if my battery cannot be repaired?
If a battery cannot be restored due to severe internal damage or corrosion, a refund is issued minus return shipping.
Are batteries tested after repair?
Yes. Each repaired module is tested before being returned to ensure proper functionality.
Does this cover the 12V starter battery?
No. This service covers the 48V mild-hybrid lithium module only, not the conventional 12V starter battery.
Next Steps
Need Something Else?
Sell a battery or read the full Audi lithium battery repair guide before ordering.
Sell Your Battery
Have a Li-ion battery you no longer need? Send us the OEM number and photos for an offer.
Get an OfferAudi Repair Guide
Read our Audi lithium battery repair guide, including symptoms, OEM numbers, and repair options.
Read Guide