A multimeter will check the battery voltage. If it’s higher than the rated voltage, your battery capacity is okay. But if it’s lower, you’ll have to replace your battery. Testing without a multimeter ...

// Variables for current measurement float input_current = 0.0; float temp_current = 0.0; float r1_current = 33.0; // Resistor value for current measurement mA float r2_current = 3300.0; // Resistor ...

Last week, we introduced you to the multimeter (“John, this is multimeter. Multimeter, this is John. John owns a vintage car. John really needs you.”) Today we’ll tell you how to use the multimeter to ...