The Samsung INR18650-20R 2000mAh 20A Continuous Discharge Li-ion Rechargeable Battery is an industrial-grade, high-drain power cell designed specifically for high current loading applications. With a nominal voltage of 3.6V and a capacity of 2000mAh, this flat top cylindrical cell is engineered for devices that demand reliable, instant power delivery under intense load conditions. Commonly utilized in industrial applications including power tools, light electric vehicles, and custom-built energy storage systems, the INR18650-20R delivers robust performance, exceptional thermal tolerance up to 75°C, and consistent 20A continuous discharge current.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 20R Cell: Authentic Grade-A cylindrical lithium-ion cell built for high-drain performance and outstanding structural reliability
• 20A Continuous Discharge: Delivers up to 20A continuous output without excessive voltage sag, tailored for high-load industrial tools and electric mobility
• High-Rate Fast Charging: Supports up to 4000mA (4A) rapid charging current for minimized downtime between operations
• Wide Thermal Range: Reliable operation in extreme environments with a operating temperature range from -20°C up to +75°C
• Standard 18650 Flat-Top Design: Standard 18.5 × 65.0mm form factor with flat top positive terminal, perfect for spot-welded packs, battery sleds, and custom modular arrays
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece bundles for single repairs or volume pack manufacturing
• Strict Factory Quality Testing: Cells are inspected for voltage uniformity, low internal resistance, and matched capacity across every batch

Specifications, Per Battery

• Brand / Manufacturer: Samsung SDI (Supplied by DXF POWER)
• Model / Type: INR18650-20R (20R)
• Chemistry: Lithium-ion (Li-ion)
• Battery Size / Form Factor: 18650 Flat Top
• Positive Terminal: Flat Top
• Nominal Capacity: 2000mAh
• Continuous Discharge Current (Max): 20A
• Nominal Voltage: 3.6V
• Maximum Charge Voltage: 4.2V
• Discharge Cut-Off Voltage: 2.5V
• Maximum Charge Current: 4000mA (4A)
• Operating Temperature: -20°C to +75°C
• Protected: No (Unprotected industrial cell)
• Rechargeable: Yes
• Dimensions (Ø × H): Approximately 18.5mm (Diameter) × 65.0mm (Length)
• Weight (Per Battery): Approximately 45.0g
• Applications: Cordless power tools, electric vehicles/scooters, high-drain RC models, industrial equipment, robotics, and custom DIY battery packs

Package Includes

• Samsung INR18650-20R 2000mAh 20A 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 tool battery replacement or benchmark testing
• 10 PCS – Small Tool Rebuilds: Perfect for rebuilding cordless drill and driver battery packs
• 20 PCS – High-Output Modules: Ideal for 36V or 48V auxiliary modules, high-load robotics, and DIY power packs
• 50 PCS – Heavy-Duty Packs: Tailored for electric mobility modules, lawn equipment packs, and high-discharge portable power
• 100 PCS – Master Builder Bulk Set: Best value for repair shops, commercial fabricators, and custom battery assemblers

Buying in bundles guarantees matched batch consistency for safe series and parallel cell configurations.

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. Customer support is readily available for guidance on cell compatibility, charging parameters, and pack assembly precautions.

Usage & Safety Guidelines

• Use a dedicated lithium-ion smart charger supporting CC/CV charging mode.
• Never charge above 4.20V per cell or discharge below 2.50V per cell.
• Do not exceed the maximum charging current of 4000mA (4A).
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if torn.
• Never carry loose 18650 batteries in pockets, bags, or purses with metal objects like keys or coins; always store in an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water, and avoid temperatures exceeding 75°C.
• 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-charge, over-discharge, and balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 20R cells with true 2000mAh high-drain performance
• Reliable 20A continuous discharge current under heavy operational loads
• Carefully matched batches for balanced series and parallel pack assembly
• Strict factory pre-shipment quality checks and secure shipping packaging
• Global warehouse logistics network and professional technical customer support

Perfect For

Engineered for contractors, technicians, DIY pack builders, and RC/EV enthusiasts who need dependable 20A continuous high-drain power for cordless tools, electric transport, robotics, and custom high-load battery modules.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.

