DFRobot 18650 Battery Protection Module allows three 18650 battery cells to be added together to create a rechargeable battery pack. This module features sophisticated design, fine workmanship, and small size. The 18650 battery protection module supports overcharge, over-discharge, overcurrent, and short circuit protection. When three 18650 batteries or polymer lithium batteries are combined in series, the maximum instantaneous current can reach 10A. This module greatly enhances the service life and ensures the security of the 18650 battery pack. Typical applications include solar street lamp battery packs, monitoring backup power supplies, and other electronic products.