Enjoy Your First Order !
About Us
Home » About Us

SYLJ® | Your Energy Storage Problem-Solving Partner

China Lithium Battery & Energy Storage Supply Chain Partner

At Shenyang Lanjian Technology Co., Ltd. (SYLJ®), we believe the transition to clean energy requires more than advanced technology. It requires reliable batteries, stable supply chains, professional technical support, and energy storage solutions that work in real-world application.

SYLJ® | Lithium Battery & Energy Storage Solutions

Grade-A Cells | Battery Manufacturing | BMS | ESS/BESS | OEM/ODM
TÜV Rheinland Verified | SGS Verified | Made-in-China Gold Member Since 2018

About SYLJ®

SYLJ® is a China-based lithium battery and energy storage solutions company headquartered in Shenyang, Liaoning, China, an important industrial and equipment manufacturing hub in China.

With extensive experience in the lithium battery and new energy supply chain, SYLJ® connects international customers with qualified Chinese battery cell manufacturers.Supply-chain partner including EVE/REPT/CORNEX/GREATPOWER/GOTION/DEJIN etc.

Our civilian energy storage manufacturing base is located in Shenzhen, China, leveraging Shenzhen's mature technology, electronics manufacturing, and new energy supply chain ecosystem.

SYLJ® provides lithium-ion battery cells, LiFePO4 batteries, battery packs, residential energy storage systems, commercial and industrial battery energy storage systems (C&I BESS), BMS solutions, and OEM/ODM energy storage solutions for customers worldwide.

Lithium Battery Supply Chain & Grade-A Cells

SYLJ® works with established Chinese lithium battery cell manufacturers and qualified supply-chain partners to provide reliable access to Grade-A prismatic lithium-ion cells for energy storage and battery applications.

Depending on the selected cell model and supplier specification, our cell supply can support tight consistency requirements, including specified capacity tolerance of ±0.5% and voltage deviation of ≤5mV.

Our supply-chain capabilities help customers improve procurement reliability, product consistency, and long-term energy storage project planning.

Battery Manufacturing & Quality Control

SYLJ® applies automotive-oriented manufacturing and quality-control practices across battery production and system assembly.
Our quality management process includes 218 QC checkpoints, covering key stages from incoming materials and cell inspection to battery assembly, testing, and final quality control.

A reported defect rate of 0.12%, compared with an industry reference level of approximately 1.5%, demonstrates our focus on manufacturing consistency and product reliability.
Quality-control procedures and performance specifications may vary by product model, cell supplier, and project requirements.
 
BMS & Battery Management Technology

SYLJ® provides intelligent BMS solutions designed to improve battery safety, monitoring, balancing, and system integration.
Key BMS functions include:

Real-time monitoring of voltage, current, temperature, and battery status
Overcharge, over-discharge, and over-temperature protection
Active and passive cell balancing
CAN and RS485 communication
Bluetooth connectivity for selected applications
Integration with energy storage inverters and other system components

Depending on the selected battery chemistry, cell model, operating conditions, and system configuration, our solutions can support long-cycle-life energy storage applications, including systems designed for **up to 10,000+ cycles at 80% DoD**.

Residential, Commercial & Industrial Energy Storage

SYLJ® supplies energy storage solutions for a wide range of applications, including:

Residential Energy Storage Systems (Residential ESS)
Commercial & Industrial Battery Energy Storage Systems (C&I BESS)
Solar energy storage
Off-grid power systems
Backup power
Telecom backup power
RV and mobile power applications
Renewable energy integration
Customized energy storage projects

Our solutions can be configured according to application requirements, including battery capacity, voltage range, inverter compatibility, communication protocols, and system architecture.
 
OEM & ODM Energy Storage Solutions

For system integrators, distributors, EPC companies, and energy storage brands, SYLJ® provides flexible OEM and ODM battery solutions.

