The IQ Pro (V04305) is a contactor-capable Battery Management System (BMS) developed for medium-to-large packs that use external switching hardware. It supports 4S to 16S configurations and combines cell-voltage monitoring, temperature measurement, and 180 mA passive balancing in a compact controller. Up to five NTC inputs monitor cell temperatures, while two additional channels provide external temperature sensing. Redundant voltage and thermal protections operate alongside a heater drive with 5 A current sensing.
High-current power-path control is handled through drives for up to five external contactors, with contact sensing used to confirm switching status. The safety architecture adds redundant charge, discharge, and short-circuit protection together with a redundant Safety Disable Loop. Pack-current measurement is provided through HE (2) current sensing, while microprocessor-based algorithms estimate state of charge and state of health. Isolated CAN, BLE, Wi-Fi, programmable GPIO, on/off control, and LED display support provide several options for system integration and user feedback.
Specifications:
| Dimensions: | 80 mm (L) × 55 mm (W) × 12 mm (H) |
| Cell Voltage Sensing: | 4S to 16S |
| Cell Temperature Inputs: | Up to 5 NTC inputs |
| External Temperature Sensing: | 2 inputs |
| Cell Balancing: | 180 mA passive balancing |
| Safety Protections: | Redundant OVP Redundant UVP Redundant OTP Redundant UTP |
| Heater Control: | Heater drive with 5 A current sensing |
| System Control Inputs: | On/off control input/output |
| Energy and Health Algorithms: | Microprocessor-based SOC and SOH estimation |
| Primary Protection Switching: | Drives for 5 contactors Contact sensing |
| Secondary Protection: | Redundant OCC Redundant OCD Redundant SC |
| Safety Disable: | Redundant Safety Disable Loop (SDL) |
| Current Measurement: | HE (2) current sensing |
| Communications: | 1 isolated CAN port (1000 V) |
| Wireless Connectivity: | BLE Wi-Fi for internet connectivity |
| User Feedback: | 5-segment LED display output |
| Programmable I/O: | 4 programmable GPIO |
