Products-BMSER

Passive Equalization (BMU)

64 Strings（BMU) 32 Strings（BMU) 24 Strings (BMU) 16 Strings (BMU) 12 Strings (BMU)

Battery Cluster Unit (BCU)

Battery Cluster Unit

Battery Array Unit (BAU)

Battery Array Unit

Air-cooled system

1500V/400A High Voltage Box 1500V/250A High Voltage Box 1000V/250A High Voltage Box

Liquid cooling system

1500V/350A High Voltage Box 1500V/250A High Voltage Box

Household BMS

BPU-D40 board

Two Wheeled Vehicle BMS

BPU-D20 series BPU-D10 series

Communication Back Power

BPU-D30 series

Solutions

BESS

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Commercial & Industrial Energy Storage

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Residential Energy Storage

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Electric Vehicle

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BESS

Commercial & Industrial Energy Storage

Residential Energy Storage

Electric Vehicle

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Products

BPU-D30 series BPU-D20 series BPU-D10 series BPU-D40 board 1500V/350A High Voltage Box 1500V/250A High Voltage Box 1500V/400A High Voltage Box 1500V/250A High Voltage Box 1000V/250A High Voltage Box 64 Strings（BMU) 32 Strings（BMU) 24 Strings (BMU) 16 Strings (BMU) 12 Strings (BMU) Battery Array Unit Battery Cluster Unit 12 Strings (BMU) 16 Strings (BMU) 24 Strings (BMU) 52 Strings (BMU)

Solutions

BESS Commercial & Industrial Energy Storage Residential Energy Storage Electric Vehicle

Case

Support

News

About BMSER

24 Strings (BMU)

Max 24-str voltage sampling
Max 28-str temperature sampling
Max 16pcs BMU can be connected via isoSPI

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Features

High Compatibility

Compatible with various types of batteries: LFP, NCM, LTO, etc

Active Equalization

It supports a maximum balance current of 5A to realize power transmission between adjacent cells, and has a regular self-test function

Passive balancing

Supports a maximum of 80mA balancing current

isoSPI Communication

The BMU transmits data to the BCU via isoSPI and up to 30 BMUs can be connected in one isoSPI link

RS-485 Communication

BMU and BCU communicate for updates, fan control/diagnostics, automatic address assignment, and more

Authentication

All plastic parts are UL-94V0 flammable rating Comply with 1500V safety regulations, support 1500V system UL certification

High Compatibility

Compatible with various types of batteries: LFP, NCM, LTO, etc

Active Equalization

It supports a maximum balance current of 5A to realize power transmission between adjacent cells, and has a regular self-test function

Passive balancing

Supports a maximum of 80mA balancing current

isoSPI Communication

The BMU transmits data to the BCU via isoSPI and up to 30 BMUs can be connected in one isoSPI link

RS-485 Communication

BMU and BCU communicate for updates, fan control/diagnostics, automatic address assignment, and more

Authentication

All plastic parts are UL-94V0 flammable rating Comply with 1500V safety regulations, support 1500V system UL certification

Product Parameters

	BMU-B31-12-204	BMU-B31-16-104	BMU-B31-24-204(A)	BMU-B31-52-504
Max cell string	12	16	22	52
Cell voltage sampling range	0-5V
Voltage sampling point	12	16	22	52
Temperature sampling point	14	19	28	56
Balance	Active balance: 2.5A (default) Passive balance: 80mA		Active balance: 2.5A (default) Passive balance: 100mA	Active balance: 2.5A (default) Passive balance: 120mA
Fan	Support max 2-ch fan		N/A	Support max 2-ch fan
Nominal working voltage	1500V
Working power	240mW
Isolation	100MΩ
Communication	RS-485, isoSPI 2-ch HSD output 2-ch I/O output and input		RS-485, isoSPI	RS-485, isoSPI 2-ch I/O output and input
Certification	UL94-V0 Meet UL certification