The battery tester project kit allows you to measure the capacity of AA batteries. The four LED lights indicate the capacity. Four lights indicate full. One light indicates almost empty. The circuit uses a quad operational amplifier.This provides a reference voltage that determines which LEDs should light up.Testing the kit can be performed with an adjustable power supply or a circuit tester.
The battery tester project kit allows you to measure the capacity of AA batteries. The four LED lights indicate the capacity. Four lights indicate full. One light indicates almost empty. The circuit uses a quad operational amplifier.This provides a reference voltage that determines which LEDs should light up.Testing the kit can be performed with an adjustable power supply or a circuit tester.