I just can’t get over the inefficiency of my 12v all Victron system. My multiplus 2k tends to run in the 70-80% efficiency range but I’ve seen it down in the high 60% range when I get towards its upper limits.
Here’s an example:
So I’m producing 1683w of solar at this moment in time. My Aircon compressor is on (I’ve tried this with purely resistive devices like a 1500w radiant heater and the result are the same. It’s not a power factor issue) so my AC out load is 1423w. PV should cover the entire load but I’m some how pulling 321w from the battery still.
Side note, I have the DC power meter on even though the only things I’m powering directly via DC is a 5 watt rv light and the cerbo itself which is 3w. Less that 10 watts total DC power and the light isn’t even on. The 83w you see being used is not accurate. It jumps from 10-300w trying calculate the efficiency losses that are occurring.
Let’s do the math:
1683 + 321 = 2004w being consumed
1423/2003 = 71% efficiency
580w just dissipating into my system making heat. The weird part is wires, connections, devices aren’t hot to the touch. Warm, yes, but not to the point of concern.
Is this just normal for a 12v system? For LF Victron inverters? I’m having to seriously over panel to make up for these losses and it’s pissing me off. I plan to go 48v in the future but would like to see some VRM 12v screen shots for y’all’s systems to see if it’s just me.
Please share!
Here’s an example:
So I’m producing 1683w of solar at this moment in time. My Aircon compressor is on (I’ve tried this with purely resistive devices like a 1500w radiant heater and the result are the same. It’s not a power factor issue) so my AC out load is 1423w. PV should cover the entire load but I’m some how pulling 321w from the battery still.
Side note, I have the DC power meter on even though the only things I’m powering directly via DC is a 5 watt rv light and the cerbo itself which is 3w. Less that 10 watts total DC power and the light isn’t even on. The 83w you see being used is not accurate. It jumps from 10-300w trying calculate the efficiency losses that are occurring.
Let’s do the math:
1683 + 321 = 2004w being consumed
1423/2003 = 71% efficiency
580w just dissipating into my system making heat. The weird part is wires, connections, devices aren’t hot to the touch. Warm, yes, but not to the point of concern.
Is this just normal for a 12v system? For LF Victron inverters? I’m having to seriously over panel to make up for these losses and it’s pissing me off. I plan to go 48v in the future but would like to see some VRM 12v screen shots for y’all’s systems to see if it’s just me.
Please share!