Designing an Automatic Battery Cutoff Circuit to Prevent Over Discharge of Rechargeable Batteries Part 2

In this video we will design an automatic battery cutoff circuit to prevent damaging over discharge of rechargeable batteries. In part 2 we test the design and discuss MOSFET and Voltage Detector specs.

BOM of battery cutoff circuit: 

• S-1011A70-M6T1U4 Voltage Detector from ABLIC
• DMP4015SSS-13 P Chan MOSFET from Diodes Inc
• BSS138 N Chan MOSFET from multiple manufacturers
• RSX051VYM30FHTR Schottky Diode from ROHM Semi
• 2x 3.3 nF Ceramic Capacitor
• ~100 kOhm Resistor
• 1 to 10 MOhm Resistor (used 4.7M in example circuit)

PCB Layout of Battery Cutoff Circuit