2024 Xiaomi SU7 OEM Salvaged Battery-to-PTC/EAC High-Voltage Harness - 800V Platform with Thermal Management & IP67 Waterproofing

Restore or upgrade your Xiaomi SU7’s critical thermal and charging systems with this factory-original salvaged high-voltage harness, engineered for seamless connectivity between the battery, PTC heater, and EAC (Electric Air Conditioning) compressor. Recovered from decommissioned SU7 Max/Ultra prototypes, this harness replicates the OEM 800V silicon carbide platform design, featuring reinforced insulation, thermal stability, and precision-welded connectors for reliable operation in extreme conditions.

Core Features & Benefits

1. High-Voltage Compatibility

   • 800V Platform Support: Optimized for Xiaomi’s SU7 Max/Ultra models, enabling 510 km range extension in 15 minutes (120 kW DC fast charging) 

   • Dual-Layer Shielding: Reduces electromagnetic interference (EMI) and ensures stable communication between the battery management system (BMS) and PTC/EAC components.

2. Robust Thermal Management

   • Heat-Resistant Insulation: 17-layer insulation protection and aerogel materials to withstand temperatures from -40°C to +125°C 

   • Cooling Channels: Integrated heat dissipation pathways reduce connector temperatures by 15–20°C under peak loads.

3. Waterproof & Dustproof Design

   • IP67 Rating: Sealed connectors and silicone gaskets prevent water ingress during heavy rain or submersion (tested to 1m depth for 30 minutes) 

   • Corrosion Resistance: Stainless steel terminals and fluoropolymer insulation for longevity in humid or salty environments.

4. Plug-and-Play Installation

   • Pre-Calibrated Routing: Maintains SU7’s factory wiring paths and gap tolerances (±1.0 mm) for PTC/EAC integration.

   • CAN Bus Compatibility: Direct replacement for SU7’s high-voltage control module with verified protocol compatibility