AYAA · EF-009 SMART POWER FOR UAVs

EF-009 6–12S 150A Smart UAV BMS

A smart BMS for 6S–12S NMC Li-ion drone battery packs, supporting 30A charge and 150A continuous discharge. It integrates cell and total-voltage monitoring, 42mA passive balancing, configurable protection, and CAN 2.0 communication for real-time battery status and protection data.

Request EF-009 Integration Review → Get Product Specification →

6–12S Supported NMC Li-ion Cells

30A / 150A Charge / Continuous Discharge

42mA Passive Balancing

CAN 2.0 Data Communication

125 × 63 × 14.5 mm | 200g L × W × H | Weight

Is EF-009 Right for Your 6–12S UAV Battery Pack?

6–12S CONFIGURATION CHECK

Match the pack before integration.

Compare your battery-pack configuration, voltage range, communication protocol and installation space with the EF-009 specification before integration.

12S SERIES WIRING REFERENCE 12 cells shown · EF-009 supports 6–12S

Animated series-current path Cell positive connects to the next cell negative B− = pack negative · 1–12 = voltage-sensing points · B+ = pack positive

COMPATIBLE 12S UAV BATTERY PACKS

Listed battery pack configurations for EF-009

6–12S · 150A DISCHARGE

Soft Pack UAV Battery 10C

6S1P Config

22.2V Voltage

22Ah Capacity

22000mAh soft pack UAV battery

LiPo UAV Battery 15C

6S1P Config

22.2V Voltage

12Ah Capacity

12000mAh LiPo UAV battery

LiPo UAV Battery 25C

6S1P Config

22.2V Voltage

20Ah Capacity

20000mAh LiPo UAV battery

LiPo UAV Battery 25C

6S1P Config

22.2V Voltage

30Ah Capacity

30000mAh LiPo UAV battery

LiPo UAV Battery 25C

6S1P Config

22.2V Voltage

22Ah Capacity

22000mAh LiPo UAV battery

Soft Pack UAV Battery C-RATE TBC

6S1P Config

22.2V Voltage

22Ah Capacity

22000mAh soft pack UAV battery

EF-009 REVIEW 6–12S NMC Li-ion configuration Listed 12S packs: 44.4V · 16–44Ah 30A charge · 150A continuous discharge Confirm CAN 2.0 communication and installation space

6–12S · 150A BMS

125 × 63 × 14.5 mm

EF-009 6–12S 150A Smart UAV BMS
Cell and total-voltage monitoring, configurable protection, 42mA passive balancing, CAN 2.0 communication and host-software access.

6–12S NMC Li-ion 42mA Balancing CAN 2.0 Comprehensive Protection

Share Project Requirements →

◉ Engineering review ♧ Project-fit check ϟ Configuration guidance

ENGINEERING SPECIFICATIONS

EF-009 Key Specifications

Review the 6–12S NMC Li-ion battery-pack configuration, then confirm voltage sensing, balancing, CAN communication and installation requirements before system integration.

Battery and Electrical Configuration	Specification
Product Model	EF-009
Battery Chemistry	NMC Li-ion
Supported Cell Configuration	6–12S
Nominal Cell Voltage	3.7 V
Charging Voltage	Max 4.2 V per cell
Continuous Charge Current	30 A
Continuous Discharge Current	150 A (for 1 hour)
BMS Operating Temperature	−20°C to 90°C
Port Configuration	Common Port · 1 CAN · 1 UART · 2 RS485
Dimensions	125 × 63 × 14.5 mm
Weight	200 g

Measurement, Balancing and Communication	Specification
Protection Trigger Thresholds	±100 mV Accuracy
Temperature Sensor Type	NTC (Cell & FET)
Storage Temperature Range	−40°C to 125°C
MOS Temperature Protection	90 ± 3°C (Recovery at 60 ± 3°C)
Short-circuit Protection	210 ± 30 A (≤400 μs delay)
Discharge Pre-charge Current	≤200 mA
Passive Balancing Enable Condition	Charging State
Passive Balancing Current	42 ± 10 mA
Balancing Enable Voltage	4200 mV
Balancing Enable Voltage Difference	20 mV
CAN Communication	CAN 2.0 (Does not support flight-control protocol)

EF-009 CORE FEATURES

Compact, Cost-Effective & Reliable Power

Four defining characteristics: economical compact design, robust 150A continuous output, CAN 2.0 communication, and simplified integration purely focused on battery protection.

