3S 20A BMS Protection Board with Balance – 18650 and 3.7v Lithium Battery Pack Module

Description Upgrade your 18650 lithium battery pack with this high-efficiency 3S 20A BMS (Battery Management System) protection board. Designed for 3-series cell packs, it ensures safe and stable performance with built-in balance charging. Whether you’re building DIY battery packs for e-bikes, solar storage, or power tools, this BMS provides intelligent protection against overcharging, over-discharging, overcurrent, and short circuits. The balancing feature keeps all 3 cells evenly charged, increasing battery life and system efficiency. Specifications: – Supports: 3S 18650 Li-ion battery pack – Continuous Discharge: 20A – Charging Voltage: 12.6V – Built-in balance function – Compact design, easy to install Applications: E-bikes, solar systems, DIY battery packs, LED lighting, and more.