Do you need a positive cable for parasitic draw testing?

Some people remove the positive cable to do this test, and that’s fine, but I recommend the negative cable when doing parasitic draw testing. Put your meter on the highest DC amp scale. This might require that you move your test lead to a special location on your DVOM.

How to test parasitic draw via Fuse Voltage drop?

This test will show you how to quickly pinpoint the source of the draw using voltage drop across fuses. This method is fast and efficient in comparison to monitoring current and removing fuses. Using this method prevents the vehicle from waking up during the test, causing you to have to start over from sleep mode. Text instructions below video:

Where do I place my parasitic draw meter?

Put your meter on the highest DC amp scale. This might require that you move your test lead to a special location on your DVOM. Place the leads in series between the negative cable and the negative battery post and take your measurement.

What is the parasitic draw on a battery?

The fuse was pulled, and the parasitic draw on the battery stepped down to .03 amps from the or iginal .25 amps. Notice the setting on the recording amp meter. The meter is set on an amperage scale of one amp per division (5 amps on the screen).

Is there a way to test for parasitic battery drain?

Test for Parasitic battery drain There are two ways to test for a parasitic battery drain; current draw and voltage drop. Both methods require a digital multimeter. You can perform a current drain test with just your multimeter by connecting it in series with the negative battery cable.

Do you need a positive cable for parasitic draw testing?