The Samsung INR18650-35E 3500mAh 8A Continuous Discharge Li-ion Rechargeable Battery provides ultra-high energy density, long cycle longevity, and exceptional runtime for endurance applications. Engineered by Samsung SDI and supplied by DXF POWER with stringent quality grading, this 18650 flat-top cell delivers a true 3500mAh nominal capacity at a consistent 3.6V platform (4.20V max charge) with an 8A continuous discharge rating. It is the premier choice for custom high-capacity battery packs, electric bicycles (e-bikes), scooters, high-lumen flashlights, portable power banks, and IoT/robotics electronics requiring maximum operational runtime.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 35E Cell: Authentic Grade-A cylindrical lithium-ion cell recognized worldwide for class-leading 3500mAh energy density and stable discharge characteristics
• 3500mAh Ultra-High Capacity: Maximum runtime per cell, making it ideal for multi-cell pack designs where space and weight efficiency are essential
• 8A Continuous Discharge: Dependable 8A continuous output optimized for steady, long-duration power draw without thermal overheating
• Standard 18650 Flat-Top Design: Industry-standard dimensions (18.5 × 65.0mm) for spot-welding nickel strips, battery sleds, and custom modular enclosures
• Multiple Pack Quantities: Available in 1, 10, 20, 50, and 100 piece bundles to meet single-cell replacements or high-capacity pack manufacturing
• Strict Quality Grading: Pre-screened for matched cell voltage, internal resistance, and capacity uniformity across every batch

Specifications, Per Battery

• Brand: Samsung SDI (Supplied by DXF POWER)
• Model: INR18650-35E (35E)
• Cell Type: Cylindrical Rechargeable Lithium-ion (Li-ion)
• Form Factor: 18650 Flat Top
• Nominal Capacity: 3500mAh (0.2C discharge, 2.65V cut-off)
• Minimum Capacity: 3350mAh
• Nominal Voltage: 3.6V – 3.7V
• Full Charge Voltage: 4.20V ± 0.05V
• Discharge Cut-Off Voltage: 2.65V (recommended 3.0V for extended cycle life)
• Continuous Discharge Current: 8A
• Standard Charge Current: 1.7A (0.5C)
• Maximum Charge Current: 2.0A
• Dimensions: Approximately 18.55mm (Diameter) × 65.25mm (Length)
• Weight: Approximately 48.0g – 50.0g
• Applications: Electric bicycles (e-bikes), electric scooters, high-lumen LED flashlights, portable power stations, DIY battery pack fabrication, power tools, and robotics

Package Includes

• Samsung INR18650-35E 3500mAh 8A 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 testing, flashlight replacement, or individual device repair
• 10 PCS – Compact Pack Builds: Perfect for small portable power banks, headlamps, and compact 3S/4S hobby packs
• 20 PCS – Medium Pack Fabrication: Ideal for 36V or 48V auxiliary modules, robotics, and medium-scale DIY battery builds
• 50 PCS – High-Capacity Energy Modules: Tailored for electric bike battery packs, e-scooters, and solar storage modules
• 100 PCS – Master Builder Bulk Set: Best unit value for serious pack builders, workshops, and commercial battery fabrication

Ordering in bundles guarantees matched batch consistency for safe series and parallel cell configurations.

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 answer questions regarding pack design, BMS integration, and safe battery handling.

Usage & Safety Guidelines

• Use a dedicated lithium-ion smart charger supporting CC/CV charging profile.
• Never charge above 4.20V per cell or discharge below 2.65V per cell.
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if torn.
• Never carry loose 18650 batteries in pockets, bags, or purses with metal objects like keys or coins; always store in an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water, and avoid temperatures exceeding 60°C (140°F).
• 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-charge, over-discharge, and balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 35E cells with true 3500mAh capacity
• Consistent 8A continuous discharge performance optimized for high-endurance applications
• Carefully matched batches for balanced series and parallel pack assembly
• Strict factory pre-shipment quality checks and secure shipping packaging
• Global warehouse logistics network and professional technical customer support

Perfect For

Engineered for pack assemblers, DIY hobbyists, e-bike/e-scooter builders, and technicians who demand industry-leading 3500mAh capacity and reliable 8A continuous discharge for long-endurance portable energy projects.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.

