Bought the 100A Digital Multimeter Voltage Tolerance

[HKZBob]

Hi I have bought this Current Voltage meter as well that Will uses as well.

The voltage display is 0,3V off the battery voltage. Do you have made the same experience. It this unit displays internal voltage incl. internal voltage drop off powering the coil
Used external supply. No difference.

Do you made the same experience.
Can the toys been adjusted?

I saw similar behavior unter load.
But I have no current to measure?

Greetings