How to Measure Car Battery Drain with a Multimeter?

[CadenLynn]

To measure car battery drain with a multimeter, follow these steps: 1. Set the multimeter to the correct range. The multimeter has settings for measuring voltage, resistance, and current. For measuring car battery drain, rotate the knob to the current measurement setting. 2. Select the appropriate range, typically 20A for most cars, and insert the red probe into the socket labeled 20A. 3. After setting up the multimeter, turn off the car engine and all electrical devices, and lock all doors. 4. Open the hood, disconnect the negative terminal of the battery, connect the multimeter's red probe to the car's grounding wire, and the black probe to the negative terminal of the battery. Observe the current displayed on the multimeter.