Samsung INR18650-35E 3500mAh 8A Li-ion Battery for Flashlights, E-Bikes & DIY Battery Packs (1-100 PCS)

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.

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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.