• robust and small design
  • 4 – 16 cells (for 12V, 24V, 36V or 48V nominal battery packs or any number of cells between 4 and up to 16 cells (68V))
  • 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 Ω
  • 18-bit shunt current measurement (resolution 19.5 mA @ ± 500 A)
  • galvanically isolated user defined multi-purpose digital output
  • internal DC opto-relay output
  • programmable relay (normally open)
  • galvanically isolated RS-485  communication protocol
  • CAN Bus communication for managed batteries
  • Galvanically isolated serial port communication for
    - REC Wi-Fi unit for changing the settings and data-logging (optional accessory) or
    - Users may connect the BMS into their system, eg home automation, industrial applications, remote monitoring, etc
  • error LED + buzzer indicator
  • Remote ON/OFF
  • Control pilot (CP) signal for Electric Vehicle Supply Equipment (EVSE)
  • Integrated 25 Ohm pre-charge with adjustable time delay
  • Integrated Real-time clock (RTC) with last 7 errors
  • Watt-hour (Wh) counter
  • ISO16315, ISO10133, EN61558-1, EN61558-2 and EN50498 compliant

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

Included items:

1. 2Q BMS electronic unit

Optional Items

REC Wifi


1 Year