Battery Voltmeter Installation Question
I had problems with my 12 volt system on my FW and when I pulled the battery I found that it was only putting out 7 volts. The rig stays plugged in all the time. A few weeks ago someone posted a t...
Forum Discussion
mabynack wrote:JWRoberts wrote:Bill.Satellite wrote:JWRoberts wrote:
There will be NO difference in readings at the battery or the panel.
There certainly can be differences depending upon the coach wiring. The OP will need to give the easy option a try but if that's not accurate the OP will need to find a better option.
As a retired electrical engineer, I assure you there will be NO difference. A digital meter draws micro amps of current from the measuring point so no significant voltage drop will exist.
That's where I'm a little confused. If I wire the meter in parallel across the leads going to the voltage monitor in the panel, won't I just be measuring the voltage drop across the monitor panel and not the full battery voltage?
You will be measuring the voltage present, not dropped, at the panel. If properly wired, there will be negligible voltage drop in the wires from the battery to the panel. With every 12V device on, the difference in voltage at the battery and the panel will typically be 0.1V.
