Features: The 4S-12V100A LiFePO4 lithium batteries Protections Board ensures safe operation with advanced overcharge protections (3.65±0.025V cutoff), over discharge safeguards (2.35±0.1V threshold), and 100±10A current protections for battery safety in highly demand devices. Featuring intelligent cell balancing (30±5mA current) and temperature controlled protections (75℃ cutoff), this plastic encase board prevents short circuits risks with ≤300μs response time across 20°C to 80°C environment Ideal for drones enthusiasts, remote hobbyists, and power tool users requiring reliable 4S lithium batteries management in DIY electronics and energy storage systems. Perfect for outdoor solar setups, electric scooters, and industrial equipment operating in extreme temperatures ( 20°C to 80°C) where stable battery performances is critical. Engineered with ≤35μA operational power consumption and automatic sleep mode (≤10μA discharge), this protections module maintains battery health during prolonged storage while preventing voltages imbalance. Specifications: Component:Plastic Cell type:LiFeP04 Overcharge voltages:3.65V Overdischarge voltages: 2.35V Common Port With Balance Discharge Current:<100a Charge Current:<50a Package Includes: 1pc Battery Protections Board 1pc Wire note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.