# How to test if current reading functionality on multimeter is working

I have a new multimeter that I've tested the voltage of a 12v flooded lead acid battery with before.

Today I tried to test the amps running on the battery, to see if there was parasitic draw. As instructed, I disconnected the negative terminal on the battery, and connected the multimeter in series (red to trailer, black to battery). Nothing. No reading, and no power in the trailer.

Is there a way to test if I'm just doing something wrong or if the device is broken?

• The first thing to check is the fuse in the meter. Apr 28 at 23:39
• Post a picture of your setup or the model of your multimeter. For many meters, you need to connect the positive probe to a different point on the meter. Apr 28 at 23:50
• As instructed, I disconnected the negative terminal on the battery, and connected the multimeter in series ... who instructed you to do this? Apr 29 at 0:10