Rechargeable Li-ion 18650 Battery Samsung INR18650-29E 2850 mAh

Samsung INR18650-29E is a cylindrical rechargeable Li-ion cell with a nominal capacity of 2850 mAh in the 18650 format. The cell is manufactured by Samsung and is intended for applications that require a balance of energy density and reliable discharge performance. It fits standard 18650 holders and battery assemblies used in flashlights, portable power banks, vape devices and other consumer electronics.

Advantages

The Samsung 18650 battery offers stable nominal capacity and consistent voltage behavior under typical loads, enabling predictable run times in everyday devices. Its 18650 cylindrical form factor provides wide compatibility with existing chargers and holders. The cell delivers a practical compromise between energy density and discharge capability suitable for general-purpose battery packs and single-cell applications.

Suitable for

• High-capacity flashlight cells and portable lighting
• Power banks and portable chargers that accept 18650 cells
• Vape and personal vapour devices designed for 18650 batteries
• Battery packs and DIY battery assemblies using 18650 format
• Portable electronics and tools with compatible battery compartments

Key specifications

• Chemistry: Lithium-ion (NMC/INR-type cell)
• Nominal capacity: 2850 mAh
• Cell size: 18650 cylindrical format (18 mm diameter × 65 mm length)
• Nominal voltage: 3.6–3.7 V
• Typical use: rechargeable single-cell or multi-cell assemblies

How to use

Use this rechargeable 18650 Li-ion cell in devices and assemblies designed for 18650-format batteries. Install the cell observing correct polarity and ensure proper contact with device terminals or holders. Charge the cell with a compatible Li-ion charger that supports 18650 cells and the nominal voltage range. Allow the cell to cool if it becomes warm during charge or discharge and avoid exposing it to high temperatures or moisture.

Usage recommendations

Do not use damaged or swollen cells. For multi-cell battery packs, use cells with similar age, capacity and state of charge and follow proper battery assembly and protection practices. Store unused cells in a cool, dry place at partial state of charge (around 30–50%) and follow manufacturer guidelines for safe charging, storage and disposal.