EVE INR21700-50E 5000mAh 15A Li-ion Battery for E-Bikes, Scooters & DIY Battery Packs (1-100 PCS)

The EVE INR21700-50E 5000mAh 15A Continuous Discharge 21700 Li-ion Rechargeable Battery is an exceptional high-energy-density cylindrical bare cell manufactured by EVE Energy and supplied by DXF POWER with strict quality grading. Optimized for extended-range light electric vehicles and high-capacity energy storage, this flat-top bare cell delivers a robust 5000mAh (5.0Ah / 18.25Wh) nominal capacity on a 3.65V nominal platform with a dependable 15A maximum continuous discharge rating. Boasting an impressive gravimetric energy density of 257 Wh/kg, a nickel-based cathode paired with a graphite anode, and proven thermal stability, the EVE 50E is the preferred industry standard for electric bicycles, electric scooters, lightweight motorcycles, backup power banks, and custom DIY battery packs.

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Key Features

• Genuine EVE INR21700-50E Cell: Authentic Grade-A 21700 cylindrical bare cell manufactured by global tier-one battery producer EVE Energy
• 5000mAh High-Density Capacity: Full 5.0Ah (18.25Wh) capacity delivers maximum endurance and range for light electric vehicles and portable equipment
• 15A Continuous Discharge: Dependable 15A continuous discharge current capability supports steady power demands without excessive heat generation
• Superior Energy Density (257 Wh/kg): Advanced nickel-based cathode and graphite anode chemistry ensures high volumetric efficiency and lightweight battery packs
• Stable 3.65V Platform: Reliable CC-CV charging profile up to 4.20V with standard 2.50V discharge cut-off
• Standard 21700 Flat-Top Design: Cylindrical dimensions of ~21.2 mm diameter × ~70.5 mm length and ~71 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: EVE Energy (Supplied by DXF POWER)
• Model / Part No.: INR21700-50E (50E)
• Cell Format: 21700 Cylindrical Rechargeable Lithium-ion (Li-ion)
• Positive Pole: Flat (Flat Top)
• Protection Circuit: Without (Unprotected industrial bare cell; requires compatible BMS / protection circuit)
• Nominal Capacity: 5000mAh (5.0Ah)
• Energy Capacity: 18.25 Wh
• Nominal Voltage: 3.65V
• Charging Voltage: 4.20V
• Discharging Cut-Off Voltage: 2.50V
• Max Continuous Discharge Current: 15A continuous (approx. 3C)
• Gravimetric Energy Density: Approx. 257 Wh/kg
• Gravimetric Power Density: Approx. 771 W/kg
• Positive Electrode (Cathode): Nickel-based (Ni-based)
• Negative Electrode (Anode): Graphite
• Charging Method: Constant Current / Constant Voltage (CC-CV)
• Cell Dimensions: Cylindrical 21700 (Volume: approx. 24.93 cm³)
• Cell Weight: Approx. 71 g
• Country of Origin: China
• Applications: Electric bicycles (e-bikes), electric scooters, light electric motorcycles, portable power stations, energy storage systems, and custom DIY battery packs

Package Includes

• EVE INR21700-50E 5000mAh 15A 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 – Compact Device Modules: Ideal for portable power banks, camping gear, and handheld equipment
• 20 PCS – High-Capacity Modules: Perfect for small energy storage systems, robotics, and auxiliary power units
• 50 PCS – E-Bike & Scooter Battery Packs: Optimized quantity for assembling long-range 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 15A.
• 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 EVE INR21700-50E cells with authentic 5000mAh capacity and 15A continuous output
• High-energy-density chemistry (257 Wh/kg) with stable voltage retention and excellent cycle endurance
• 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 light electric vehicle builders, scooter mechanics, and DIY pack fabricators demanding maximum 5000mAh capacity, 257 Wh/kg energy density, and reliable 15A continuous discharge for extended range and long cycle life.

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