Products / BMS Accessories

BMS Accessories

Current sensors, Hall effect sensors, temperature sensors, and communication interfaces for battery management systems. High-precision components for reliable battery monitoring and protection in ESS and EV applications.

Hall Effect Current Sensor - 500A

Open-loop Hall effect current sensor with 500A range, ±1% accuracy and fast response for BMS current monitoring.

Key Specifications

Primary Current±500A

Accuracy @ 25°C±1.0%

Response Time< 3 µs

Isolation Voltage4.8 kV RMS

Supply Voltage5V DC ±5%

StandardsAEC-Q100, UL 1577

Features

Measurement range: ±500A
Accuracy: ±1% at 25°C
Response time: < 3 µs
Galvanic isolation: 4.8kV
Single 5V supply

Battery Management SystemsEnergy Storage SystemsEV Traction InvertersDC Fast Chargers

NTC Temperature Sensor Assembly

High-precision NTC thermistor temperature sensor with ring lug or epoxy bead packaging for battery thermal monitoring.

Key Specifications

Resistance @ 25°C10 kΩ ±1%

Beta Value3435K ±1%

Temperature Range-40°C to +150°C

Thermal Time Constant≤ 5 seconds

Lead WireSilicone / PTFE, AWG 24-28

StandardsUL 1434, RoHS

Features

R25: 10kΩ ±1%
Beta value: 3435K ±1%
Ring lug (M4/M5/M6) or epoxy bead
Silicone or PTFE insulated leads
Fast thermal response < 5s

Battery Cell Temperature MonitoringBMS Thermal ManagementMotor Temperature Monitoring

BMS Protection Board 16S-48S LiFePO4

Low voltage BMS protection board for LiFePO4 and Li-ion battery packs. 16S to 48S configurations with overcharge, overdischarge, overcurrent, short circuit, and temperature protection. RS485/CAN communication interface.

Key Specifications

Series16S, 20S, 24S, 32S, 48S

Battery TypeLiFePO4 / Li-ion (NMC)

Voltage Range48V-150V DC

Max Current100A-500A

CommunicationRS485, CAN 2.0B, UART

BalancingPassive (60mA) / Active (2A)

Features

16S to 48S configurable series
Overcharge/overdischarge protection
Overcurrent and short circuit protection
Temperature protection (charge/discharge)
RS485 / CAN communication interface

Residential ESSC&I Battery RacksTelecom Backup PowerGolf Cart BatteriesMarine Battery Systems

BMS Communication Module RS485/CAN/Bluetooth

Communication BMS module supporting RS485, CAN 2.0B, and Bluetooth interfaces for real-time battery data monitoring, SOC/SOH display, and remote diagnostics via mobile app and PC software.

Key Specifications

InterfacesRS485, CAN 2.0B, Bluetooth 5.0, UART

ProtocolsModbus RTU, CANopen, Proprietary

Operating Voltage9V-60V DC

Power Consumption< 1W

Data LoggingUp to 30 days onboard

Features

RS485 / CAN 2.0B / Bluetooth 5.0
Real-time cell voltage and temperature display
SOC/SOH estimation and logging
Mobile app (Android/iOS) and PC software
Alarm notifications for fault conditions

Battery Monitoring SystemsRemote ESS ManagementFleet Battery TrackingSmart BMS Applications

BMS Housing & Enclosure IP65 Aluminum

BMS housing enclosure with IP65 protection, aluminum alloy construction, integrated heat sink, and customizable mounting brackets. Designed for BMS protection boards in outdoor energy storage applications.

Key Specifications

MaterialAluminum Alloy 6063

Protection GradeIP65

Surface TreatmentAnodized / Powder Coated

CustomizableYes - size and mounting

SealingSilicone gasket, IP65 rated

StandardsIEC 60529, RoHS

Features

IP65 dust and water protection
Aluminum alloy 6063 construction
Integrated heat sink for BMS cooling
Customizable mounting brackets
Cable glands for wiring entry

Outdoor ESS BMS EnclosureIndustrial Battery CabinetsEV Charging Station BMS Housing

BMS Master-Slave Control Board Accessories

Master-slave control board accessories for large-scale BMS architectures. Includes master controller board, slave monitoring boards, daisy-chain communication cables, and power supply modules for multi-rack ESS deployments.

Key Specifications

ArchitectureMaster-Slave, up to 32 slaves

Slave Channels12S-24S per slave board

CommunicationRS485 daisy-chain, CAN backbone

Isolation2.5kV DC bus isolation

Supply24V DC power module included

Features

Master controller with HMI display
Slave monitoring boards (up to 32 slaves)
Daisy-chain RS485/CAN bus cables
Isolated power supply modules
Stackable architecture for scalability

Utility-Scale ESSContainerized BESSMulti-Rack Battery SystemsData Center UPS

Frequently Asked Questions

What BMS accessories do you supply?

We supply a comprehensive range of BMS accessories including BMS protection boards (16S-48S LiFePO4/Li-ion), Hall effect current sensors (±500A, AEC-Q100), NTC temperature sensor assemblies, BMS communication modules (RS485/CAN/Bluetooth), BMS housing enclosures (IP65 aluminum), and master-slave control board accessories.

Are your BMS components compatible with major BMS platforms?

Yes. Our BMS accessories are designed for compatibility with major BMS platforms including Texas Instruments (BQ series), Analog Devices (LTC series), NXP, and other industry-standard BMS ICs. Communication modules support Modbus RTU, CAN 2.0B, and Bluetooth 5.0 protocols.

Where is PowerConnect Technologies located?

Our headquarters and 25,000 m² manufacturing facility is located in Shenzhen, Guangdong, China (No. 88, Xingye Road, Bao'an District). We have 12 automated production lines, 500+ employees, and export to 30+ countries worldwide. Visit our Factory Tour page for a virtual walkthrough.

What quality certifications does your factory hold?

We hold ISO 9001:2015, IATF 16949:2016, ISO 14001:2015, and our products are certified to UL, TUV, CE, RoHS, and REACH standards. We implement a 5-stage quality control process from incoming material inspection to final outgoing QC with 100% testing. See our Quality Control page for details.

How do I request a quote or sample?

You can request a quote through our Contact page, by clicking the 'Request Quote' button on any product page, or by contacting us via WhatsApp (+86-755-8888-6666) or email (sales@powerconnect-tech.com). We respond to all inquiries within 24 hours.

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