MOLICEL 21700

The Molicel 21700 Series Cylindrical Lithium-Ion Bare Cell Lineup represents the pinnacle of high-drain, high-capacity cylindrical battery engineering from E-One Moli Energy. Renowned worldwide by battery pack builders, EV innovators, and power tool professionals, Molicel's 21700 platform combines exceptional continuous discharge ratings with ultra-low internal resistance and remarkable thermal stability. Featuring high-performance models including the flagship INR21700-P50B (5000mAh, 60A), benchmark INR21700-P45B (4500mAh, 45A), and proven workhorse INR21700-P42A (4200mAh, 45A), these authentic flat-top bare cells provide reliable 3.6V/3.7V nominal platforms engineered for heavy-drain, high-efficiency custom battery packs.

Key Features:

• Benchmark High-Drain Performance: Industry-leading continuous discharge capability up to 45A on P42A/P45B and an incredible 60A on the revolutionary P50B, delivering massive current under peak loads without voltage sag.
• Superior Energy Density & Capacity: High nominal capacity ratings from 4200mAh up to 5000mAh per cell, maximizing runtimes and volumetric energy storage in modern 21700 format.
• Ultra-Low Internal Resistance (IR): Advanced tab and electrode construction minimizes heat generation during rapid charge and high-amp discharge cycles, significantly extending pack operating life.
• Standard Flat Top Terminals: Unraised positive terminals precision-designed for reliable automated or manual resistance spot-welding with pure nickel strips.
• Rigorous Batch Uniformity: Factory-fresh Grade-A cells sorted for consistent voltage curves and matched internal resistance across multi-cell packaging tiers.
• Rapid Charge Capability: Engineered to support high-rate fast charging protocols under proper thermal monitoring and smart CC/CV charging systems.

Specifications & Model Lineup:

• Brand: Molicel (E-One Moli Energy Corp.)
• Cell Format: 21700 Cylindrical Bare Cell
• Positive Terminal: Flat Top (Bare, unprotected cell)
• Nominal Voltage: 3.6V – 3.7V per cell
• Maximum Charge Voltage: 4.20V ± 0.05V per cell
• Discharge Cut-off Voltage: 2.50V per cell
• Dimensions: Approx. 21.4 mm (Diameter) × 70.2 mm (Length)
• Protection Circuit: None (Unprotected bare cell)
• Popular Models in Collection:
  • INR21700-P50B: 5000mAh nominal capacity, 60A maximum continuous discharge current, flagship next-gen high-energy & ultra-high power cell.
  • INR21700-P45B: 4500mAh nominal capacity, 45A maximum continuous discharge current, state-of-the-art power cell with ultra-low AC IR (~7mΩ).
  • INR21700-P42A: 4200mAh nominal capacity, 45A maximum continuous discharge current, industry-standard reliable high-drain workhorse.

Package Options:

• 1 PCS: Single cell option for sampling, bench testing, calibration, or single-cell replacement needs.
• 10 PCS: Entry pack for compact DIY power modules, cordless tools, and portable power stations.
• 20 PCS: Ideal bundle for 10S2P lightweight e-scooter or 4S5P portable power bank builds.
• 50 PCS: Standard volume quantity for multi-series electric bicycle (e-bike) batteries and mid-sized energy storage systems.
• 100 PCS: Full factory case for commercial pack builders, fleet servicing, and high-capacity parallel battery banks with uniform factory batch IR.

Safety & Usage Restrictions (Important Bare-Cell Notice):

• Unprotected Bare Cell Warning: These are bare industrial cylindrical cells without built-in protection circuit boards (no integrated PCB/PCM).
• Professional Assembly Only: Strictly intended for qualified pack builders and technicians who integrate an appropriate Battery Management System (BMS) with overcharge, over-discharge, over-current, short-circuit, and cell thermal protection.
• Never Carry Loose Cells: Do not carry loose cells in pockets, bags, or toolboxes where contact with keys, coins, or metal objects can cause catastrophic short circuits. Always store in non-conductive plastic battery cases.
• Prohibited Consumer Uses: Not for loose consumer use in flashlights, vaping devices/e-cigarettes, or household appliances lacking dedicated cell containment and BMS protection.
• Charging Protocol: Charge exclusively using dedicated CC/CV lithium-ion smart chargers. Never exceed 4.20V per cell and never leave charging batteries unattended.
• Pre-Weld Inspection: Verify equal cell voltages and inspect outer shrink-wrap insulation prior to resistance spot-welding. Never solder directly onto cell terminals with a soldering iron.

Recommended Applications:

• High-Drain Cordless Power Tools, Vacuums, and Lawn Equipment
• Electric Bicycles (E-Bikes), Electric Scooters, and Light Electric Vehicles (LEVs)
• Custom DIY Multi-Series/Parallel Lithium-Ion Battery Packs
• Long-Range FPV Drones and High-Endurance UAV Power Packs
• Off-Grid Solar Energy Storage Systems (ESS) and Portable Backup Power Units
• Robotics, Automated Guided Vehicles (AGV), and High-Current Industrial Gear

Why Choose DXF:

DXF POWER delivers 100% authentic Grade-A cylindrical cells sourced through verified tier-one channels, rigorously checked for internal resistance and voltage consistency, and packed in secure industrial-grade packaging for reliable global delivery.