Blog - BMS Systems

Simple protection module for single cells - 3.6V/20A

Simple protection module for single cells - 3.6V/20A

The new SBM01/20 is designed for protection of a single cell against overcharge, overdischarge and overcurrent. SBM01 is an easy and suitable as simple protection of a single LiFePo4 cell, including small cells.

SBM wiring diagram with charger and controller

SBM wiring diagram with charger and controller

Please note that the main switch must be turn off, when the equipment will not be used. Otherwise the DC coil of the DC-contactor will always drain the battery.

The auxiliary resistor(at the DC contactor) is needed only in case the

FAQ: Can the pack of 400AH cells be balanced effectively by...

FAQ: Can the pack of 400AH cells be balanced effectively by the SBM16/60 board?

Answer:No. The balancing current of the SBM boards is very low. The balancing current for SBM16/60 is only 72mAh (0.072A). It would take many day or weeks to balance a large capacity cell. (For example to balance a 5Ah difference with 0.072A current would take some

FAQ: How does the balancing of the BMS or SBM work?

FAQ: How does the balancing of the BMS or SBM work?

The balancing is done only when charging. During the charging, as soon as the voltage of any of the cells goes over the balancing voltage level, the balancing starts. The balancing is in fact working as “by-passing” (or shunting

FAQ: Question about testing the SBM and CBM boards

FAQ: Question about testing the SBM and CBM boards

Question: I tried to verify the function of SBM module and the CBM boards using a laboratory power supply. It seems that the SBM does not work properly. What to do?

Answer: The SBM and CBM boards are designed to work with a real battery as a

FAQ: The BMS123 – showing the “L” indicator 

FAQ: The BMS123 – showing the “L” indicator

In ordinary operation the “L” indicator on the BMS123 software control screen serves to indicate the low voltage status of the battery or low temperature of the battery. This means that the BMS123 software wil

BMS123 - on-line data logger 

BMS123 - on-line data logger

TheBMS123 Data Logger (over USB) allows to read, display and record the data from the USB output of the BMS123. This way you can monitor your BMS123 system without the need to use the full size computer.

The recorded data is st

An example of the installation of BMS123 cell modules

An example of the installation of BMS123 cell modules

Proper wiring is the basis for a simple a stable installation. The advantage of the BMS123 cell modules is the single wire inter-connection.

Check details for BMS123 here

Details on the BMS123 communication protocol

Details on the BMS123 communication protocol

Learn about the data you can retrieve from the BMS123 over the serial/USB protocol.

Check the

The data include:

• time
• charge level
• voltage
• current
• minimum cell voltage [V]
• minimum cell v

Another SBM installation diagram

Another SBM installation diagram

Integrated installation for SBM with additional external management.