Samsung INR21700-50G 4850mAh 9.8A (Li-Ion 21700) Battery

A powerful and reliable cylindrical lithium-ion cell for battery assembly and use in technical projects. The Samsung INR21700-50G model combines high energy density, stable current output, and long lifespan thanks to INR (lithium-manganese-nickel) chemistry. The cell's form factor is a 21700 cylinder, and the casing is hard, ensuring compactness and convenience for modular placement in battery packs.

Key Features

• Manufacturer: Samsung
• Type: Li-ion
• Chemistry Type: INR (Lithium-Manganese-Nickel)
• Cell Form Factor: 21700 Cylinder
• Casing: Hard

Technical Specifications

• Capacity: 4850 mAh
• Nominal Voltage: 3.6 V
• Configuration: 1S1P
• Current Output: 2C — 9.8 A continuous discharge, 14.7 A — pulse
• Charge Current: 0.33C — 1.25 A standard, up to 4 A for fast charging
• Dimensions: 21.1×21.1×70.15 mm
• Weight: 69.5 g

Package Contents

• 1. Battery – 1 pc.

What else is needed for working with the cell

• 1. Holder – 1 pc.
• 2. Spot welding machine (if battery assembly is required) – 1 pc.
• 3. Spot welding strip – 1 pc.

Recommendations and Warnings

The Samsung INR21700-50G battery is primarily intended for battery assembly and use in industrial and technical systems: electric transport, radio equipment, uninterruptible power supplies (UPS), and other powerful devices. It is crucial to strictly adhere to technical parameters when designing the system: nominal voltage of 3.6 V, recommended charge and discharge currents (1.25 A standard, up to 4 A for fast charging; 9.8 A continuous discharge, 14.7 A pulse), and to use a protection and balancing system when assembling batteries.

Please note: the cell does not have a raised positive contact — for reliable connection of elements and attachment of busbars, spot welding is required. Soldering cells is strictly prohibited due to the risk of overheating, thermal runaway, fire, and accelerated degradation of internal plates. Adhere to engineering requirements and safety instructions, and verify the compliance of your system's operating parameters before installation.

The Samsung INR21700-50G 4850mAh 9.8A battery — an excellent choice for projects where a large capacity, compact 21700 form factor (dimensions 21.1×21.1×70.15 mm), and relatively low weight (69.5 g) need to be combined. This element is suitable for creating modular batteries in configurations that save battery compartment space, as well as for applications where stable current output is important for safe operation.

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