REC BMS Q16S configured as SLAVE unit for 9M MASTER BMS unit (special order for systems greater than 16 cells in series)

Up to 240 cells in series
RRP $849.00
Sold Out - Backorder Available

Unit is programmed as a slave unit for the 9M Master BMS unit.


  • 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

CAN Bus messages are fully defined in manual

PC Master Control Software

Available as an option




1 Year

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