Samsung ICR18650-26J 2600mAh 5.2A Li-ion Battery for Flashlights, Power Banks & DIY Battery Packs (1-100 PCS)

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.

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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.