I have a question about the values displayed during charging and discharging.
When the batteries are charging, I see a positive value, and discharging a negative value.
So when the batteries supply power, they show a negative value. When a generator or grid supplies, The have a positive value on the display.
Why does Victron choose the opposite?
I have worked with large battery systems (Damen Sparky and other large electric vessels) and they all show positive when they supply power.
From the battery’s perspective power/energy is leaving the battery and charge is reducing, so it is negative. The opposite applies for charge.
I would argue the other systems are incorrect, and seem to be reporting power flow from the inverters perspective.
But isn’t that the same with a generator? Power is leaving the generator and fuel tank level is reducing.
The load doesn’t change from positive to negative purely because you start to supply from battery.
I’d like to see it as 2 bucket that are connected to each other through a hose, one has a lower (negative) value then the other, and flow starts to occur.
And in fact, that is how you create flow, by raising voltage, one, compared to the other, is negative and the other positive.
“Leave it as it” is and “NO”.
Thank you for being part of this discussion and your kind language
If a generator is not supplying power, but taking power in a synchronized system (perhaps because of engine or fuel problems) it goes in reverse power, which is indicated by the negative value on the generators display.
When a battery is discharging it is releasing energy (so negative)
When i generate is running it is supplying energy (same as getting it from the grid) so positive.
So when charging a battery you are supplying energy to the battery (so positive)
Right, like a generator.
Must be the industry that does it wrong then.
They have the standard, if it supplies, it’s positive, if it absorbs, negative
This is the first time I read complaints about that.
Victron is doing it like that since they have battery monitors (over 20 years).
I don’t think Victron will change that for one user.
That numbers are not only used for visualization they are also using to control the system.
And it will cause confusion if people with that setting ask for support.
(from Wiki) Electric current is the flow of electric charge through an object. The most common charge carriers are the positively charged proton and the negatively charged electron. The movement of any of these charged particles constitutes an electric current. In many situations, it suffices to speak of the conventional current (why people get confused) without regard to whether it is carried by positive charges moving in the direction of the conventional current or by negative charges moving in the opposite direction. This macroscopic viewpoint is an approximation that simplifies electromagnetic concepts and calculations.
I’d like it to be a feature.
And that is also how I will explain it to my customers.
My node red dashboard will show the industry standard, for easy viewing
