Wholesale Household Energy Storage Factories & Companies

High-Capacity Smart BESS Manufacturers, Custom Intelligent BMS Controllers, and High-Efficiency Grid-Tied Balcony Micro Inverters

Key Products & System Components

Wholesale LTW 23S 60A Lithium Battery Protection Board

Wholesale LTW 23S 60A Lithium Battery Protection Board with Intelligent BMS - China Suppliers & Factory with CAN/Bluetooth Options

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Wholesale 20S 100A Lithium Battery Protection Board

Wholesale 20S 100A Lithium Battery Protection Board with NTC - Intelligent BMS from China Suppliers & Factory Manufacturers

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Wholesale Cool LED Bluetooth Speaker Waist Bag

Wholesale Cool LED Bluetooth Speaker Waist Bag - Outdoor Cycling Storage Bag from China Suppliers and Factory

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Custom LTWSmart Micro Inverter IP67

Custom LTWSmart Micro Inverter from China Suppliers | IP67 All-Weather Safe, 96.5% Efficiency | Reliable Factory Solution

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Wholesale LTW 23S 60A lithium battery protection board

Wholesale LTW 23S 60A lithium battery protection board with CAN/Bluetooth/heating dedicated intelligent BMS

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Custom LTW 20S 60A Lithium Battery Protection Board

Custom LTW 20S 60A Lithium Battery Protection Board with Bluetooth, Heating, and Smart BMS - China Suppliers & Factory

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OEM 500W Portable Power Bank Bidirectional Inverter

OEM 500W Single-Cell 1kWh Portable Power Bank with Bidirectional Inverter - China Factory Suppliers Solutions

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OEM China Suppliers LTWSmart Micro Inverter

OEM China Suppliers LTWSmart Micro Inverter - IP67 All-Weather, 96.5% Efficiency from Factory for Home Use

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A National High-Tech Enterprise Dedicated to Intelligent Safe Systems

Established in 2005, Shenzhen Litongwei Electronic Technology Co., Ltd. stands as a premium manufacturer specializing in the research, development, and high-precision manufacturing of lithium-ion safety control systems. Over two decades of industrial growth, our core architectures have been integrated into 3C digital products, electric scooters, e-bikes, smart motorcycles, AGVs, drones, high-power tools, and residential household energy storage systems.

Our core mission is to shield your storage solutions against performance deterioration and functional faults. We assist global procurement partners, BESS integrators, and distributors in overcoming tech barriers by offering:

  • Intellectual Property Integrity

    Patent collaboration mechanisms that mitigate infringement risks in demanding Western markets.

  • Industry Standard Shared Boards

    Modular board topologies that drastically drop tooling expenses and expedite time-to-market.

  • End-to-End Traceability & Remote Operation

    IoT cloud diagnostics that allow remote hardware optimization and system-level monitoring.

Litongwei R&D Center

Why Global Enterprises Partner with Litongwei

We bridge high-capacity capabilities with continuous innovation to secure your microgrids and storage systems.

40,000+
Sqm Total Facilities (SZ & DG)
15M+
Monthly PCBA Output Capacity
10% +
Annual Sales Reinvested in R&D
100+
Patent Assets & IP Protection

Production Scale

Shenzhen houses 13,000+ sqm of advanced manufacturing floor, and our Dongguan Huangjiang factory features 27,000+ sqm space, run with 24 high-speed pick-and-place SMT machines and 12 state-of-the-art PCBA flow lines.

R&D Priority

Our commitment to safety controllers and battery topology optimization is backed by dedicating more than 10% of gross profits annually for the past five years to the Litongwei Technology Research Institute.

Intellectual Protection

With over 100 patents in circuit layouts, test architectures, and system firmware, we stand as a shield for downstream household energy storage brands operating in litigious markets.

Technical Roadmap of Next-Gen Household Energy Storage (BESS)

In the rapidly evolving landscape of clean energy transition, Household Battery Energy Storage Systems (BESS) have evolved from simple battery backups to highly sophisticated grid-interactive smart systems. As international regulatory bodies enforce stricter grid stabilization policies (such as California's SGIP, Germany's KfW standards, and Australia's AS/NZS 4777.2), the technical requirements for household energy storage devices are rising. To succeed in this competitive landscape, system integrators and distributors must source from suppliers capable of executing a reliable, future-proof technological roadmap.