Customization options include:

* Custom battery voltage
* Custom battery capacity
* Modular battery architecture
* Custom battery pack design
* BMS and communication integration
* Private-label branding
* Customized enclosure and system configuration

These solutions allow customers to develop energy storage products under their own brands while leveraging China's established battery manufacturing and supply-chain capabilities.

Solutions for Distributors & System Integrators

SYLJ® supports distributors and system integrators looking for reliable, market-ready battery and energy storage products.
Available solutions include:
* Private-label lithium battery products
* Residential solar ESS
* C&I BESS
* Plug-and-play battery systems
* RV power solutions
* Telecom backup batteries
* Customized battery packs

Our goal is to help international partners shorten product development cycles, improve supply-chain efficiency, and bring reliable energy storage products to market faster.

Global Markets & International Certifications
SYLJ® battery and energy storage solutions have been supplied to customers in **30+ countries and regions**.
Depending on the product and target market, applicable certifications and compliance standards may include:
Europe:** CE, RoHS, VDE
North America:** UL1973, UN38.3
Asia-Pacific:** KC, PSE, BIS
Certification availability depends on the specific product model, configuration, and target market.

Project Experience & Supply Chain Transparency

SYLJ® has participated in **120+ battery and energy storage projects worldwide**, supporting customers across residential, commercial, industrial, renewable energy, and backup power applications.

For applicable products and orders, batch-level traceability systems can provide information related to **cell origin, manufacturing batches, testing, and quality-control records**, helping customers improve supply-chain visibility and product traceability.

Why Choose SYLJ®?

China-Based Supply Chain: Headquarters in Shenyang with energy storage manufacturing capabilities in Shenzhen.
Grade-A Cell Supply: Access to qualified Chinese lithium battery cell manufacturers and supply-chain partners.
Cell Consistency: Specified capacity tolerance of up to ±0.5% and voltage deviation of ≤5mV for applicable cell models.
Quality Control: 218 QC checkpoints across key production stages.
Long Cycle Life: Energy storage configurations supporting up to 10,000+ cycles under specified conditions.
Flexible OEM/ODM: Customized voltage, capacity, battery packs, BMS, and branding.
Multiple Applications: Residential ESS, C&I BESS, solar storage, backup power, RV, and telecom.
Global Compliance: CE, RoHS, VDE, UL1973, UN38.3, KC, PSE, BIS and other applicable standards.
International Experience: Projects and customers across 30+ countries and regions.
Supply Chain Visibility: Batch-level traceability for applicable products and orders.

SYLJ® — Your Lithium Battery & Energy Storage Supply Chain Partner in China

From Grade-A lithium battery cells and battery packs to residential ESS, C&I BESS, and customized OEM/ODM solutions, SYLJ® helps international distributors, system integrators, EPC companies, and energy storage brands access reliable Chinese battery manufacturing and supply-chain resources.

Headquartered in Shenyang, China | Energy Storage Manufacturing in Shenzhen | Serving Global Energy Storage Markets
 

PRODUCTION LINE SUPPORTING PRODUCT SOLAR PANELS

The production line is specifically designed to manufacture solar panels. With advanced manufacturing processes and automated equipment, we efficiently produce high-quality solar panels. The production line boasts precision processing capabilities to ensure exceptional performance and reliability of the solar panels throughout the manufacturing process. Committed to providing environmentally friendly and efficient renewable energy solutions, this production line plays a crucial role in achieving this goal.
CONTACT US

QUICK LINKS

PRODUCT CATEGORY

GET IN TOUCH

 Shenyang Lanjian Technology Co.,Ltd.
  Phone:+86-18640513296 / +86-13072424210
  Telephone:+86-024-25771937
  Email:info@syljbattery.com
   Address:Building 15, No. 184 Nujiang Street, Huanggu District, Shenyang, Liaoning, China
​Copyrightt © 2023 Shenyang Lanjian Technology Co., Ltd. All rights reserved. Support by Leadong. Sitemap | Privacy Policy