Custom Li-ion Battery Pack Manufacturer & Assembly Factory
We are a dedicated manufacturing facility engineering OEM lithium-ion battery packs for demanding applications.
Precision Engineering: From versatile cylindrical (18650/21700/26650) and prismatic NCM cell selection to advanced Smart BMS programming.
End-to-End Execution: We handle complete structural design, moving your project seamlessly from prototype to mass production.
Proven Reliability: Built for performance, safety, and longevity. Zero guesswork involved.
Built to Your Exact Specifications
As a direct wholesale lithium-ion battery pack factory, we don’t believe in “one size fits all.” We configure our packs using the optimal cell morphology to match your device’s exact power curve and spatial limits.
🧪 Chemistry Options: High energy density NMC or NCA configurations optimized for your specific application.
📐 Comprehensive Cell Formats:
Cylindrical (18650/21700/26650): Premium cells for compact, high-discharge applications (e-bikes, medical, power tools).
Prismatic NCM (Aluminum-shell): High-capacity cells for heavy-duty industrial uses (AGVs, forklifts) requiring structural stability.
⚡ Scalable Voltage & Capacity: Fully customizable scaling, from 3.7V single cells to high-voltage multi-series packs (12V / 24V / 36V / 48V / 72V+).
🚀 Tailored Discharge Rates: Standard continuous discharge or High C-rate configurations engineered to perfectly handle your equipment’s peak power demands without thermal runaway.
🔌 Custom Connectors & Terminals: Seamless integration with your devices. We offer fully customizable output interfaces, including XT60/XT90, Anderson connectors (SB series), Aviation plugs, heavy-duty M6/M8 ring terminals, and standard JST/Molex communication wiring harnesses.
From Concept to Deployment: Your Custom Li-ion Project in 4 Steps
Industrial-Grade Quality Control (MES & SOP)
Consistency is the lifeline of battery manufacturing. Our production lines are governed by strict Standard Operating Procedures (SOP) to ensure zero defects in your bulk orders. We don’t just assemble; we engineer reliability into every custom Li-ion battery pack.
100% Automated lithium-ion Battery Cell Sorting & Matching
A stable pack relies on perfect cell consistency. Before assembly, every single cylindrical or prismatic cell passes through our automated sorting machines. We group cells with strict tolerances for Capacity (Ah), Open Circuit Voltage (OCV) (within ±2mV), and Internal Resistance (IR) (within ±2mΩ). This eliminates the “barrel effect,” ensuring maximum pack capacity and preventing premature degradation.
Precision Automated Spot & Laser Welding:
Weak joints lead to high resistance and thermal runaway. For our wholesale lithium ion battery pack factory lines, we utilize CNC double-sided automated spot welding for cylindrical cells and precision laser welding for aluminum-shell prismatic cells. By using pure nickel strips and customized busbars, we guarantee ultra-low contact resistance, excellent thermal dissipation, and structural integrity that withstands high-vibration environments.
Comprehensive Aging & BMS Load Testing:
We don’t just test the cells; we test the entire system. Every assembled OEM industrial lithium ion battery pack enters our aging testing cabinets. We conduct 100% full charge/discharge cycling at specified C-rates to verify the Smart BMS cut-off parameters (Over-voltage, Under-voltage, Over-current). We also simulate real-world load profiles to guarantee out-of-the-box reliability.
Global Certification & Class 9 Logistics:
Exporting custom lithium-ion battery packs requires strict adherence to international safety laws. We provide immediate access to UN38.3 and MSDS test reports for seamless Class 9 dangerous goods shipping. Furthermore, our engineering team actively assists B2B partners in passing market-specific lab tests to acquire CE, RoHS, UL1642 (Cells), or UL2054 (Packs) certifications, smoothing your path to market.
Engineered for Every Environment: Core Applications
Off-the-shelf batteries rarely meet the complex power demands of specialized industrial equipment. As your dedicated supply chain integrator, we design custom LiFePO4 battery packs tailored to the exact discharge profiles and spatial constraints of your sector. Whether you are replacing heavy SLA (lead-acid) systems or prototyping next-generation technology, Here is a look at just a few of the demanding sectors we reliably power every day:
Powered by World-Class NCM Cell Technologies
A high-performance custom Li-ion battery pack starts with exceptional core chemistry. We exclusively source Grade-A cylindrical (18650/21700) and prismatic NCM cells from industry-leading manufacturers, ensuring ultimate energy density, high C-rate discharge, and consistent cycle life.
Certified for Global Compliance & Safe Export
Navigating international lithium battery regulations doesn’t have to be a bottleneck. Our custom Li-ion packs and manufacturing processes comply with the strictest global safety standards, ensuring seamless market entry and fully compliant Class 9 dangerous goods shipping worldwide.
The lifespan of a custom Li-ion battery pack depends on the cell chemistry and BMS configuration. Standard NMC/NCA lithium-ion packs typically last between 500 to 1,000 full charge cycles before dropping to 80% of their original capacity. Proper BMS management and avoiding deep discharges will significantly extend this lifespan.
As a direct manufacturer, we offer flexible MOQs to support our B2B clients. For custom OEM projects requiring new molds or specific BMS development, the MOQ is generally 50 to 1,000 units. However, we can accommodate smaller pilot runs (e.g., 50-100 units) for testing and validation purposes.
Yes. Our engineering team designs and programs custom BMS boards in-house. We can integrate advanced communication protocols like CANbus, SMBus, RS485, and I2C, allowing your device to accurately read State of Charge (SOC), State of Health (SOH), and individual cell voltages.
Yes, we design all our custom battery packs to meet international safety standards. We provide UN38.3 and MSDS test reports for shipping compliance. If your market requires specific regional certifications like UL1642, UL2054, or CE, we offer full testing and certification assistance.
Once the prototype is approved, standard mass production takes approximately 3 to 4 weeks depending on volume. New custom designs requiring specialized tooling or unique enclosures may take 4 to 6 weeks for the initial batch.
We have extensive experience in global logistics. All packs are packaged according to UN regulations for Class 9 dangerous goods. We offer FOB, CIF, and DDP (Delivered Duty Paid) shipping options via specialized air and sea freight forwarders to ensure safe, compliant delivery to your warehouse.
