Description The 1S 3A BMS (Battery Management System) is an essential component for protecting single-cell Li-ion and Li-Po batteries. It ensures safe charging and discharging, prevents damage due to overvoltage, undervoltage, short circuits, and overcurrent. With a compact design, this BMS is ideal for DIY battery packs, small portable devices, and electronic projects requiring reliable battery protection. Key Features: Battery Type: 1S Li-ion / Li-Po (3.7V nominal) Max Continuous Current: 3A Protection Features: Overcharge Protection Overdischarge Protection Short Circuit Protection Overcurrent Protection Operating Voltage: Typically 4.2V charge, 2.5V discharge cutoff Compact Design: Easy to integrate into DIY battery packs or devices Applications: Small electronic projects, DIY battery packs, portable devices, single-cell Li-ion modules Dimensions: ~20mm x 15mm x 3mm (varies by model) Weight: Very lightweight (~5g) This 1S 3A BMS ensures safe operation of single-cell batteries, extending battery life and providing reliable protection for electronic devices.