I’ll show you how to make a simple adjustable constant current load in this small project. This system is useful for evaluating the power of Chinese Li-Ion batteries. You may also use a load to assess how stable your power supply is.
Dummy Load Circuit Diagram
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Parts List For Battery Capacity Tester Circuit
IC LM358 1pc
Q1 Mosfet IRFZ44N
VR Variable Resistor 500k
R1 Resistor 1 ohm 5watt
PCB Layout For Constant Current Load
You can download this paper and print on A4 paper and cut any color PCB and paste it on Vero Board Watch video For Details or you can download gerber file from link below