Full Kit: REC BMS for SMA Sunny Island

All you need KIT

incl: electronics unit, shunt, wiring harness, temp sensor, touchscreen display

In Stock

Calculate Shipping

incl: electronics unit, shunt, wiring harness, temp sensor, touchscreen display

Comprises all the parts you need for use with an SMA Sunny Island Inverter


  • robust and small design
  • 5 – 16 cells
  • single cell voltage measurement (0.1 – 5.0 V, resolution 1 mV)
  • single cell - under/over voltage protection
  • single cell internal resistance measurement
  • SOC and SOH calculation
  • over/under temperature protection (up to 4 temperature sensors)
  • passive cell balancing 4.3 Ω
  • 18-bit shunt current measurement (resolution 7.8 mA @ ± 200 A)
  • galvanically isolated user defined multi-purpose digital output
  • programmable relay (normally open)
  • galvanically isolated RS-485  communication protocol
  • CAN Bus communication
  • error LED + buzzer indicator
  • hibernate switch
  • 1 s measuring interval
  • balancing transistors defect check @ restart
  • EEPROM memory data corruption check @ restart
  • cell's voltage RMS voltage measurement
  • self calibration @ restart
  • BMS shutdown @ 0.98 x minimum cell disconnect threshold
  • Ah counting

Data communications

RS485 protocol and messages are fully defined in manual - can be programmed using Hyperterminal or similar

RS485 message checksum is CRC-16   0x8005   x16 +x15 +x2 + 1, refer to https://www.lammertbies.nl/comm/info/crc-calculation.html  (Labview VI also available)

CAN Bus messages are fully defined in manual

PC Master Control Software

Available as an option

Future enhancements

Bluetooth dongle with Apple/Android app near completion (July 2017)

Integration with Victron Color Control GX (waiting for firmware release as at July 2017)




Product Function and Performance

Product Weight and Dimensions

Shipping Weight and Dimensions

We Also Recommend

Others Also Bought

More From This Category