Rechargeable Lithium-ion 18650 Battery Samsung INR18650-25R 3.7V 2500mAh

Samsung INR18650-25R is a rechargeable lithium-ion 18650 cell with a nominal voltage of 3.7 V and rated capacity of 2500 mAh. Designed for high-drain applications, this Samsung 18650 battery delivers stable power output and is compatible with standard 18650 holders and battery pack assemblies. The cell conforms to common industry dimensions and can be used individually or assembled into multi-cell configurations for portable electronics, flashlights, power tools, and DIY projects.

Advantages

The Samsung INR18650-25R offers a balance of energy density and discharge capability, providing reliable run time in high-drain devices while maintaining moderate capacity. As a rechargeable lithium-ion cell, it supports multiple charge/discharge cycles and straightforward integration into battery holders and packs. The cell’s standardized 18650 format simplifies replacement and upgrades in compatible devices.

Suitable for

• High-drain flashlights and tactical lights
• Portable power banks and battery packs (when assembled appropriately)
• DIY electronics and maker projects requiring 3.7 V cells
• RC devices and power tools that accept 18650 cells
• Battery holders and multi-cell assemblies for custom applications

Key specifications

• Brand: Samsung
• Model / MPN: AK18650.2500/25R (INR18650-25R)
• Format: 18650 (cylindrical)
• Chemistry: Lithium‑ion (INR)
• Nominal voltage: 3.7 V
• Capacity: 2500 mAh
• EAN: 3100000517304

How to use

Use the Samsung INR18650-25R in devices designed for 18650 lithium‑ion cells. Observe correct polarity when inserting the cell into battery holders or packs. Charge the cell with a compatible lithium‑ion charger that monitors voltage and current and follows manufacturer-recommended charge protocols. For multi-cell assemblies, use proper battery management (BMS) or balancing circuits to ensure safe operation. Avoid exposure to excessive heat, direct flame, or prolonged short-circuit conditions.

Usage recommendations

Store cells at moderate state of charge (around 30–50%) for long-term storage and keep them in a cool, dry place. Use chargers that provide proper cut-off at the recommended charge voltage and avoid deep discharges below the recommended cut-off voltage for the device to prolong cycle life.