Torque of Ohmm

[3bears]

so my torque app said I was only putting out 13.1 volts, with wipers, heaters and lights on
yet when I then lifted the hood and put an ohm meter on my battery, it said 14.2 with the same load

which would you think is more correct

 

[absalom]

Your multimeter on the terminals should be dead on the money. You might check against another multimeter to confirm it's accuracy tho.

 

[StreetCreeper]

so my torque app said I was only putting out 13.1 volts, with wipers, heaters and lights on
yet when I then lifted the hood and put an ohm meter on my battery, it said 14.2 with the same load

which would you think is more correct

Talking out my ass here, but couldn't there be some sort of voltage loss depending on how good the connections are between the battery and wherever the torque app pulls its reading from?

 

[TheDurk]

Talking out my ass here, but couldn't there be some sort of voltage loss depending on how good the connections are between the battery and wherever the torque app pulls its reading from?

There are two fuses between the battery and the ECU (where Torque gets its reading from.) Fuses have to have resistance to work. So that's part of it, plus connections and wire length. So, not out of your ass. That said, the meter is probably the better reading.

 

[mtbtim]

It's the Torque Pro app. For some reason it shows around 1 volt lower than it actually is. I've also tested my charging system at the battery and came up with around 14.1-14.3 volts. My volts show regularly around 13.2 volts via the Torque Pro app. Even though it's not accurate, we can still use it to know when a charging issue is arising because we'll be showing less than the normal 13.1-13.2 volts.

I'd rely on the multimeter value at the battery terminals to assess the output of the charging system.