Milbay Australia


Battery Management Systems

Energy Storage Systems (BESS) - Buses - Rail - Passenger and commercial vehicles - Motorcycles - Boats

Energy Storage Systems (BESS) - Buses - Rail - Passenger and commercial vehicles - Motorcycles - Boats

Milbay Australia offer a range of scalable battery management systems compatible with our range of Lithium Phosphate (LiFePO4) cells in system voltages from 12V DC to 900V DC.

Whether you’re looking for an intelligent battery management system or complete battery system for large scale fixed energy storage, public transport or a personal electric vehicle conversion Milbay can supply a solution to meet your project requirements.

Request BMS information

Model Price
BMU-12S $ P.O.A
BMU-24S $ P.O.A
BMU-48S $ P.O.A
BMU-60S $ P.O.A

E-Pow logo EV05 Series Battery Management Platform

The E-Pow™ BMS platform is suitable for a wide range of electric vehicle battery systems for commercial vehicles, passenger cars, bus and special vehicles, and is compatible with lithium manganate, ternary, LiFePO4 (Lithium iron phosphate) and Lithium titanate battery cells. The E-Pow EV05 flexible modular platform allows battery designers to locate the battery cells in seperate environmentally controlled battery enclosures connected in series with centralised battery system management.

Topology: BCU (Battery Control Unit / main controller) plus one or more BMU (Basic Management Unit / slave controller)
Cell Balancing: Passive (dissipated) equilibrium:100mA
CAN communication Vehicle CAN (500K), charging CAN (250K), internal CAN (500K)
Country of manufacture China (mainland)

Working principal A working system design requires a minimum of 1 x BCU main controller unit plus a minimum of 1 x BMU slave controller as each unit performs different tasks within the battery management system.
The master BCU communicates with the slave BMUs over a dedicated internal CAN communication channel to create a total Battery Management System (BMS).

EV05 Features and options

Configurations up to 300 cells in series (900VDC)
Multiple Temperature sensor
Fan and heater control
CAN communication integration
OBD diagnostics
Configuration software (PC based)
Suitable for modular battery systems
Suitable for slow or FAST charging
BCU, BMU and cell connection cables customised on request

EV05 Battery Management Systems include detailed installation instructions.


Master BCU modules communicate accross CAN network channels with slave BMC modules and other CAN nodes such as the vehicle controller and battery charging system to undertake intelligent actions and adjustments to the battery system in real time.

BCU (Battery Control Unit) module manages
Overal battery system discharge and charge
Battery system performance.
Calculating SOH and SOC values
Performing battery system OBD malfunction analysis
CAN battery system messages and alarm alerts.

E-Pow BMU 24S

BMU (Basic Management Unit) slave modules manage
Individual battery cell voltage detection
Single cell temperature detection
Cell balance management
Balanced failure self-diagnosis functions
Battery enclosure thermal management (heating + cooling).

EV05 basic connection topology
E-Pow EV05 Technical Specifications
Description Technical parameters
BMS working voltage range 12V (6V~18V), 24V (12V~32V)
BMS Operating power(rated / peak) BCU (Battery Control Unit): 3.6W / 120W (peak duration 10mS)
BMU (Basic Management Unit): 2.8W / 120W (peak duration 10mS)
BMS Static power consumption BCU (Battery Control Unit): ≤1mA Each BMU (Basic Management Unit): ≤0.1mA  
BMS Operating temperature range -40ºC~85ºC
BMS Storage Temperature Range(ºC) -40ºC~95ºC
BMS Operating Humidity Range(%) 5%~95%
Single cell voltage detection range 0~5V
Single  cell voltage sampling accuracy ≤±10mV ( 2V~5V@-25ºC~55ºC )
Single  cell voltage sampling frequency <20mS
Total voltage detection channel number 2 (Check the internal total voltage and the external total voltage)
Total voltage measurement range 0V~900V
Total voltage detection accuracy <0.5%FSR ( FSR: Full-Scale Range )
Temperature measurement range -40~125ºC
Temperature detection accuracy ≤±1ºC (NTC,@0~65)
≤±2ºC (NTC,@-40~0)
≤±2ºC ( NTC,@65~125 )
Current detection accuracy <1%FSR (FSR: Full-Scale Range )
Insulation monitoring Divided into three situations,
0: no fault (> 500 ohms / volts),
1: general failure (100 to 500 ohms / volts),
2: Severe fault (<100 ohm / volts)
Insulation fault judgment basis GB/T 18384.3-2001
SOC estimation accuracy <8% 
( BEV (Battery Electric Vehicle) working condition )
Balanced mode Passive equilibrium: 100mA
External CAN interface number 2 high-speed CAN (where vehicle CAN can be configured with CAN wake-up function)
BCU (Battery Control Unit) relay control road  number 6-way (4-way control power supply positive, 2-way control power ground
BMU (Basic Management Unit) relay control road number 2 way (can only control the power supply  ground)
Relay power (peak)In general, intermediate relays are not required
National standard charge signal detection Support slow charge CC and CP signal detection; 
support fast charge CC2 signal detection.
EMC performance testing E-POW Enterprise reference standard
Fault data record YES
BCU (Battery Control Unit) Weight 0.65KG
24S-BMU weight 0.63KG
36S-BMU weight 0.84KG
48S-BMU weight 1.01KG
60S-BMU weight 1.25KG

E-Pow EV05 BMS cable assembly components

Epow BMU 12 pin cable assembly
EV05 BMU 12 pin cable assembly
Epow BMU 40 pin cable assembly
EV05 BMU 40 pin cable assembly
Epow BMC 24S Cell voltage sense cable assembly
EV05 BMC 24S 26 pin cell voltage sense cable assembly
Epow BMC 34 pin cable assembly
EV05 BMC 34 pin cable assembly
Epow BMI voltage shunt assembly
EV05 voltage shunt assembly

Example EV05 compatible 200Ah 3.2V Lithium Phosphate Battery Cell

Milbay SP-LFP-200AHA cell specifications