1. Transitioning from LFP to Smart Solid-State and Sodium-Ion Architectures

Lithium Iron Phosphate (LiFePO4 or LFP) remains the gold standard in residential safety due to its inherent thermal stability, non-toxic chemical structure, and long lifespan (exceeding 6,000 cycles at 80% Depth of Discharge). However, progressive companies are preparing for multi-chemistry compatibility. Our hardware and Battery Management Systems (BMS) are designed to support emerging cell tech, including:

  • Sodium-ion (Na-ion): Offering outstanding cold-weather performance and a lower cost structure for regions experiencing extreme sub-zero winters.
  • Solid-State: Offering high volumetric energy density to reduce the overall indoor footprint of wall-mounted energy storage packs.

2. Intelligent Battery Management Systems (BMS) as the Central Nervous System

A battery pack is only as reliable as its BMS. To prevent issues like localized heat spikes, dendrite formation, or premature cell aging, Litongwei focuses on developing 10S to 24S intelligent BMS platforms. These boards integrate high-resolution data acquisition circuits to monitor individual cell voltage (with ±1mV accuracy), temperature via multiple NTC thermistor points, and charge/discharge currents.

Moreover, connectivity is key to modern home energy ecosystems. By integrating CAN bus, RS485, and Bluetooth protocols directly onto our safety boards (such as the LTW 23S 60A and 20S 100A systems), we ensure flawless integration between the battery array, the hybrid inverter, and smart home energy controllers. Built-in heating modules are also available, ensuring safe operations down to -20°C by utilizing controlled external heater pads before allowing high-current charging.

3. Bidirectional Inverters and Balcony Micro Inverters

As urban housing options adapt, high-capacity, grid-tied balcony energy storage systems are becoming popular. Litongwei's custom IP67-rated micro-inverters deliver a high 96.5% efficiency rate, minimizing conversion loss and managing harsh outdoor thermal challenges. Integrating bidirectional topology allows seamless alternating current (AC) to direct current (DC) storage flow, providing a highly reliable plug-and-play solution for residential applications.

Corporate Vision & Quality Control

Corporate Vision & Quality Excellence

LITONGWEI operates on the core principle of "Technology as King, Efficient Service." We aim to be a global provider of intelligent, environmentally sustainable green energy management solutions.

By designing and manufacturing premium BMS, portable power systems, and microinverters, we ensure cleaner power transmission and storage, lowering greenhouse emissions and promoting true energy independence.

Two Decades of Continuous Innovation

2005
2005 - 2010

Commenced intensive R&D on digital BMS platforms. Obtained ISO9001 quality certification in 2007 and ISO14001 environmental safety standard validation in 2009.

2010
2010 - 2015

Secured 8 core utility model patents. Established the Litongwei Technology Research Institute in 2012. Recognized with the Quality Excellence Award in 2014.

2015
2015 - 2020

Upgraded ISO standard frameworks. Secured key IATF16949 certification in 2018 and integrated full-process MES database tracking for automation lines.

2020
2020 - 2025

Executed our Smart Manufacturing+ strategy, integrating advanced IoT systems into industrial micro-grids, balcony storage, and advanced active balance BMS models.

China Factory 4.0: Supply Chain Resilience and Global Efficiency

Many international buyers looking to secure energy storage solutions ask: *How do we ensure consistency when sourcing systems at scale?* The answer lies in the digital transition of China's premium production floors.

1. MES Integration and Full-Process Component Traceability

Litongwei's manufacturing systems integrate a complete MES (Manufacturing Execution System). This network tracks every step of production:

  • Incoming QA (IQC): Automated checking of resistors, capacitors, processors, and PCBs.
  • SMT Assembly: Real-time component tracking on high-speed placement machines.
  • AOI (Automated Optical Inspection): Computer-vision checks for soldering accuracy.
  • Functional Verification (FCT): Testing every safety board under realistic load situations to log parameter behaviors.

This level of detail means every single BMS board shipped is registered in a database, allowing us to trace any component issue down to its specific lot code.

