Samsung INR21700-48X 4800mAh 9.6A Li-ion Battery for E-Bikes, Flashlights & DIY Battery Packs (1-100 PCS)

The Samsung INR21700-48X 4800mAh 9.6A Continuous Discharge Li-ion Rechargeable Battery is an ultra-long cycle life 21700 cylindrical power cell engineered by Samsung SDI and supplied by DXF POWER with strict quality grading. Designed for applications requiring unprecedented longevity, this flat-top unprotected bare cell delivers a 4800mAh typical capacity (4650mAh minimum) on a 3.64V nominal platform with a dependable 9.6A (2C) continuous discharge rating. Featuring an extraordinary 3,000+ cycle life (retaining ≥70% capacity after 3,000 full cycles), the 48X is the ultimate long-term investment for electric bicycles (e-bikes), electric scooters, solar energy storage systems, robotics, LED flashlights, and custom DIY battery packs.

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Key Features

• Genuine Samsung SDI 48X Cell: Authentic Grade-A 21700 cylindrical cell engineered by Samsung SDI for exceptional durability and long service life
• Unmatched 3,000+ Cycle Life: Retains ≥70% of initial capacity even after 3,000 charge/discharge cycles under recommended cycling conditions
• 4800mAh High Capacity: Typical 4800mAh (4650mAh minimum) capacity ensures prolonged runtime and consistent energy output
• 9.6A Continuous Discharge: Delivers reliable 9.6A (2C) continuous current output for electric mobility and multi-cell pack applications
• Standard 21700 Bare Cell Format: Dimensions of Φ 21.15 ± 0.20 mm diameter × 70.65 ± 0.15 mm height with flat top terminals, optimized for spot welding
• CC-CV Charging Support: Charges reliably to 4.20V (or 4.10V to achieve maximum 3,000+ cycle life) with 0.33C (1,584mA) standard charging current
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece packages for single cell 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: Samsung SDI (Supplied by DXF POWER)
• Model / Part No.: INR21700-48X (48X, tube cell)
• Cell Type: 21700 Cylindrical Rechargeable Lithium-ion (Li-ion)
• Positive Pole: Flat (Flat Top)
• Protection Circuit: None (Unprotected industrial bare cell; requires compatible device-level or pack-level protection)
• Typical Discharge Capacity: 4800mAh (at 0.2C / 960mA discharge to 2.5V @ RT)
• Minimum Discharge Capacity: 4650mAh (1C = 4,800mA)
• Nominal Voltage: Typ. 3.64V
• Max. Charging Voltage: 4.2V (4.10V recommended for maximum 3,000-cycle life)
• Charging Method: CC-CV (constant voltage with limited current)
• Charging Current Rate: 0.33C (1,584mA)
• Discharge Cut-off Voltage: 2.5V (3.0V recommended for cycle life)
• Continuous Discharge Current: 9.6A (2C) continuous / 4.8A (1C) rated
• Cycle Life: Capacity ≥ 70% after 3,000 cycles (Charge: 1.0C / 4,800mA to 4.10V; Discharge: 1.0C / 4,800mA to 3.0V @ RT)
• Operating Temperature: Charge: 0°C to 50°C; Discharge: -30°C to 60°C
• Storage Temperature: 1 year: -20°C to 25°C; 3 months: -40°C to 45°C; 1 month: -40°C to 60°C
• Cell Dimensions: Diameter: Φ 21.15 ± 0.20 mm × Height: 70.65 ± 0.15 mm
• Cell Weight: 68.0 g ± 1.5 g
• Applications: Electric bicycles (e-bikes), electric scooters, high-lumen flashlights, robotics, solar energy storage systems, and custom DIY battery packs

Package Includes

• Samsung INR21700-48X 4800mAh 9.6A 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 – Quick Replacement & Testing: Single cell for flashlight upgrade, tool testing, or individual cell repair
• 10 PCS – Small Pack Rebuilds: Perfect for rebuilding portable power banks and handheld devices
• 20 PCS – Auxiliary & Mobility Modules: Ideal for 24V/36V auxiliary modules, robotics, and compact DIY power packs
• 50 PCS – Long-Life E-Bike & Scooter Battery Packs: Tailored for 3,000-cycle high-end 36V/48V electric bike packs and solar storage
• 100 PCS – Volume Pack Assembly: 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 (or 4.10V for extended 3,000-cycle longevity).
• Never charge above 4.20V per cell or discharge below 2.5V per cell.
• Charge within 0°C to 50°C; discharge within -30°C to 60°C.
• 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; special insulated battery cases are recommended.
• 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 Samsung SDI 48X cells with industry-benchmark 3,000-cycle longevity and 4800mAh capacity
• Tested continuous discharge performance and superior thermal 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 e-mobility builders, solar storage developers, DIY pack fabricators, and torch enthusiasts demanding reliable 4800mAh capacity, 9.6A continuous output, and extraordinary 3,000-cycle life for electric bikes, e-scooters, robotics, and custom energy storage modules.

Power your projects with trusted Samsung 21700 performance. Learn more about setups and battery care on the DXF YouTube channel.