The Samsung INR18650-30Q 3000mAh 15A Continuous Discharge Li-ion Rechargeable Battery delivers outstanding energy density, reliable continuous power, and low internal resistance for power-demanding applications. Engineered by Samsung SDI and supplied by DXF POWER with strict quality grading, this 18650 flat-top cell is widely recognized for its consistent 3.6V nominal platform (4.20V max charge), delivering up to 15A continuous current. It is ideal for custom RC battery packs, FPV ground stations, DIY e-bikes, power tools, high-output flashlights, and robotics projects.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 30Q Cell: Premium Grade-A cylindrical lithium-ion cell known for exceptional consistency and cycle life
• 3000mAh High Capacity: Extended runtime and high energy density across ground, aerial, and portable electronics
• 15A Continuous Discharge: Reliable 15A continuous output without excessive voltage sag or heat buildup
• Standard 18650 Flat-Top Design: Industry-standard dimensions (18.5 × 65.0mm) for seamless fit in battery holders, sleds, and spot-welded packs
• Multiple Pack Quantities: Available in 1, 10, 20, 50, and 100 piece bundles for single replacements or bulk pack fabrication
• Strict Factory Quality Testing: Cells are tested for voltage uniformity, low internal resistance, and matched capacity

Specifications, Per Battery

• Brand: Samsung SDI (Supplied by DXF POWER)
• Model: INR18650-30Q (30Q)
• Cell Type: Cylindrical Rechargeable Lithium-ion (Li-ion)
• Form Factor: 18650 Flat Top
• Nominal Capacity: 3000mAh (0.2C discharge)
• Nominal Voltage: 3.6V – 3.7V
• Full Charge Voltage: 4.20V ± 0.05V
• Discharge Cut-Off Voltage: 2.50V (recommended 3.0V for extended cycle life)
• Continuous Discharge Current: 15A
• Standard Charge Current: 1.5A (0.5C)
• Dimensions: Approximately 18.5mm (Diameter) × 65.0mm (Length)
• Weight: Approximately 48.4g
• Applications: Custom DIY RC battery packs, FPV ground power, electric bikes, scooters, power tools, high-lumen flashlights, robotics, and portable power stations

Package Includes

• Samsung INR18650-30Q 3000mAh 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 – Quick Replacement & Testing: Single cell for device replacement or benchmark testing
• 10 PCS – Small Pack Rebuilds: Ideal for compact DIY battery packs, flashlight sets, or tool battery repacking
• 20 PCS – Multi-Cell Configurations: Great for 3S–6S multi-parallel RC, drone, or robotics battery builds
• 50 PCS – High-Capacity Modules: Ideal for e-bike modules, scooter packs, and DIY solar power banks
• 100 PCS – Master Builder Bulk Set: Maximum volume savings for commercial assemblers, clubs, and large-scale pack builders

Buying in bundles ensures matched cell batches for balanced series and parallel pack builds.

180-Day Warranty & Customer Support

Every cell batch supplied by DXF POWER is backed by a 180-day manufacturer warranty against defects in materials and workmanship. Customer support is readily available for guidance on cell compatibility, charging parameters, and pack assembly precautions.

Usage & Safety Guidelines

• Use a dedicated lithium-ion smart charger supporting CC/CV charging mode.
• Never charge above 4.20V per cell or discharge below 2.50V per cell.
• Always inspect cell outer wrap, insulator ring, and terminals for damage before use; rewrap if torn.
• Never carry loose 18650 batteries in pockets or bags with keys, coins, or metal objects; always use an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge batteries in water or expose them to temperatures above 60°C (140°F).
• Store batteries at 3.60V–3.85V per cell in a cool, dry, ventilated location away from direct sunlight.
• When building multi-cell packs, always use a proper Battery Management System (BMS) with balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 30Q cells with consistent internal resistance and capacity
• Reliable 15A continuous discharge performance and 3000mAh real capacity
• Careful batch matching for reliable multi-cell pack construction
• Strict pre-shipment quality inspection and secure packaging
• Global warehouse logistics and responsive technical customer support

Perfect For

Engineered for DIY builders, RC enthusiasts, drone pilots, and technicians looking for dependable continuous 15A 18650 power for custom battery packs, electric transport, robotics, cordless tools, and high-output LED illumination.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.

