18650 Flat Top 3.7V 1800mA Li-ion Rechargeable Battery (Good Quality)
Price in Sri Lanka

This 18650 lithium-ion cell provides a 1800mAh capacity suitable for general-purpose electronics and portable projects. Operating at a standard 3.7V, it offers a cost-effective power solution for a wide range of battery-powered applications. The flat-top terminal design is engineered for seamless installation in battery holders with spring-loaded contacts or for the assembly of custom battery arrays using spot-welded nickel strips.

Specifications

• Battery Type: 18650
• Battery Capacity: 1800mAh
• Battery Chemistry: Li-ion (Lithium-ion)
• Battery Voltage: 3.7V (Nominal) / 4.2V (Fully Charged)
• Battery Terminal Type: Flat Top
• Brand: Unbranded (Good Quality)
• Product Dimensions: 18mm x 65mm (Diameter x Height)

Features

• Standard Power Output: Provides a stable voltage supply for basic electronic components and microcontrollers.
• Universal Sizing: Compatible with standard 18mm x 65mm battery compartments and holders.
• Rechargeable Design: Can be charged and discharged multiple times, serving as an alternative to single-use batteries.
• Project Friendly: The flat-top surface is suitable for both contact-based holders and DIY pack building.

Common Applications

• DIY portable electronics and hobbyist circuitry
• Educational robotics (Arduino, Raspberry Pi, or ESP32 projects)
• Low-to-medium drain LED flashlights and portable lanterns
• Wireless sensor nodes and solar-powered data loggers

Usage Recommendation

Note: These cells are recommended exclusively for hobbyist and experimental applications. For mission-critical, high-drain, or professional industrial use, we recommend using certified Tier-1 cells.

For better quality, please consider the following products:

• Samsung 18650 Button Top 3.7V 3500mA Li-ion Rechargeable Battery
• Samsung 18650 Flat Top 3.7V 3500mA Li-ion Rechargeable Battery