Rechargeable 18650 Lithium-ion Battery Samsung N18650CNP 3.6V 2500mAh 20A

Samsung 18650 N18650CNP is a rechargeable lithium-ion cell with a nominal voltage of 3.6V and a rated capacity of 2500mAh. The cell is designed for high-drain applications and provides a stable discharge up to 20A, making it suitable for a variety of portable electronic devices and custom battery assemblies. The cylindrical 18650 format offers a balance of energy density and current capability for flashlights, power banks, vape devices and DIY battery packs.

Advantages

The battery combines moderate capacity with a high continuous discharge rating, delivering consistent power under sustained loads without rapid voltage sag. Its chemistry and construction ensure reliable recharge cycles and thermal stability within normal operating conditions. The standardized 18650 size allows compatibility with common holders and battery management systems used in consumer electronics and hobbyist projects.

Suitable for

• High-drain flashlights and torches
• Power banks and portable chargers
• Vape mods and regulated devices
• DIY battery packs and custom assemblies
• Portable electronics requiring sustained discharge currents

Key specifications

• Cell type: Rechargeable lithium-ion cylindrical cell (18650)
• Nominal voltage: 3.6 V
• Rated capacity: 2500 mAh
• Maximum continuous discharge current: 20 A
• Typical form factor: 18 mm diameter × 65 mm length (standard 18650)
• Chemistry: Lithium-ion

How to use

Install the cell in devices that accept 18650 cells, observing correct polarity and ensuring secure mechanical contact. Use a compatible charger designed for lithium-ion cells and follow the charger manufacturer’s instructions. For multi-cell assemblies, employ an appropriate battery management system (BMS) or balance charging procedure to maintain cell balance and safety. Avoid using damaged or swollen cells and replace cells showing signs of wear or mechanical deformation.

Usage recommendations

Charge cells at recommended currents and avoid exposure to extreme temperatures. Store batteries in a cool, dry place at partial state of charge for long-term storage. Do not short-circuit the terminals, puncture, crush or incinerate. For high-drain or series-parallel battery packs, always implement proper overcurrent, overcharge and temperature protection.