The Samsung ICR18650-30B 3000mAh 6A Continuous Discharge Li-ion Rechargeable Battery delivers high capacity, stable voltage output, and dependable cycle longevity for everyday electronic devices. Manufactured by Samsung SDI and supplied by DXF POWER with strict quality grading, this 18650 flat-top cell provides a true 3000mAh nominal capacity (at 1C discharge) on a stable 3.7V platform with a 2C (6A) continuous discharge rating. It is an excellent power choice for LED flashlights, power banks, emergency illumination, portable audio gear, and custom multi-cell DIY battery builds.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 30B Cell: Authentic Grade-A cylindrical lithium-ion cell manufactured by Samsung SDI, offering consistent performance and long service life
• 3000mAh High Capacity: Delivers extended runtimes at 1C discharge, ideal for high-endurance lighting and portable energy devices
• 6A (2C) Continuous Discharge: Safe, steady continuous power output engineered for low-to-medium drain electronics without thermal overheating
• High Charge Capability: Supports up to 5C maximum charging current with a standard 1C charge profile
• Standard 18650 Flat-Top Design: Standard 18mm × 65mm form factor with flat top positive terminal, ideal for battery holders, spot welding, and modular battery sleds
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece packages to suit single replacements or bulk pack fabrication
• Strict Quality Grading: Pre-screened for matched internal resistance, voltage balance, and uniform capacity across every batch

Specifications, Per Battery

• Brand / Manufacturer: Samsung SDI (Supplied by DXF POWER)
• Product Model: ICR18650-30B (30B)
• Cell Type: Cylindrical Rechargeable Lithium-ion (Li-ion)
• Size / Form Factor: 18650 Flat Top
• Nominal Capacity: 3000mAh @ 1C Discharge
• Nominal Voltage: 3.7V
• Charge Cut-Off Voltage: 4.2V
• Discharge Cut-Off Voltage: 2.7V
• Standard Charge Current: 1C (approx. 3.0 hours standard charge)
• Max Charge Current: 5C
• Max Continuous Discharge Current: 2C (6A) (Cell skin temperature cannot exceed 85°C)
• Operating Temperature (Charging): 0°C ~ 45°C
• Operating Temperature (Discharging): -20°C ~ 60°C (Cell skin temperature cannot exceed 70°C)
• Storage Temperature: -10°C ~ +35°C (Humidity 65% ± 20% RH, recommended 23 ± 5°C for long-term storage)
• Dimensions: Approximately 18mm (Diameter) × 65mm (Length)
• Cell Weight: Approximately 50g
• Applications: High-output LED flashlights, power banks, emergency lighting, portable consumer electronics, and custom DIY battery packs

Package Includes

• Samsung ICR18650-30B 3000mAh 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 repair, device testing, or single-cell replacement
• 10 PCS – Small Rebuilds & Power Banks: Ideal for compact power bank rebuilds, multi-cell torches, and hobby electronics
• 20 PCS – Medium Pack Builds: Suitable for small solar storage banks, portable lighting arrays, and DIY equipment
• 50 PCS – High-Capacity Modular Packs: Great for larger energy storage modules and commercial maintenance spares
• 100 PCS – Master Builder Bulk Set: Best value for workshops, custom pack assemblers, and volume electronics 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.
• Never charge above 4.2V per cell or discharge below 2.7V per cell.
• Ensure cell skin temperature does not exceed 70°C during discharge (absolute max 85°C).
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if damaged.
• Never carry loose 18650 batteries in pockets, bags, or purses with metal objects like keys or coins; always store in an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water, and avoid temperatures exceeding 60°C.
• 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-charge, over-discharge, and balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 30B cells with consistent internal resistance and true 3000mAh capacity
• Safe and stable 6A (2C) continuous discharge rating optimized for long lifespan and steady power
• Carefully matched batches for balanced series and parallel pack assembly
• Strict pre-shipment quality inspection and secure protective packaging
• Global warehouse logistics network and responsive technical customer support

Perfect For

Engineered for DIY builders, technicians, and electronics enthusiasts looking for high-capacity 3000mAh 18650 power with dependable 6A continuous output for lighting, backup power, portable electronics, and modular pack projects.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.

