At Seplos, we understand the critical role of reliable battery management systems (BMS) in large-scale energy storage projects. Our 36S High Voltage BMS Main Control Box is engineered to meet the rigorous demands of industrial and commercial applications. Designed for solar storage and other high-voltage systems, this integrated solution combines a Battery Control Unit (BCU), Battery Monitoring Unit (BMU), and intelligent thermal management (FAN) to deliver unmatched safety, scalability, and performance. For businesses seeking robust partnerships, this system is a cornerstone for projects requiring efficiency, safety, and rapid deployment.
This 36S BMS architecture is particularly suited to system integrators that need centralized monitoring, protection, communication, and thermal management across large lithium battery installations.

Advanced Protection with the BCU: Safeguarding Your Investments
The SP-HV-36S lies at the heart of our BMS, offering multi-layered protection against overcharge, over-discharge, overcurrent, and extreme temperatures. Supporting up to 270 series LiFePO4 battery modules, it ensures operational stability even in demanding environments. Beyond basic protections, the BCU features a multi-level alarm mechanism to preempt risks, minimizing downtime and maximizing ROI for partners managing large-scale installations.
Precision Monitoring with the BMU: Data-Driven Performance
Our High Voltage BMS SP-HV-36S sets industry benchmarks with static voltage sampling accuracy of <5mV across temperatures from -40°C to 125°C, compatible with LiFePO4, ternary, and other lithium chemistries. It monitors up to 36 cells and 18 temperature points, ensuring real-time visibility into battery health. The BMU’s passive balancing (200mA current) extends pack longevity by equalizing cell voltages, while its isolated CAN and RS485 communication interfaces enable seamless integration with energy management systems.
Intelligent Thermal Management: Mitigating Thermal Risks
Thermal runaway is a critical concern in high-voltage systems. Our integrated FAN module activates at 40°C (cell) or 85°C (terminal), cooling components via PWM-controlled 12V/24V fans. This proactive approach prevents overheating, ensuring system safety and compliance with stringent operational standards.
Scalability and Flexibility: Built for Diverse Applications
The 36S BMS supports configurations from 19 to 36 cells and voltages up to 1500V, making it adaptable for projects ranging from grid storage to industrial backups. Automatic coding simplifies deployment, reducing setup time for partners managing bulk orders.
Certified Reliability: Meeting Global Standards
We prioritize compliance and durability. The system meets CLASS B EMC, radiation, and safety certifications, operating flawlessly in temperatures from -40°C to 85°C and humidity up to 90%. These credentials ensure global acceptability, reducing regulatory hurdles for partners.
For OEMs and energy storage integrators, the Seplos high voltage BMS provides a practical platform for projects where electrical protection, environmental tolerance, and communication compatibility must be evaluated together.
Supply Chain Excellence: Delivering on Large Orders
With a 15-day stock turnaround and capacity to supply 10,000 units monthly, Seplos guarantees timely fulfillment for high-volume partners. Our streamlined logistics and rigorous QA processes minimize delays, empowering your projects to stay on schedule.
Conclusion
The 36S high voltage battery BMS embodies our commitment to innovation, safety, and scalability. For businesses seeking a trusted partner to deliver cutting-edge BMS technology at scale, Seplos offers not just a product, but a collaboration built on reliability and performance. Let’s power the future of energy storage—together.
FAQs About the 36S Battery Management System
A 36S battery management system monitors and protects a high-voltage lithium battery configuration with up to 36 monitored cell channels or nodes, depending on the system design. It manages cell voltage, temperature, balancing, alarms, communication, and protection functions.
A 36S BMS is suitable for high-voltage battery systems used in commercial energy storage, industrial backup power, grid-connected storage, solar storage, and other applications that require centralized monitoring and protection.
Yes. The SP-HV-36S supports LiFePO4 and can also accommodate other compatible lithium battery chemistries when the voltage, protection parameters, and system configuration are correctly matched.
The system supports CAN and RS485 communication, allowing battery information to be exchanged with the BCU, inverter, energy management system, and other compatible control equipment.
The system monitors battery and terminal temperatures and works with a PWM-controlled fan module. When predefined temperature thresholds are reached, cooling can be activated to reduce thermal stress and maintain safer operating conditions.
Yes. Its modular BCU, BMU, communication, monitoring, and thermal management architecture makes it suitable for OEMs, system integrators, and larger energy storage projects. Final configuration should be matched to the battery voltage, cell arrangement, inverter, and project requirements.



