Lithium-Ion Vehicle Battery Repair Service
At Autobunkerz European & EV Specialists, we provide advanced diagnostic and repair services for lithium-ion vehicle batteries used in systems such as:

• Porsche Cayenne

• Bentley models

• Audi SQ7 / Q8 / RSQ8 / SQ8

These modern battery systems are controlled by an advanced Battery Management System (BMS). When the system detects issues such as deep discharge, accident impact, overcharge protection, or voltage instability, it may enter a protective lock or shutdown state.

 

Our Repair Process

1. Diagnostic Evaluation

We perform full battery diagnostics to identify the root cause of BMS protection mode, cell imbalance, or communication faults.

2. Controlled Safety Discharge

The battery is safely stabilised and discharged under controlled conditions to ensure safe access for internal assessment.

3. BMS Analysis & Reset

We inspect the Battery Management System and perform recalibration or reset procedures where the system is recoverable.

4. Cell-Level Charging & Balancing

Individual lithium cell groups are tested, balanced, and recharged to restore correct voltage distribution and performance stability.

5. Component Repair & Replacement

Where required, damaged BMS components or supporting electronics are replaced using quality-tested parts.

6. Controlled Digital Charging

After repair, the battery undergoes regulated digital charging cycles to restore full capacity and system adaptation.

7. Final Testing & Validation

We complete full load testing, BMS verification, and system stability checks to ensure safe and reliable operation.