Introducing the versatile 11.1V Li-ion 18650 Lithium-ion Rechargeable Battery Pack, a powerhouse designed for a wide range of applications. This compact and lightweight battery pack packs a punch with its 3500mAh capacity, ensuring reliable and long-lasting power for your devices. Ideal for power banks, Bluetooth speakers, IoT devices, and industrial applications, this battery pack offers a convenient 3S configuration with an output voltage range of 11.1V to 12.6V. Constructed with high-quality lithium-ion cells, this battery pack delivers superior performance and longevity. With its built-in protection circuit, you can rest assured that your devices are safeguarded against overcharging, over-discharging, and short-circuiting. Compact and lightweight, this battery pack is perfect for on-the-go use or integration into your projects. Unleash the potential of your devices with this reliable and efficient 11.1V Li-ion 18650 Lithium-ion Rechargeable Battery Pack.