Rechargeable Li-ion Battery Pack Samsung INR18650-29E 18650 2850mAh 3.7V

Rechargeable Samsung INR18650-29E is a cylindrical Li-ion cell with a nominal capacity of 2850mAh and a nominal voltage of 3.7V. The cell delivers high energy density and a stable discharge profile suitable for devices that demand sustained power delivery. It is intended for use in single-cell applications and as part of multi-cell battery assemblies when cells are matched and connected correctly. Proper charging with a compatible Li-ion charger and adherence to safe handling and storage practices are required.

Advantages

The Samsung INR18650-29E offers a balance of capacity and energy density that supports longer run times compared to lower-capacity 18650 cells while maintaining acceptable discharge characteristics. Its nominal 3.7V output provides predictable voltage behavior under load, and the cylindrical 18650 format ensures compatibility with many existing battery holders and battery pack assemblies. The cell’s chemistry is optimized for consumer and portable electronics applications where space and energy density are important.

Suitable for

• Flashlights and portable lighting devices
• Power banks and portable chargers
• Vape devices and e-cigarettes (follow device manufacturer recommendations)
• DIY battery packs for tools, hobby projects, and portable electronics

Key specifications

• Cell format: 18650 cylindrical Li-ion
• Nominal capacity: 2850 mAh
• Nominal voltage: 3.7 V
• Chemistry: Lithium-ion (INR variant)
• Typical applications: high energy density, portable devices

How to use

Use the cell with chargers and devices designed for lithium-ion 18650 cells. Install the cell with correct polarity and ensure secure mechanical connection within the device or pack. When assembling multi-cell battery packs, match cells by capacity, internal resistance and state of charge, and use proper balancing and protection circuits. Charge only with a charger that supports Li-ion charging profiles and terminates at the correct cut-off voltage. Do not expose cells to heat sources, mechanical damage, or short circuits.

Usage recommendations

Store cells in a cool, dry place at partial state of charge for long-term storage. Periodically check cells for physical damage or swelling and discontinue use if abnormalities are observed. Follow local regulations for transport and disposal of lithium-ion batteries.