Package Includes:1pcs 4S Battery Protection Board (not included LiFePO4 batteries)<br> The protection board has various protective functions for charging and discharging, such as overcharge protection, over-discharge protection, short circuit protection and over-current protect.<br> Choosing a protection board and applying it appropriately is vital to the longevity your batteries.<br> It is ideal for home DIY work and school science project, wide used in battery protection work.<br> Balance function <br> Balance functionthe board equipped ensures that each battery cell can be fully charged at the same time.<br> Specifications<br> Continuous Discharging Current: 100A(MAX)<br> Instantaneous Discharge Current: 150A<br> Charging Voltage: 15V<br> Charging Current: 10A(MAX)<br> Inner Resistance: ≤25mΩ<br> Working Current: ≤20uA<br> Sleep Current (when Over-discharge): ≤10uA<br> Working Temperature Range: -30/+80<br> For 4 Series 12V LiFePO4 Batteries<br> This product is a battery protection BMS board which is designed for 4 series 12V LiFePO4 batteries. Comes with 5P-250mm wire for convenient use.<br> Multi-Protection<br> 1.Overcharge Protect<br> Over-charge Detect: 3.75±0.05V <br> Protect Delay: 0.5S <br> Over-charge release: 3.65±0.1V <br> Detect Voltage: 3.60±0.05V <br> Release Voltage: 3.60±0.05V <br> Balance Current: 36±5mA<br> 2.Over-current Protect<br> Detect Voltage:150mV <br> Detect Delay: 9mS <br> Current Detect: 200±10A Release Condition: Cut Load<br> 3.Over-discharge Protect<br> Over-discharge Detect: 2.0±0.1V <br> Over-discharge Detect delay:0.1SRelease Voltage:2.25±0.1V<br> 4.Short-circuit Protect<br> Protect Condition:Load Short Circuit<br> Detect Delay: 250uS <br> Release Condition: Cut Load<br>