18650 3.7V B Grade Rechargeable Li-Ion Lithium Battery (1 Pcs)

18650 3.7V B Grade Rechargeable Li-Ion Lithium Battery (1 Pcs) – Affordable Power Source for DIY and IoT Projects

This 18650 3.7V B Grade Li-ion battery is a cost-effective rechargeable power source for a wide range of applications, including Arduino projects, IoT devices, flashlights, portable gadgets, and more. Though labeled B Grade, it offers stable voltage and decent performance for low to medium power projects, especially suitable for students and hobbyists in Bangladesh.

Note: B Grade batteries may have slightly lower capacity or cosmetic imperfections but are tested for basic functionality and charging.

Key Features:

• Nominal Voltage: 3.7V

• Rechargeable Lithium-ion cell

• Standard 18650 size (approx. 65mm x 18mm)

• Capacity: ~1800mAh–2200mAh (varies per batch)

• Suitable for low-current and general-purpose use

• Cost-effective for prototyping and experimentation

• Requires a separate battery holder or protection circuit

Applications:

• Powering Arduino, ESP32, and other development boards

• Flashlights, emergency lights, and portable fans

• DIY electronics, robotics, and smart farming projects

• Power banks and energy storage for IoT

• Educational and prototyping use in Bangladesh

The 18650 3.7V B Grade Li-ion Battery is an affordable solution for your everyday DIY electronics and IoT power requirements.