BMS focused on battery protection without flight control overhead

CONNECTED BATTERY DATA

Data Communication & Host Software

Connect EF-009 to external equipment via CAN 2.0 to exchange battery data, and use UART/RS485 host software to configure protection parameters and access historical records.

EF-009 · DATA CONNECTION

CAN 2.0 Communication No Flight-Control Protocol UART / RS485 Access

External Equipment Data acquisition and monitoring systems

EF-009 Smart BMS Battery data · protection status · control

Battery Data Output

Cell voltage Current Temperature SOC SOH Alarms

HOST SOFTWARE

Live View Cell, pack and protection data

Settings Thresholds · recovery · delay

History Fault records and operating states

CAN / UART / RS485 Multiple interfaces for equipment data and host software.

Historical Data Logging Records charge, discharge, and protection events.

Addressing & ID Supports 1-255 comm addresses and 18-Byte ASCII SN.

Note: The CAN interface is solely for equipment data communication. This model does not support flight-control protocol integration.

Configuration Path

Standard EF-009 or Custom UAV BMS?

Choose the standard EF-009 platform when its battery range and interfaces match your project, or share your requirements for an engineering review.

Standard Platform

Choose Standard EF-009

A ready platform for 6–12S NMC Li-ion UAV battery packs with a common-port design.

6–12S NMC Li-ion battery configuration
Common-port design with CAN 2.0 and UART/RS485 communication
Cell-voltage monitoring and 42 mA passive balancing
30 A charge and 150 A continuous discharge ratings

Request Compatibility Review →

Engineering Review

Discuss a Custom BMS

For battery packs, interfaces or control requirements outside the standard EF-009 configuration.

Different cell count or battery chemistry
Project-specific current or wiring requirements
Custom communication or protocol requirements
Project-specific hardware or software settings

Discuss Custom Requirements →

Before integration: please confirm battery chemistry, series count, current requirement, communication protocol and installation space.

EF-009 Resource Center

Technical Resources, Support & Warranty

Request the EF-009 datasheet to review electrical specifications, wiring sequence, CAN 2.0 communication, software functions and warranty information.

Primary Document

Get Product Specification

6–12S NMC Li-ion UAV BMS specifications, 125 × 63 × 14.5 mm dimensions, connection sequence, protection settings, CAN 2.0 and UART/RS485 details.

Request Datasheet →

Installation

Wiring & Port Sequence

Review pack-negative, pack-positive, 6–12S cell-voltage, CAN, UART/RS485 and temperature-sensor connections before power-on.

Request Datasheet → System Connection

CAN 2.0 & Host Software

Review CAN 2.0 data communication support (no flight-control protocol), plus UART/RS485 host-software data, settings and historical records.

Request Datasheet → Engineering Support

Integration Checklist

Prepare battery series count, current profile, communication protocol and installation space for review.

Contact Engineering → Warranty

12-Month Limited Warranty

Review warranty coverage, use conditions and exclusions for the EF-009 product.

Request Warranty Details →

EF-009 UAV BMS Engineering FAQ

Is EF-009 suitable for my specific 6S to 12S drone battery pack?+

EF-009 is a common-port smart BMS specifically designed for 6S–12S NMC Li-ion UAV battery packs. It supports up to 30A charging and 150A continuous discharging. To ensure compatibility, verify that your pack's cell chemistry, series count, and continuous load requirements fall within these specified ranges.

