Explore our top-performing custom battery management systems and protection boards engineered for diverse industrial and consumer battery configurations.
As the global transition to clean energy gains momentum, the 48V 100A Battery Management System (BMS) has emerged as the baseline architecture for high-demand, low-voltage power infrastructure. Acting as the brain of lithium-ion battery packs, it governs vital safety matrices, communication protocols, and efficiency algorithms.
From localized telecom backup stations to dynamic light electric vehicles (LEVs) and automated guided vehicles (AGVs), the demands placed on a 48V 100A setup require precise engineering. At Shenzhen Litongwei Electronic Technology Co., Ltd., we build reliable, state-of-the-art safety control systems that protect cells from over-charging, thermal runaway, and localized shorts, ensuring maximum lifetime value (LTV) for battery packs.
A look inside the component level of an industrial-grade 48V 100A BMS designed to perform under harsh conditions.
Combines fast-acting hardware interrupts with programmable microcontrollers to cut off circuits within microseconds during severe faults, protecting the MOSFET bank and individual cells.
Supports multiple external Negative Temperature Coefficient (NTC) thermistors. These monitor localized cell temperature and the MOSFET array's operating environment to prevent thermal runaway.
Supports active/passive cell balancing methods to ensure uniform cell voltage. Includes dedicated low-temperature heating control loops that allow safe charging in sub-zero environments.
A typical 48V configuration ranges from 13S to 16S depending on the underlying chemistry (LiFePO4, NMC, or LTO). Standardizing on 100A continuous discharge capacity requires high-performance power MOSFETs with extremely low internal resistance ($R_{DS(on)}$). This minimizes heat generation during peak current loads. Standard designs incorporate communication modules such as CAN bus, RS485, UART, and Bluetooth, giving developers complete oversight of individual cell voltages, temperature profiles, state of charge (SoC), and state of health (SoH).
How Litongwei utilizes automated SMT assembly, real-time MES systems, and rigorous QA pipelines to deliver million-unit orders with consistent reliability.
Litongwei operates two manufacturing facilities: a 13,000 square meter primary headquarters in Shenzhen and a 27,000 square meter high-capacity facility in Dongguan Huangjiang. Equipped with 24 high-speed pick-and-place machines and 12 automated PCBA production lines, we easily scale up production while maintaining strict assembly quality.
Every batch of BMS units undergoes testing, starting with 3D Solder Paste Inspection (SPI) and Automated Optical Inspection (AOI) to find component misalignments before reflow. Fully completed protection boards then undergo functional circuit testing (FCT) and environmental aging, ensuring they perform reliably when deployed in the field.
From local safety switches to cloud-managed predictive maintenance, the tech roadmap for smart BMS systems is rapidly evolving.
Next-generation 48V 100A platforms integrate real-time battery status reporting with cloud servers using IoT modules. By tracking historical parameters, AI models predict failure points, balance cell aging curves, and optimize charging patterns remotely.
Industrial and mobility applications increasingly demand compliance with Automotive Safety Integrity Levels (ASIL). This requires hardware redundancy, independent diagnostic paths, and validated firmware structures to ensure safe operation even during component failures.
Traditional passive balancing dissipates excess energy as heat. Modern active balancing techniques transfer energy from strong cells to weak cells, reducing heat generation and maximizing usable capacity in old or unmatched battery packs.
When sourcing OEM products globally, protecting intellectual property and ensuring regulatory compliance are critical. Litongwei offers clear IP protections and holds over 100 patents in circuit design, automation tools, and software codebases.
We operate under a mature compliance framework, maintaining ISO9001 quality management, ISO14001 environmental management, and IATF16949 automotive quality standards. This guarantees that our products meet the strict safety and environmental standards of key export markets, including CE, FCC, RoHS, and UL.
Our full-process traceability, powered by local MES database tracking, documents the components and test history of every single unit. This level of quality control reduces risk and simplifies recall management for international distributors and OEMs.
Established in 2005, Litongwei has grown into a leading manufacturer of lithium-ion safety control systems, serving international clients across consumer and industrial markets.
We specialize in designing and manufacturing smart BMS for 3C digital devices, electric scooters, electric bicycles, motorcycles, tricycles, golf carts, AGVs, drones, and power tools. By offering IP protection, shared reference designs to lower costs, full traceability, and cloud monitoring tools, we help our clients overcome technical and logistical challenges.
Our corporate mission, "Technology as King, Efficient Service", guides us in developing sustainable, green energy management systems for global markets.
In 2005, we began research and manufacturing of digital Battery Management Systems (BMS). We expanded into power battery management system development in 2006, securing ISO9001 certification in 2007 and ISO14001 certification in 2009.
Secured 8 utility model and design patents in 2011 while expanding production lines. Established the Litongwei Technology Research Institute in 2012. Awarded the Del New Energy Quality Excellence Award in 2014 and the Gold Partner title by Gaogong Lithium Battery in 2015.
Upgraded ISO 9001 and ISO14001 compliance, achieved IATF16949 certification in 2018, and deployed an automated MES warehouse tracking system. Earned the Guangdong Battery Industry Association Innovation Award in 2019, followed by industry recognition in 2020 as a leading brand in light vehicle BMS.
Focused on Smart Manufacturing+, deploying automated IoT diagnostic tools and cloud monitoring systems to support next-generation energy storage networks.
We maintain long-term partnerships with leading companies across the telecommunications, consumer electronics, and automotive sectors.
Collaborating with top-tier global brands including Huawei, Lenovo, Desay, Guoguang, Sunwoda, Eve Energy, Guoxuan High-tech, and more.
Answers to common technical, commercial, and logistical questions from system designers and sourcing managers.
Select from our range of multi-cell protection boards, built with high-quality components for long-term reliability.
Litongwei Electronic