The IQ Pro (V04305) is a contactor-capable Battery Management System (BMS) developed for medium-to-large packs that rely on external switching hardware. Supporting 4S to 16S configurations, the controller brings together cell-voltage monitoring, temperature measurement, pack-current sensing, and 180 mA passive balancing. Five NTC inputs handle cell-temperature monitoring, while two additional channels measure external temperatures. Redundant voltage and thermal protections are paired with a heater drive that includes 5 A current sensing.
Control of high-current power paths is provided through drives for up to five external contactors, with contact sensing used to verify switching status. The protection architecture incorporates redundant charge, discharge, and short-circuit safeguards alongside a redundant Safety Disable Loop. Microprocessor-based algorithms estimate state of charge and state of health, while HE (2) sensing provides pack-current measurement. An isolated CAN port supports wired communications, while BLE and Wi-Fi provide wireless connectivity. Four programmable GPIO, on/off control, and five-segment LED display output provide additional integration and feedback interfaces.
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 |
