2500 mAh 3.7 Volt 18650 Lithium Li-ion Rechargeable Battery

The 2500 mAh 3.7 V 18650 Lithium-ion rechargeable battery is a high-capacity cylindrical cell designed for a wide range of portable and high-drain applications. With a nominal capacity of 2500 mAh and a typical voltage of 3.7 V, this battery provides long-lasting power and reliable performance for devices that require consistent energy delivery. The “18650” designation refers to its standard size of approximately 18 mm in diameter and 65 mm in length, making it compatible with most battery holders, packs, and DIY assemblies.

Constructed with Li-ion chemistry, this battery offers high energy density, low self-discharge, and efficient power output. It can be safely used with protection circuits or battery management systems (PCB/BMS) to prevent overcharge, over-discharge, over-current, and short circuits, ensuring both safety and longevity. With proper care, it can handle hundreds of charge and discharge cycles while maintaining stable voltage under load.

This versatile battery is ideal for flashlights, power banks, portable electronics, e-bikes, tools, and other high-drain devices, as well as custom DIY battery pack projects in series or parallel configurations. Its combination of high capacity, reliability, and wide compatibility makes the 2500 mAh 3.7 V 18650 Lithium-ion battery an essential choice for hobbyists, makers, and professionals seeking dependable rechargeable power for a variety of applications.