Launch X431 EV Expansion Kit – Advanced Diagnostic Module for Electric & Hybrid Vehicles
Professional High-Voltage Diagnostic Solution | Compatible with X431 PRO & PAD Series | BMS, Battery, Isolation & Inverter Testing
The Launch X431 EV Expansion Kit is a professional-grade diagnostic and safety testing module designed exclusively for electric (EV) and hybrid (HEV) vehicles.
Developed for integration with the Launch X-431 PRO and PAD series, it enables in-depth diagnostics of high-voltage systems, battery management systems (BMS), electric drivetrains, and energy control modules, ensuring total confidence when servicing the latest generation of electric mobility platforms.
From battery cell analysis and isolation resistance testing to inverter performance checks and BMS communication, the Launch EV Kit transforms your X-431 diagnostic tablet into a complete EV testing station—safe, accurate, and compliant with modern automotive standards.
🧰 What’s Included in the Kit
| Component | Description |
|---|---|
| EV Diagnostic Module | The main high-voltage diagnostic interface for EV/HEV systems |
| High-Voltage Adapters | Safely connect to various EV circuits for insulation and relay tests |
| Battery Cell Test Leads | Measure individual cell voltage, current, and temperature |
| Multimeters & Test Cables | Professional-grade probes for voltage, current, and insulation testing |
| Safety & User Documentation | Includes EV safety guidelines, procedures, and protective protocols |
Each tool and adapter in the set is designed to meet ISO 6469 and IEC 61851 safety standards for high-voltage electric systems.
🔋 Core Diagnostic Functions
1️⃣ Battery Diagnostics
Individual cell voltage and temperature measurement
State-of-health (SOH) and state-of-charge (SOC) evaluation
Insulation resistance tests up to 1000V
Monitoring of charge/discharge cycles and battery performance history
Analysis of internal resistance and balance between cells
2️⃣ Battery Management System (BMS) Diagnostics
Full read/clear of BMS fault codes (DTCs)
Real-time data monitoring and graphing of voltage, current, and temperature
Communication analysis between BMS and other control units (inverter, charger, etc.)
Verification of CAN communication and voltage thresholds
3️⃣ High-Voltage System Testing
Relay performance test for HV contactors
Isolation testing of HV circuits and components (up to 1000V)
Detection of short circuits, leakages, or contamination in high-voltage paths
Verification of charging system integrity (DC fast charge, onboard AC charger)
4️⃣ Power Management & Inverter Testing
Diagnostic access to DC-DC converters and inverters
Check current sensors, MOSFETs, and motor drivers
Evaluate efficiency of energy conversion between high-voltage and low-voltage domains
Motor/inverter temperature, voltage, and current analysis
Performance testing under simulated load conditions
🌐 Supported Diagnostic Operations
| Function | Description |
|---|---|
| Battery Pack Test | Measures HV voltage, insulation, and balance across cells |
| Charging System Test | Diagnoses charging port, controller, and communication |
| Inverter & Motor Test | Checks conversion efficiency and control signal integrity |
| HV Relay Check | Verifies proper contact and switching function |
| Isolation Resistance | Detects leakage or poor insulation in HV circuits |
| BMS Analysis | Reads communication data, temperature, and safety states |
🧩 Compatibility with Launch Devices
| Launch Device | Compatibility |
|---|---|
| X431 PRO3 APEX | ✅ Full compatibility |
| X431 PRO ELITE | ✅ Full compatibility |
| X431 PAD V | ✅ Recommended for EV diagnostics |
| X431 PAD VII | ✅ Optimal performance & full functionality |
| X431 PRO5 | ✅ Requires latest firmware update |
⚠️ Not compatible with CRP or older X431 devices without EV software support.
⚡ Supported Electric & Hybrid Vehicles
The Launch X431 EV Kit provides comprehensive coverage for major EV and HEV brands, including:
Tesla – Model S, 3, X, Y
Nissan – Leaf, Ariya
Toyota / Lexus – Prius, RAV4 Hybrid, UX300e
Hyundai – Ioniq, Kona EV, Nexo
Kia – EV6, Niro, Soul EV
BMW – i3, i4, i8
Volkswagen – ID.3, ID.4, ID. Buzz
Audi – e-Tron, Q4 e-Tron
Renault – Zoe, Megane E-Tech
Mercedes-Benz – EQ Series (EQA, EQB, EQC, EQE, EQS)
Additional brands added regularly via OTA software updates.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Range | 0–1000 V DC |
| Insulation Test Range | Up to 1000 MΩ |
| Measurement Accuracy | ±0.5% |
| Operating Temperature | –10 °C to +50 °C |
| Interface | USB / OBD / EV Adapter Ports |
| Supported Communication | CAN / LIN / UDS / ISO 14229 |
| Display (via host device) | Launch X431 tablet interface |
| Software Updates | 2 years free OTA (over Wi-Fi) |
💡 Why Choose Launch X431 EV Expansion Kit
✅ Future-proof your workshop – handle electric & hybrid vehicles with confidence
✅ Integrates seamlessly with existing Launch X431 diagnostic systems
✅ Full high-voltage safety compliance (IEC/ISO certified)
✅ Professional-grade accuracy for BMS and battery testing
✅ Covers 98% of EV & HEV models globally
✅ Guided step-by-step testing for isolation and voltage safety
✅ Built for real-world workshop conditions
✅ Includes complete safety & operating documentation
📦 Package Contents
| Item | Description |
|---|---|
| 1 × EV Diagnostic Module | Core interface for EV/HEV diagnostics |
| 1 × High-Voltage Adapter Set | Connects safely to HV circuits |
| 1 × Battery Test Cable Kit | Measures cell-level parameters |
| 1 × Professional Multimeter Set | Voltage, current, insulation measurement tools |
| 1 × Safety Documentation Pack | Manuals and high-voltage safety procedures |
| 1 × Storage Case | Heavy-duty protective case for mobile use |
🧠 Real Workshop Applications
🔹 Battery Pack Replacement: Evaluate new or used packs before installation.
🔹 High-Voltage Leak Detection: Detect insulation faults in hybrid systems.
🔹 Inverter Testing: Check current flow, signal synchronization, and MOSFET response.
🔹 DC-DC Converter Evaluation: Ensure stable 12V conversion from HV circuits.
🔹 Charging Fault Analysis: Diagnose AC/DC charging controller issues.
🔹 Thermal Management: Monitor temperature sensors and cooling pumps.
