18650 Lithium-Ion Battery 2500mAh

Product DescriptionThe Winway 18650 Lithium-Ion Battery (Flat Top, 2500mAh) is a high-performance rechargeable cell designed for DIY battery packs, power banks, robotics, IoT devices, and electronics projects. With a nominal voltage of 3.7V and a reliable 2500mAh capacity, this battery delivers stable power output and long cycle life.

Featuring a flat-top terminal design, this cell is ideal for use in spot-welded battery packs and BMS-protected assemblies. Manufactured to meet quality standards, the Winway 18650 battery ensures consistent performance, safety, and durability when used with proper charging and protection circuits.

Each battery supplied is quality verified by Freak Engineer, making it suitable for students, hobbyists, and professionals building custom lithium battery solutions.

Key Features

• Genuine Winway 18650 lithium-ion cell

• 2500mAh capacity for long runtime

• Flat top design for battery pack assembly

• Stable 3.7V nominal voltage

• Good cycle life and reliable discharge performance

• Ideal for DIY battery packs & electronics projects

• Supplied and quality checked by Freak Engineer

Specifications

• Brand: Winway

• Battery Type: 18650 Lithium-Ion

• Capacity: 2500mAh

• Nominal Voltage: 3.7V

• Terminal Type: Flat Top

• Rechargeable: Yes

• Weight: ______ g

Applications

• DIY lithium battery packs

• Power banks and backup systems

• Robotics and automation projects

• IoT and embedded devices

• Flashlights and portable electronics

• Educational and research projects