18650 Lithium Battery Protection Board BMS 2S–6S | Overcharge & Short-Circuit Protection

  Product Overview     The 18650 Lithium Battery Protection Board (BMS) is designed to safeguard multi-cell lithium-ion battery packs by continuously monitoring voltage and current. It ensures safe, stable, and long-lasting battery operation, making it ideal for DIY battery packs, power banks, robotics, and energy storage applications.   This BMS is available in multiple variants to match different battery pack configurations and must be selected according to the exact number of cells connected in series.         Available Variants     Choose the correct version based on your battery pack:   2S – 2 × 18650 cells (7.4V nominal) 3S – 3 × 18650 cells (11.1V nominal) 4S – 4 × 18650 cells (14.8V nominal) 5S – 5 × 18650 cells (18.5V nominal) 6S – 6 × 18650 cells (22.2V nominal)     ⚠️ Each BMS supports series (S) connections only and must match the exact cell count.         Protection Functions     This protection board includes essential safety features:   Overcharge Protection – Prevent