2. Regional Supply Chain Synergies

Located in Shenzhen and Dongguan, our factories are in the center of the world's most robust lithium supply chain ecosystem. We maintain long-term partnerships with cell manufacturers (such as Eve Energy, Sunwoda, and Guoxuan High-tech) and key semiconductor companies, helping us maintain stable lead times and keep material costs manageable.

3. Navigating Global Procurement Challenges

Procurement teams need to balance multiple priorities: safety, cost, and logistics. High shipping rates and compliance hurdles require a proactive strategy:

  • Reducing Shipping Footprints: Designing modular storage systems that optimize shipping space and reduce logistics costs.
  • Simplifying Integration: Shipping pre-configured systems that require minimal onsite setup, lowering labor costs for installers.
  • Compliance Assurance: Providing full test reports (UN38.3, CE, IEC) to ensure smooth customs clearance and utility approval.

Our Valued Industrial Partners

We collaborate closely with top-tier brands to deliver reliable energy solutions worldwide.

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Industry QA & Technical Reference

Answers to technical and regulatory questions common among energy storage procurement managers.

What are the critical considerations when matching a custom BMS with third-party inverter brands?
The main challenge lies in the communication protocol interface. A custom BMS must support common protocols (like CAN 2.0B or RS485 Modbus) and match the specific register maps of inverter brands (such as SMA, Victron, or Pylontech). Litongwei offers pre-configured protocol profiles that facilitate easy integration and setup for system installers.
How does an IP67 rating protect outdoor balcony micro-inverters from extreme weather?
An IP67 rating ensures complete protection against dust ingress and allows short-term submersion in water. We utilize specialized thermal potting compounds to transfer heat directly to the outer aluminum chassis, avoiding the need for fans, which can be a point of mechanical failure over time.
Why is battery heating technology critical for cold climates?
Charging LFP batteries at temperatures below freezing can lead to lithium plating, which permanently degrades battery life. Our BMS includes a smart pre-heating feature: if temperature sensors register below 0°C, the system directs charging power to warm up the cell heating pads before allowing energy flow into the cells.
What steps does Litongwei take to prevent patent infringements?
We hold over 100 patents in circuit topologies, firmware code, and test processes. Our engineering team conducts thorough patent searches before releasing new hardware designs to help overseas customers avoid patent infringement issues.
How does the MES (Manufacturing Execution System) trace assembly quality?
Our MES laser-etches a unique QR code onto each PCB board at the start of assembly. Every SMT pick-and-place step, optical check, and testing stage is recorded. If a field issue occurs, we can look up the QR code to find the exact component lots and machine calibration data associated with that unit.

Advanced Inverters & System Integration

Custom LTWSmart Micro Inverter for Home Balcony Use

Custom LTWSmart Micro Inverter from China Factory | IP67 All-Weather Safe, 96.5% Efficiency, Ideal for Home Balcony Use

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Wholesale 30A Lithium Battery Protection Board LTW 13S

Wholesale 30A Lithium Battery Protection Board LTW 13S - China Suppliers and Factory, Low-Power Intelligent BMS

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Wholesale 500W Portable Power Bank 1kWh

Wholesale 500W Portable Power Bank with 1kWh Capacity - China Suppliers Factory Bidirectional Inverter for Efficient Energy Storage

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Wholesale China LED Bluetooth Speaker Waist Bag

Wholesale China Suppliers Factory Cool LED Bluetooth Speaker Waist Bag for Outdoor Cycling and Night Activities

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OEM 500W Portable Power Bank 1 kWh

OEM 500W Portable Power Bank 1 kWh with 3.2V PV Bidirectional Inverter - China Suppliers & Factory Direct Energy Solution

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Wholesale 60A Lithium Battery BMS CAN Bluetooth

Wholesale 60A Lithium Battery BMS with CAN/Bluetooth Heating - China Suppliers & Factory Model LT-GP24S013-23S-5-60-68R-5

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Custom LTWSmart Micro Inverter IP67 Weatherproof

Custom LTWSmart Micro Inverter - IP67 Weatherproof, 96.5% Efficiency | Reliable China Suppliers & Factory for Home Use

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Custom LTW 10S 20A lithium battery protection board

Custom LTW 10S 20A lithium battery protection board with CAN communication port intelligent BMS

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