Wholesale 18650 3.7V 2500mAh Li-ion Battery Cells UN38.3 CE Certified Steel Shell Rechargeable Batteries Factory Direct

This premium-grade, cylindrical 18650 3.7V 2500mAh Lithium-ion battery cell delivers a highly stable, energy-dense power source engineered to meet the stringent demands of modern B2B industrial operations and consumer electronics manufacturing. Encased in a rugged steel shell, this rechargeable cell resolves critical power delivery challenges by ensuring continuous voltage stability, minimal internal impedance, and enhanced thermal endurance across an extended operating range.

Designed for high-precision battery pack assembly, this cylindrical cell serves as a dependable building block for mission-critical hardware, ranging from lightweight light-emitting diode (LED) lighting systems and high-capacity portable power banks to demanding e-mobility solutions. Utilizing an advanced industrial-grade design that facilitates over 500 charge-discharge cycles, this component significantly reduces the overall cost of ownership and hardware failure rates, ensuring seamless operation for end-users worldwide.

Robust Steel Shell Armor: Encased in a premium protective steel housing to mitigate mechanical impacts, prevent physical deformity under structural stress, and maximize long-term cell integrity.

Minimized Internal Impedance: Engineered with low internal resistance (less than 60mΩ) to decrease internal heat generation, prevent premature thermal throttling, and ensure optimal energy conversion efficiency.

Extended Fleet Lifecycle: Delivers a reliable service lifespan with over 500 full charge-discharge cycles, retaining superior nominal capacity and reducing frequent fleet replacement cycles.

Global Compliance Framework: Fully tested and compliant with international shipping and safety benchmarks, including ISO9001, BIS, CE, RoHS, and UN38.3 certifications, guaranteeing smooth customs clearance and market entry.

Prolonged Shelf Resilience: Formulated with an exceptionally low self-discharge rate, maintaining structural and chemical stability for up to a 10-year shelf life under proper storage conditions.

E-Mobility & LEVs: Optimized for light electric vehicles, including E-Bikes, electric scooters, and smart mobility fleets requiring scalable multi-cell configurations and continuous operational runtimes.

Portable Power Infrastructure: The primary choice for engineering high-efficiency consumer and industrial power banks, uninterrupted power supply (UPS) backups, and field-ready charging stations.

Industrial & Tactical Illumination: Engineered to sustain steady voltage regulation in high-lumen professional LED flashlights, emergency architectural lighting, and mining safety gear.

Mobile Computing Platforms: Provides stable, long-lasting power modules for ruggedized laptops, portable diagnostic hardware, and remote field computing devices.

Professional Photography Equipment: Ideal for digital cameras, studio flash power packs, and stabilization gimbals that demand rapid energy availability and minimal downtime.

1.  Capacity Customization:Tailor cell capacity for diverse needs.

2.  Voltage Adjustment:Modify voltage to fit specific applications.

3.  Shape & Size Tailoring:Produce cells in non - standard shapes or sizes.

4.  Battery Pack Assembly:Build custom packs with desired cell connections.

5.  Special Packaging:Offer unique packaging, e.g., waterproof or shock - proof.

6.  Performance Optimization:Enhance cells for fast - charging or long - cycle life.

We provide dedicated end-to-end B2B technical support designed to streamline your product development lifecycle:

•  Engineering Consultations: Access to dedicated electrochemical engineers to optimize pack designs, thermal dissipation, and matching impedance calculations.

•  12-Month Factory Warranty: Full quality assurance coverage ensuring immediate replacement or remediation for manufacturing variances.

•  Document & Certification Supply: On-demand provision of comprehensive Material Safety Data Sheets (MSDS), UN38.3 test reports, and transport safety certifications.

•  Scalable Output Capacity: Driven by a production framework capable of outputting 100,000 pieces per day to ensure stable supply continuity for large-scale operations.

1. Wooden Box Packaging

Sturdy and durable, wooden boxes are perfect for large - scale battery shipments. Their strong build protects batteries during transit, ensuring safe arrival for long - distance hauls.

2. Cardboard Box Packaging

Lightweight and cost - effective, cardboard boxes suit retail and small - batch orders. Easy to handle and stack, they streamline distribution from factory to customer.

3. Pallet Packaging

Designed for warehouse storage and logistics, pallet packaging maximizes space. Sturdy pallets allow stable stacking and forklift - friendly handling, boosting supply chain efficiency.

1. Ocean Freight

For large - volume battery shipments, ocean freight is cost - effective. Wooden crates and pallets work well, ensuring secure and affordable transport over long distances.

2. Air Freight

Time - sensitive or small orders benefit from air freight's speed. Corrugated boxes and lithium - compliant packs meet air travel safety and deliver products quickly.

3. Courier Services

Ideal for samples or urgent items, courier services offer door - to - door delivery. Using corrugated boxes and lithium - compliant packages via DHL, UPS, or FedEx, we ensure prompt and reliable service.

Q: What is the Brand Name?

A: The Brand Name is YUNFAN.

Q: Where is the Place of Origin?

A: The Place of Origin is Shenzhen,China.

Q: What Certifications does it have?

A: It has CE,UL,RESH Certifications.

Q: What is the Minimum Order Quantity?

A: The Minimum Order Quantity is 10Pieces.