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The s-BMS consists of a BMCU (Battery Management Control Unit) master board. The master board communicates with up to 32 Local Monitoring Units (LMU), featuring up to 1000V applications.

The LMU monitors individual and total voltages of 3-8 cells in series and features 2 temperature sensors.

The s-BMS can be configured through the licensed s-BMS PRO software, which enables the battery integrator to create a unique battery design and tailor it specifically for their needs.


See all specifications
Power supply 6-35 V
Range of high voltage measurement 0 – 120 VDC
Accuracy of high voltage measurement ±1 VDC
Range of current measurement input Shunt ±200 mV
Accuracy of current measurement input Shunt ±0.5 mV -40 – 85 °C
Range of current measurement input (Hall effect sensor) 0.0 – 5.0 V, 0.0 -2.5 V current in, 2.5 V – 5.0 V current out
Accuracy of current measurement input (Hall effect sensor) ±1.25 mV -40 – 85 °C
Standby consumption (sleep mode) <2.5 mW
Active consumption <2.7 W
Supported CAN communication type CAN 2.0A/B 11 bit and 29 bit IDs
Supported CAN speeds 125, 250, 500, 1k kbit/sec
CAN ports 1 (reference to power supply 6-35V)
External General Purpose I/O’s 4 GP I/O (Active Low) and 4 inputs
Charger control interfaces CAN
Number of cells Up to 24 Cells. Minimum 11 V
Minimum detectable cell voltage 0 VDC
Maximum detectable cell voltage 5 VDC
Cell balancing topology Dissipative
Cell balancing current 200 mA, at cell voltage 4.2 V
Cell voltage typical sampling time 100 ms
Accuracy of single cell voltage ±1.6 mV at 25 °C
Range of Temperature measurements -40 to +85 °C
Accuracy of cell temperature (NTC) ±1 °C -40 – 85 °C
Patents Granted ZT 200780048774, EP 0781788.6, US 8.350.529
Temperature sensor channels Up to 6
Dimension 170 mm x 70 mm x 15 mm, 67 g

Related Products

Application software
  • Configuration software
    • The s-BMS PRO software enables the battery designer to set up the BMS configuration for their specific application and selected battery chemistry.
  • Service software
    • The s-BMS SERVICE software enables the after-sales service for the battery in a safe way, by providing a read-only access to users. Options for making changes in the configuration are disabled.
  • USB/RS232
    • For both the s-BMS SERVICE and the s-BMS PRO software, an adapter is required for connecting from the BMS to the PC. The USB/RS232 adapter is optimized for s-BMS PRO/SERVICE.

Read the PRO Software product presentation

Wire harness
  • Cell monitoring wire harness
    • We can provide tailor-made cell monitoring and temperature wire harnesses for all s-BMS products.
  • Internal communication wire
    • For all s-BMS products a range of standard length interconnecting cables and wires can be provided. The connection cables are based on RS485 protocol.
  • External communication wire
    • For all s-BMS products a range of different I/O cables are provided for connection to shunt, VCU, relays, CAN devises and other peripherals.
Current measurement
  • Shunts
    • For all s-BMS products, a range of standard, compact, and high precision shunts are offered. The shunts can be selected to fit almost any application specific currents.
Other accessories
  • Fuses
    • For battery systems, a further safety layer is configured, using fuses. LiTHIUM BALANCE offers several fuses with ratings relevant for large format batteries.
  • Relays
    • For all s-BMS products a range of standard, robust relays are offered. The relays can be selected to fit almost any application specific currents and voltage levels.
  • Application support
    • In order to ensure the smooth integration of the s-BMS into the system, we offer application support. In the software license 5 hours of free support is included. Application support beyond that is offered on an hourly basis.
  • Training
    • For a comprehensive introduction about the possibilities of our s-BMS, Li-ion technology, and battery integration, LiTHIUM BALANCE offers training tailored specifically to your needs.
  • Remote surveillance
    • For our s-BMS, a modem-based surveillance system can be connected to the BMS via CAN. The data is stored on a secure server and can be accessed from anywhere.

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