Molicel INR21700-P45B 4500mAh 45A Li-ion Battery for Power Tools, E-Bikes & DIY Battery Packs (1-100 PCS)

The Molicel INR21700-P45B 4500mAh 45A Continuous Discharge 21700 Li-ion Rechargeable Battery is an industry-redefining next-generation power cell manufactured by E-One Moli Energy (Molicel) and supplied by DXF POWER with strict quality grading. Featuring 7% higher capacity and 22% lower DC resistance than the renowned P42A, this flat-top bare cell delivers 4500mAh typical capacity (16.2Wh) on a 3.6V nominal platform with an impressive 45A maximum continuous discharge rating (up to 120W continuous per cell) and an ultra-low typical impedance of only 7 mΩ (AC 1kHz). With enhanced 3C / 13.5A fast charging capability, superior in-cell thermal control, and a wide operating temperature range from -40°C to 60°C, the P45B is the premier choice for hyper-performance electric vehicles, eVTOL aircraft, micro-mobility, heavy-duty cordless power tools, and custom DIY battery packs.

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Key Features

• Genuine Molicel INR21700-P45B Cell: Next-generation Grade-A 21700 cell by E-One Moli Energy featuring 22% lower DC internal resistance and 7% higher capacity than P42A
• 4500mAh High Capacity: Delivers 4500mAh typical capacity (16.2Wh) with high energy density (643 Wh/L, 242 Wh/kg) for extended operational runtimes
• 45A Constant Continuous Discharge: Unyielding 45A continuous discharge performance delivering up to 120W sustained power per cell without thermal throttling
• Ultra-Low Impedance (≤13.8 mΩ DCIR): Typical AC impedance of 7 mΩ at 1kHz; ensures minimal heat generation and maximum voltage retention under load
• Superior 3C Fast Charging: High-speed 13.5A continuous charging capability allows a standard full recharge in just 1.5 hours
• Optimized Thermal Management: Advanced internal cell construction reduces core temperature variance by 3–4°C for enhanced longevity (500+ cycles at 80% retention)
• Standard 21700 Flat-Top Design: Max. 21.6 mm diameter × 70.2 mm height and ~69 g weight, ideal for precision spot welding and pack fabrication
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece packages for individual replacements or large-scale pack fabrication
• Strict Factory Quality Testing: Cells are inspected for voltage balance, internal resistance, and capacity consistency across every batch

Specifications, Per Battery

• Brand / Manufacturer: Molicel (E-One Moli Energy / Supplied by DXF POWER)
• Model / Part No.: INR-21700-P45B (P45B)
• Cell Format: 21700 Cylindrical Rechargeable Lithium-ion (INR)
• Positive Pole: Flat (Flat Top)
• Can Material: Steel
• Protection Circuit: Without (Unprotected industrial bare cell; requires compatible BMS / protection circuit)
• Typical Capacity: 4500mAh (16.2Wh)
• Nominal Voltage: 3.6V
• Maximum Charge Voltage: 4.2V
• Discharge Cut-Off Voltage: 2.5V
• Max. Continuous Discharge Current: 45A (with 45°C cut-off, up to 120W continuous)
• Fast Charge Current: 13.5A continuous charge (up to 3C rate)
• Standard Charging Time: 1.5 hours
• Typical Impedance (AC 1kHz, 30% SOC): 7 mΩ
• Typical Impedance (DC, 50% SOC): 15 mΩ (Max. DCIR ≤ 13.8 mΩ)
• Energy Density: 643 Wh/L (Volumetric) / 242 Wh/kg (Gravimetric)
• Operating Temperature: Charge: 0°C to 60°C / Discharge: -40°C to 60°C
• Cycle Life: 500+ cycles at high-rate discharge (80% capacity retention)
• Cell Dimensions: Max. Diameter: 21.6 mm × Max. Height: 70.2 mm
• Cell Weight: Max. 69.0 g
• Applications: Electric vehicles (EV), eVTOL aircraft, micro-mobility, electric bikes & scooters (e-bikes), heavy-duty power tools, and custom DIY lithium projects

Package Includes

• Molicel INR21700-P45B 4500mAh 45A battery cells, quantity chosen from 1, 10, 20, 50, or 100 PCS
• Protective packaging / cell box
• User manual and battery safety guide

Choose Your Ideal Power Bundle

• 1 PCS – Single Cell Replacement: Quick replacement for high-drain torches, individual test benches, or handheld tools
• 10 PCS – Portable High-Drain Modules: Ideal for high-output dive lights, drone gear, and compact robotics
• 20 PCS – High-Power Mobile Modules: Perfect for 18V/24V cordless power tool battery rebuilds and portable power modules
• 50 PCS – E-Bike & Scooter Battery Packs: Optimized quantity for assembling high-current 36V/48V light electric vehicle packs
• 100 PCS – Volume Assembly Bulk Set: Best value for workshops, battery rebuilders, and custom pack manufacturers

Purchasing in bundles ensures matched cell batches for balanced series and parallel assembly.

180-Day Warranty & Customer Support

Every cell batch supplied by DXF POWER is covered by a 180-day manufacturer warranty against defects in materials and craftsmanship. Our technical support team is always available to assist with charging parameters, pack layout recommendations, and safety practices.

Usage & Safety Guidelines

• Use a dedicated lithium-ion smart charger supporting CC/CV charging mode up to 4.20V.
• Never charge above 4.25V per cell or discharge below 2.50V per cell.
• Never exceed the maximum continuous discharge current of 45A.
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if damaged.
• Never carry loose 21700 batteries in pockets, bags, or purses with metal objects like keys or coins; practical storage in an insulated battery case is essential.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water.
• Store batteries at 3.60V–3.85V per cell in a cool, dry, well-ventilated location away from direct sunlight.
• When building multi-cell packs, always integrate a quality Battery Management System (BMS) with over-current, over-charge, over-discharge, and thermal balance protection.

Why Choose DXF?

• Genuine Grade-A Molicel INR21700-P45B cells with authentic 4500mAh capacity and 45A continuous output
• Industry-leading 7 mΩ AC impedance and ultra-fast 13.5A (3C) charging capability
• Carefully matched batches for balanced series and parallel pack assembly
• Strict factory pre-shipment quality checks and secure protective packaging
• Global warehouse logistics network and professional technical customer support

Perfect For

Engineered for e-bike builders, eVTOL developers, power tool rebuilders, and DIY pack fabricators demanding high 4500mAh capacity and 45A continuous discharge with ultra-low internal resistance for next-generation electric mobility, heavy-duty cordless equipment, and custom energy modules.

Power your projects with trusted Molicel performance. Learn more about setups and battery care on the DXF YouTube channel.