DMEGC INR21700-45E 4500mAh 9A Li-ion Battery for EVs, Power Tools & DIY Battery Packs (1-100 PCS)

The DMEGC INR21700-45E 4500mAh 9A Continuous Discharge 21700 Li-ion Rechargeable Battery is a high-performance cylindrical power cell manufactured by DMEGC and supplied by DXF POWER with strict quality grading. Designed for extended operating endurance and reliable power delivery, this flat-top bare cell features a generous 4500mAh nominal capacity (4400mAh minimum) on a 3.7V nominal platform with a dependable 2C (9.0A) maximum continuous discharge rating and over 1,000 cycle life (80% DOD). Known for low internal resistance, stable thermal performance, and eco-friendly construction, the DMEGC 45E is an ideal choice for electric vehicles (EVs), light electric mobility, cordless power tools, energy storage systems, and custom DIY battery packs.

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Key Features

• Genuine DMEGC INR21700-45E Cell: Authentic Grade-A 21700 cylindrical power cell manufactured by leading producer DMEGC
• 4500mAh High Capacity: Substantial 4500mAh nominal capacity (4400mAh minimum) provides long-lasting runtimes across portable devices and high-capacity modules
• 9.0A (2C) Continuous Discharge Output: Stable 9.0A continuous discharge capability supports steady power demands with low thermal generation
• Extended Cycle Life: Engineered for over 1,000 charge cycles at 80% DOD, ensuring exceptional durability and cost efficiency
• Fast 1C Charging: Supports up to 1C (4.5A) charge current for fast turnaround times
• Low Internal Resistance: Low IR profile ensures efficient power transfer and minimal voltage sag under load
• Standard 21700 Flat-Top Design: 21 mm diameter × 70 mm height and ~70 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: DMEGC (Supplied by DXF POWER)
• Model / Part No.: INR21700-45E (21700-45E)
• Cell Format: 21700 Cylindrical Rechargeable Lithium-ion (Li-ion)
• Cell Chemistry: INR (Lithium Nickel Manganese Cobalt Oxide)
• Positive Terminal: Flat (Flat Top)
• Protection Circuit: Without (Unprotected industrial bare cell; requires compatible BMS / protection circuit)
• Nominal Capacity: 4500mAh
• Minimum Capacity: 4400mAh
• Nominal Voltage: 3.7V
• Charge Voltage: 4.2V ± 0.05V
• Discharge Cut-Off Voltage: 2.50V
• Maximum Continuous Discharge Current: 2C (9.0A continuous)
• Maximum Charge Current: 1C (4.5A CC-CV)
• Cycle Life: >1,000 cycles (80% DOD)
• Charging Method: Constant Current / Constant Voltage (CC-CV)
• Rechargeable: Yes
• Cell Dimensions: Diameter: 21 mm × Height: 70 mm
• Cell Weight: Approx. 70 g
• Applications: Electric vehicles (EVs), electric bikes/scooters, cordless power tools, portable electronics, energy storage systems, and custom DIY battery packs

Package Includes

• DMEGC INR21700-45E 4500mAh 9A 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 Light & Device Packs: Ideal for high-lumen multi-cell torches, camping lanterns, and small electronics
• 20 PCS – Compact Energy Modules: Perfect for small portable power banks, robotics, and auxiliary power supplies
• 50 PCS – EV & E-Bike Battery Rebuilds: Sized for assembling and refurbishing standard 36V/48V light electric vehicle packs
• 100 PCS – Master Builder Bulk Set: Best value for workshops, custom pack assemblers, and volume battery builders

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 9.0A.
• 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 DMEGC INR21700-45E cells with authentic 4500mAh capacity and 9A continuous output
• High-energy-density chemistry with long 1,000+ cycle life and stable voltage plateau
• 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 EV builders, power tool technicians, and DIY pack fabricators demanding dependable 4500mAh capacity, steady 9A continuous discharge, and over 1,000 cycle endurance for electric mobility, energy storage, and custom power assemblies.

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