The Samsung ICR18650-26J 2600mAh 5.2A Continuous Discharge Li-ion Rechargeable Battery provides dependable energy density, long cycle life, and stable voltage output for low-to-medium drain electronics. Manufactured by Samsung SDI and supplied by DXF POWER with strict quality grading, this authentic 18650 flat-top cell delivers a reliable 2600mAh nominal capacity at 3.6V (4.2V max charge) with a 5.2A maximum continuous discharge rating. It is an industry standard cell ideal for high-intensity LED flashlights, power banks, emergency lighting, laptop battery pack rebuilding, and custom DIY battery builds.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 26J Cell: Authentic Grade-A cylindrical lithium-ion cell manufactured by Samsung SDI, known for outstanding consistency and proven longevity
• 2600mAh Nominal Capacity: Reliable energy storage providing long runtime for everyday portable electronics and backup equipment
• 5.2A Continuous Discharge Rating: Safe, stable continuous current (max 5.2A) designed for low-to-medium drain applications without excessive heat generation
• Standard 18650 Flat-Top Design: Industry-standard flat top form factor (18.40 × 65.00mm) suitable for spot welding, battery holders, and modular battery sleds
• Unprotected Industrial Grade: Direct cell access without internal PCB protection, ideal for multi-cell pack fabrication with dedicated BMS systems
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece packages for individual replacements or bulk production

Specifications, Per Battery

• Manufacturer: Samsung SDI (Supplied by DXF POWER)
• Model: 26J (Associated Names: ICR18650-26J, ICR18650-26J (3), Samsung 26F)
• Size / Form Factor: 18650 Flat Top
• Positive Terminal: Flat Top
• Cell Type: Cylindrical Rechargeable Lithium-ion (Li-ion)
• Nominal Capacity: 2600mAh
• Continuous Discharge Rating (Max): 5.2A
• Nominal Voltage: 3.6V
• Maximum Voltage (Full Charge): 4.2V
• Discharge Cut-Off Voltage: 2.5V
• Protected: No (Unprotected)
• Rechargeable: Yes
• Approx. Dimensions: 18.40mm (Diameter) × 65.00mm (Length)
• Approx. Weight: 44.56g
• Country of Origin: Republic of Korea, China or Malaysia
• Applications: High-output LED flashlights, power banks, emergency lighting, laptop battery rebuilds, medical electronics, portable radios, and custom DIY battery packs

Package Includes

• Samsung ICR18650-26J 2600mAh 5.2A 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 replacement, device testing, or individual device repair
• 10 PCS – Small Rebuilds & Power Banks: Ideal for compact power bank rebuilds, multi-cell torches, and hobby electronics
• 20 PCS – Medium Pack Builds: Suitable for small solar storage banks, portable lighting arrays, and DIY equipment
• 50 PCS – High-Capacity Modular Packs: Great for larger energy storage modules and commercial maintenance spares
• 100 PCS – Master Builder Bulk Set: Best value for workshops, custom pack assemblers, and volume electronics 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.
• Never charge above 4.2V per cell or discharge below 2.5V per cell.
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if damaged.
• Never carry loose 18650 batteries in pockets, bags, or purses with metal objects like keys or coins; always store in an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water, and avoid temperatures exceeding 60°C (140°F).
• 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-charge, over-discharge, and balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 26J cells with consistent internal resistance and true capacity
• Safe and stable 5.2A continuous discharge rating optimized for long lifespan and steady power
• Carefully matched batches for balanced series and parallel pack assembly
• Strict pre-shipment quality inspection and secure protective packaging
• Global warehouse logistics network and responsive technical customer support

Perfect For

Engineered for DIY builders, technicians, and electronics enthusiasts looking for proven, cost-effective 18650 power with dependable 5.2A continuous output and 2600mAh capacity for lighting, backup power, portable electronics, and modular pack projects.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.

