Master BMS

Advanced Master Battery Management System for high-voltage battery packs, EV projects, VESC-based systems, and energy storage applications.

Main Features

• Supports battery systems up to 200V
• Works with up to 8 Slave BMS boards
• Master-slave design for scalable battery packs
• Designed for high-voltage EV and energy storage systems
• Real-time battery monitoring and protection
• Plug-and-play setup with VESC Tool
• Compatible with VESC mobile and desktop
• OTA firmware update support
• Built-in Bluetooth and WiFi
• Dual CAN bus communication
• Automatic wake-up function
• Low-power operation modes
• Advanced fault detection and system protection

Communication

• MCU: ESP32-C6
• Dedicated CAN bus for Slave BMS communication
• Dedicated isolated CAN bus for ESC/VESC communication
• Stable communication between battery system and motor controller

VESC Integration

• Designed for the VESC ecosystem
• Supports real-time battery data in VESC Tool
• Beeps
• Pushback
• Auto-shutdown
• Live battery monitoring

Wireless Features

• Bluetooth connectivity
• WiFi connectivity
• OTA firmware updates
• Wireless diagnostics
• Wireless configuration

Battery Compatibility

• Li-Ion
• Li-Polymer
• LiFePO₄

Monitored Data

• State of Charge, SoC
• Individual cell voltages
• Total pack voltage
• Charging current
• Temperature
• Amp-hours, Ah
• Watt-hours, Wh

Technical Specifications

• Maximum system voltage: 200V
• Slave BMS support: Up to 8 boards
• MCU: ESP32-C6
• Communication: Dual CAN bus
• Charging current: Up to 20A with cooling
• Connectivity: Bluetooth, WiFi, OTA
• Configuration: VESC Tool
• Battery types: Li-Ion, Li-Polymer, LiFePO₄