How do I correctly wire a battery pack with fewer than 12 cells (e.g., 6S or 8S)?+

When connecting the cell sampling wires for any configuration between 6S and 12S, you must always start by connecting the B- terminal first, followed by B1 through your highest cell in sequence. When disconnecting, reverse this exact order. An incorrect wiring sequence may cause permanent damage to the BMS.

Can EF-009 communicate directly with my drone's flight controller?+

No. While EF-009 features CAN 2.0 communication, this model is designed as a cost-effective protection system and explicitly does not support flight-control protocol integration. Its CAN interface is limited solely to equipment data communication and parameter configuration[cite: 1].

How does the BMS handle cell balancing during operation?+

EF-009 utilizes a 42 ± 10 mA passive balancing system[cite: 1]. Balancing is highly conditional to ensure efficiency: it only activates during the charging state when a cell's voltage reaches 4200mV and the voltage difference between cells is at least 20mV[cite: 1]. It stops when the difference drops to 10mV[cite: 1].

Will the BMS drain my battery during long-term drone storage or transport?+

To prevent over-discharge during storage, EF-009 features ultra-low power modes[cite: 1]. It draws ≤200 μA in Sleep mode and ≤30 μA in Storage/Transport mode[cite: 1]. Furthermore, if a cell voltage drops below the safety threshold, the BMS will shut down entirely and can only be woken up by connecting a charger[cite: 1].

What is the thermal performance under a continuous 150A load?+

EF-009 provides excellent thermal reliability for its compact size. In a 30°C ambient environment with proper cooling conditions, running a continuous 150A load for 1 hour results in a MOS temperature of approximately 70°C[cite: 1]. The system provides an over-temperature alarm at 80°C and triggers MOS protection at 90°C to ensure safety[cite: 1].

EF-009 vs EF-008 vs EF-006: Which UAV BMS Fits Your Battery Pack?

Find the right balance of current, voltage, and protocol. EF-009 offers a flexible 6–12S configuration with high 150 A discharge, ideal for cost-effective systems not requiring flight-controller integration. Compare it with the EF-008 (6S / 150 A) and EF-006 (12S / 81 A), which provide DroneCAN support and tailored form factors.

Selection Question	EF-009 6–12S / 150 A Discharge	EF-008 6S / 150 A Discharge	EF-006 12S / 81 A Discharge
Which Battery Chemistry Is This Comparison For?	NMC / LiPo UAV battery packs	NMC / LiPo UAV battery packs	NMC / LiPo UAV battery packs
Will It Support My Battery Series Count?	6S–12S	6S	12S
What Continuous Discharge Current Is Specified?	150 A continuous discharge	150 A continuous discharge	81 A continuous discharge
What Charging Current Is Specified?	30 A charge current	60 A charge current	81 A charge current
Will It Fit My Installation Space?	125 × 63 × 14.5 mm	130 × 95 × 10 mm	120 × 94 × 20 mm
How Much Does the BMS Weigh?	200 g specified BMS weight	120 g specified BMS weight	95 g specified BMS weight
How Does It Connect to the UAV and PC?	CAN 2.0 (No Flight Protocol); UART/RS485	DroneCAN / UAVCAN; MODBUS	DroneCAN / UAVCAN; RS485 & Bluetooth
When Should I Consider This Model?	For cost-sensitive 6–12S projects needing high 150 A current without flight-controller integration	For dedicated 6S heavy-duty setups requiring 150 A and direct DroneCAN flight-controller integration	For standard 12S platforms up to 81 A requiring DroneCAN and comprehensive communication
	Request EF-009 Review →	View EF-008 Details →	View EF-006 Details →

EF-009 UAV BMS INTEGRATION

Confirm Your
EF-009 Integration

Share your 6–12S UAV battery-pack and communication requirements. Our team can help you confirm whether the EF-009 150A smart BMS fits your cost-effective UAV project.

6–12S NMC Li-ion UAV battery pack

150A Continuous discharge current

CAN 2.0 + RS485 Data and PC interfaces

EF-009 6–12S 150A Smart UAV BMS