Excellent technology, stable heat dissipation. Overvoltage protection, over-discharge protection. Integrated solution, charging protection. Short-circuit protection, overcurrent protection. Made from high-quality material, durable. Type: Ternary / 4 Strings / 14.8V Wiring Method: Same Port Over-discharge Voltage per Battery: 2.40V ± 0.01V Over-discharge Recovery Voltage: 3.0V ± 0.075V Over-discharge Delay: 60ms Short-circuit Protection Delay: 600us Continuous Working Current: 40A (20 seconds) Instantaneous Protection Current: 100A (can start an electric drill) Overcurrent Recovery Conditions: Load recovery or load disconnection Short-circuit Recovery Conditions: Load recovery or load disconnection Overcharge Voltage per Battery: 4.28V ± 0.05V Overcharge Recovery Voltage per Battery: 4.08V ± 0.05V Overcharge Delay: 150ms Continuous Charging Current (20A version): 25A Charging Voltage: 16.8V (recommended) Balanced Voltage: 4.2V ± 0.015V Balance Current: 42MA Material: PCB Color: Green Package Contents: 1 x Battery Protection Board Only the above package contents are included; other products are not. Note: Light reflections and different displays may cause the color of the item in the image to differ slightly from the real item. The allowed measurement error is +/- 1-3 cm.