Introducing the Ultrafire 18650 2600mAh 3.7V with Protection Board (2PCS) - the perfect addition to your high lumens flashlight. With a high capacity of 2600mAh, this rechargeable battery is designed to provide long-lasting power for all your electronic devices. From flashlights and toys to doorbells and headlamps, this battery is versatile and can be used in a variety of devices.But what sets this battery apart from disposable ones is its impressive lifespan of over 1500 recharge cycles. That's more than 3 years of reliable power! Say goodbye to constantly replacing batteries and hello to convenience. Plus, this battery can be easily charged with a laptop, power bank, or wall adapter, making it even more convenient for on-the-go use.Made with high-quality Li-ion material, this battery is lightweight at only 47g and has a compact size of 2.63in*0.73in*0.73in. It also features a maximum discharge current of 4A-5A, ensuring a stable and efficient output for your devices. Don't settle for less, upgrade to the Ultrafire 18650 2600mAh 3.7V with Protection Board (2PCS) for all your power needs.