18650&21700 BATTERY

Grade-A Factory Fresh Bare Cells • High-Drain & High-Capacity • Tracked Worldwide Air Shipping

The DXF 18650 & 21700 Cylindrical Lithium-Ion Bare Cell Collection provides authentic, factory-fresh, Grade-A cylindrical cells selected from top global manufacturers including EVE, Samsung SDI, LG Energy Solution, Panasonic, and Molicel. Engineered for custom battery pack builders, electrical engineers, and commercial pack assemblers, this collection offers an extensive range of high-drain power cells (up to 30A continuous) and ultra-high-capacity energy cells (up to 5500mAh per cell) with standard flat-top terminals.

Available in flexible professional order quantities from 1 to 100 PCS tiers (1, 10, 20, 50, 100 PCS bundles). Every cell batch is voltage-matched, internal-resistance (IR) binned, and cycle-tested, ensuring consistent pack balancing and maximum cycle durability across custom high-power builds.

🌍 Direct Factory Global Air Shipping

Shipped directly from our manufacturing and battery distribution center in China. Every cell is stored at optimal factory storage voltage and shipped with secure, compliant terminal insulation packaging. Fast, tracked air shipping is available across all major global destinations.

👉 Check Global Shipping Rates & Delivery Transit Times

Why Source Cylindrical Bare Cells from DXF?

• 🔬 100% Authentic Grade-A Cell Chemistry: Sourced through authorized tier-one supply channels. Every cell delivers its verified nominal capacity, precise internal resistance, and factory discharge curve.
• ⚡ Clear Discharge Current Distinction: We strictly specify both Maximum Continuous Discharge Current and Burst Discharge Rating to ensure safe thermal management in custom battery configurations.
• 📐 Standard Flat-Top Terminals: Optimized for nickel-strip spot welding, laser welding, and high-density modular pack assembly into custom 18650 and 21700 configurations.
• 🔄 Strict Voltage & IR Matching: Multi-cell order tiers (10, 20, 50, 100 PCS) are pre-sorted and batch-matched for uniform internal resistance, eliminating cell drift and prolonging overall pack service life.
• 📦 Tiered Quantity Savings (1–100 PCS): Choose from sample 1 PCS evaluations to bulk 10, 20, 50, or 100 PCS production quantities with progressive wholesale pricing.

Popular Cell Form Factors & Models

• 18650 Series (18mm × 65mm):
  • Samsung 30Q (3000mAh, 15A Continuous): Benchmark high-drain cell for power tools and performance packs.
  • Samsung 35E / Panasonic NCR18650GA (3500mAh, 8A–10A Continuous): Maximum capacity 18650 cells for e-bikes and energy storage.
  • Samsung 20R / LG HE2 (2000mAh–2500mAh, 20A Continuous): High-amperage output cells for heavy-draw industrial applications.
• 21700 Series (21mm × 70mm):
  • EVE 50PL (5000mAh, 125A Burst / High Continuous): Extreme power density for aggressive drone packs and high-power applications.
  • Samsung 58E / LG M50 (5000mAh–5500mAh, 10A–15A Continuous): Premier energy density cells for long-range e-bikes and off-grid power walls.

Recommended Applications

• Custom E-Bike, E-Scooter, and Light Electric Vehicle (LEV) Battery Packs
• High-Drain Cordless Industrial Power Tools & Gardening Equipment
• Off-Grid Solar Energy Storage Systems (ESS) & Home Power Walls
• Long-Range FPV Drone Li-Ion Flight Packs (High-Energy Endurance Builds)
• Robotics, Autonomous Ground Vehicles (AGVs) & Marine Battery Systems
• Portable Power Stations & Emergency Backup Units

Package Tier Options

• 1 PCS: Single sample cell for prototyping, bench testing, and fitment checks.
• 10 PCS: Compact bundle for small 2S-4S packs or module replacements.
• 20 PCS / 50 PCS: Ideal quantities for complete e-bike batteries, power tool packs, and intermediate DIY builds.
• 100 PCS: Full wholesale carton for commercial builders, repair centers, and large-scale energy storage arrays.

⚠️ Professional Safety Disclaimer & Usage Restrictions

• Unprotected Bare Cells: These are bare industrial cylindrical cells without built-in protection circuits (no integrated PCB/BMS). They are strictly intended for professional integration into battery packs equipped with an appropriate Battery Management System (BMS) or Protection Circuit Module (PCM).
• Required Protection: Pack assemblies must include proper cell balancing, overcharge protection (max 4.20V), over-discharge cutoff (min 2.50V), short-circuit protection, temperature sensors, and adequate insulating barriers.
• Prohibited Uses: Do NOT carry loose cells in pockets, bags, or purses with metal objects. Do NOT use in consumer electronic devices designed without internal protective management, e-cigarettes, or vaporizers.
• Always use specialized lithium-ion microprocessor chargers and flame-retardant storage containers.

Watch official testing, flight demonstrations, and bench reviews on the DXF Official YouTube Channel.