Explore our selection of 3S Li-ion BMS modules, ideal for 3-cell (11.1V) lithium-ion battery packs. Designed to deliver safe and reliable performance, these modules are available in various output current ratings to suit a wide range of applications including e-bikes, power banks, LED lighting, and DIY battery packs. Each 3S BMS provides essential protection features such as overcharge, over-discharge, overcurrent, and short circuit protection, along with cell balancing to ensure even voltage levels across all cells and extend battery life. Whether you're building or upgrading your 3S 18650 battery pack, these compact and easy-to-install BMS units help keep your system safe, stable, and efficient. Choose the right model for your current needs and application.