The Samsung INR18650-25R 2500mAh 20A Continuous Discharge Li-ion Rechargeable Battery is an industry-benchmark high-drain cylindrical cell trusted worldwide for power-demanding tools and performance electronics. Manufactured by Samsung SDI and supplied by DXF POWER with strict quality grading, this 18650 flat-top cell provides a true 2500mAh nominal capacity at 3.6V (4.20V max charge) with a proven 20A continuous discharge rating. It offers exceptional voltage stability under heavy load, making it the perfect power solution for cordless power tools, high-lumen flashlights, electric scooters, e-bikes, and custom multi-cell DIY battery builds.

Watch DXF Batteries in Action

Key Features

• Genuine Samsung SDI 25R Cell: Premium Grade-A cylindrical lithium-ion cell celebrated globally for outstanding reliability, low internal resistance, and long cycle life
• 20A Continuous Discharge: Delivers sustained 20A continuous power output without excessive voltage sag, tailored for heavy load applications
• 2500mAh High Capacity: Optimal balance of high-current discharge and runtime for power tools and portable equipment
• High-Rate Fast Charging: Supports up to 4.0A rapid charging current for minimal downtime between work cycles
• Standard 18650 Flat-Top Design: Standard 18.5 × 65.0mm dimensions with flat top terminal, ideal for spot welding, battery holders, and modular battery sleds
• Multiple Pack Bundles: Available in 1, 10, 20, 50, and 100 piece packages to suit individual replacements or bulk pack fabrication
• Strict Factory Quality Testing: Cells are inspected for voltage balance, low internal resistance, and capacity consistency across every batch

Specifications, Per Battery

• Brand / Manufacturer: Samsung SDI (Supplied by DXF POWER)
• Model / Type: INR18650-25R (25R)
• Chemistry: Lithium-ion (INR / NMC)
• Battery Size / Form Factor: 18650 Flat Top
• Positive Terminal: Flat Top
• Nominal Capacity: 2500mAh (0.2C discharge)
• Nominal Voltage: 3.6V – 3.7V
• Full Charge Voltage: 4.20V ± 0.05V
• Discharge Cut-Off Voltage: 2.50V (recommended 3.0V for extended cycle life)
• Continuous Discharge Current (Max): 20A
• Standard Charge Current: 1.25A (0.5C)
• Maximum Charge Current: 4.0A (4000mA)
• Dimensions: Approximately 18.5mm (Diameter) × 65.0mm (Length)
• Cell Weight: Approximately 45.0g
• Applications: Cordless power tools, high-lumen flashlights, electric bicycles, e-scooters, robotics, and custom DIY battery packs

Package Includes

• Samsung INR18650-25R 2500mAh 20A 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 repair, tool battery replacement, or testing
• 10 PCS – Tool Pack Rebuilds: Perfect for rebuilding drill, driver, or garden power tool battery packs
• 20 PCS – High-Power Modules: Ideal for 36V or 48V auxiliary modules, robotics, and DIY power packs
• 50 PCS – Mobility & Energy Modules: Tailored for electric bike battery packs, e-scooters, and portable storage modules
• 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.
• Never charge above 4.20V per cell or discharge below 2.50V per cell.
• Do not exceed the maximum charging current of 4.0A (4000mA).
• Always inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if damaged.
• Never carry loose 18650 batteries in pockets, bags, or purses with metal objects like keys or coins; always store in an insulated battery case.
• Do not short-circuit, crush, incinerate, puncture, or submerge cells in water, and avoid temperatures exceeding 60°C.
• 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-charge, over-discharge, and balance protection.

Why Choose DXF?

• Genuine Grade-A Samsung SDI 25R cells with true 2500mAh high-drain performance
• Reliable 20A continuous discharge rating under demanding power requirements
• Carefully matched batches for balanced series and parallel pack assembly
• Strict pre-shipment quality inspection and secure protective packaging
• Global warehouse logistics network and responsive technical customer support

Perfect For

Engineered for contractors, DIY builders, and electronics enthusiasts looking for proven, dependable 20A continuous power and 2500mAh capacity for cordless power tools, flashlights, electric transport, and custom battery packs.

Power your projects with trusted Samsung 18650 performance. Learn more about setups and battery care on the DXF YouTube channel.