Why do voltage readings differ between app and multimeter

Aplicatie meet 12.75v zonder belasting

Multimeter meet 12. 62v zonder belasting

Hoe komt dit en wie heeft gelijk?

Depends on where you are measuring the voltage. The farther away from the battery you measure the lower the voltage will get.

Which application, and what is it connected to?
How good is your voltmeter?

Hi,

Victron connect on my phone

Think it might be the meter…it’s a cheap one

Is distance possible like someone told me in ? previous answer

The farther away from the source the greater the voltage drop.

Up to a 2% difference is ‘allowable’ even on good meters.
On some meters is is 3% it will be mentioned in its specs somewhere +/- 2% or whatever the meter specs are for tolerance.

The difference is (12.62 - 12.75) 0.13v. it is within tolerance for most electronics and meter specs.

Ok…nice..
Thankx