Samsung ICR18650-30B 3000mAh 6A Li-ion Battery for Flashlights, Power Banks & DIY Battery Packs (1-100 PCS)

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.

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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.