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Now that's a bit of a misnomer. When victron says 100/20, they mean the maximum voltage the unit will can handle coming in. The 20 is the maximum amp the mppt can send to the battery. In order to "puff" max wattage performance, they use their "nominal" 14.5 and 29V (not typical 12V and 24V)...

I am EXTREMELY reluctant to give out name of a specific company. All I can tell you is they are pretty big in solar. They have physical presence in mid-west, they have online, and they also sell on amazon. I specifically bought copper wire from them (not lesser price) from others thinking...

Yes. It is manually set to 24V. However, because it is a 6S some of the charge parameters have been reduced accordingly. But your point is well taken. I will upload the all current settings shortly.

For us 34.78v would not be safe. This is a custom 6S battery with max battery voltage of 25V. We run between 20 (LV cut off for the inverter) and 24V for max. This is well below the tolerances of the battery build. For 6S, we are told don't do more than 24 - 24.5V. But for grins, we may...

I would check the wire you get with a proper gauge.

Buy a sample and test what you get with a proper wire gauge. Unfortunately, to do proper measurement down to the low voltage drops of 8AWG wire precisely requires some good instrumentation which most of us cannot afford.

There is a setting in the app where you pick your system voltage. We have it set to 24V.

I cannot change the maximum battery voltage. It is fixed to 24 - 25V. It would be pushing to go above 24 as sense voltage can be off and thus a higher battery voltage can actually sense lower. The 24 gives me head room. Also, we are using less to give longer life out of the battery. You...

I will get a screen shots of the settings. It was set to 24V. However, the Solar Tester says available to it is 330W - 350W (mid day). The MPPT is only producing 270 - 290W. There is a discrepancy between the 330W - 350W the tester reports and the production sent to the battery. However...

I purchased wire marked 8AWG from a highly reputable company. After install, I notice voltage losses that were higher than I expected given that I had used 8AWG. Out of desperation, I checked the gauge of the wire which is labeled 8AWG. It is more like 11AWG. I am still battling the wire...

Odd ball battery has nothing to do with it. The SCC manual says it works at any voltage from 12V to 48V. I am well above 12V, even if the battery is dead at 18V, by 6V. The SCC is suppose to work! If such a limitation exists then point to Victron specifc document that says your claim.

Hey, I'm on board with this help. I'm in the same situation. I didn't know the shunt had to be programmed. We have a BVM712. 2x100/20 MPPTs. A Multiplus 3000/24. And we have a CERBO GX.

But there is nothing in the SCC that says it's 6S. And in all purpose, the only thing that should matter is volts and amps. The voltage of operation is well above 12V and the amps it can accept is well above 20A. Even at 20V (which is the lowest the battery has been, and 20A that's 400W. The...

The temperature messing with the voltage current is in the spec of the solar panel. It's not voodoo. Just think of it like tire pressure. If the MPPT says the most pressure it can handle is 100 and the fastest you can drive is 20, then you know pressure changes with temperature. In the case...

By that kind of reasoning a 12V lithium battery is 4S which is only 10V. And so people who use 10V batteries should not expect 290W. All this is moot. The SCC has been told the voltage to charge at, which is 24V.

Panel mount etc makes no difference. We tested the optimum tracking point with a test tool and it showed the panel to produce 330 - 350W. The SCC was only delivering 270 - 290W while in bulk. The charge voltage was set to 24V there was no restriction put on charge current. All this talk of...

The wattage and voltage tests were done in July/Aug. Yes, the tester was confirmed against a bench DC power supply up to its max 30V and 10A rating. I have no reason to believe that it would not continue to behave up to its 800W Max. Yes the voltages Voc and Isc were measured. I have no way...

Thanks for the correction. It did seem like a lot for a 24V battery.

We have a FROG 800W tester. It's decent enough. We checked with the Solar manufacture that it was acceptable for testing. The person we spoke to had no issue with what it was reporting or questions about it's quality. All it does it track voltage and current and report the mppt voltage and...

One way is about 24 feet. While it is not that long and 10AWG would be good enough for most people, we bought 8AWG. However, that turned out not to be true. It is actually 10AWG. However, we have ruled this out using a solar tester. After the line length and loss has been taken into...

No - we are taking two. Each dedicated to 375W (measured output at 330 - 350W). Each SCC reporting numbers between 270 - 290 range. So, both could be duds, hard to believe. All equipment was updated as of July/Aug when tests were done. We originally thought (and blamed) the solar...

Remember the rated amount is 375W. To get 290W out of 375W panel is 77%. But when I say 290W, that is the very max we have EVER seen. On the other hand, the solar tester tells us that the voltage and current at mppt are higher and reports that we should be seeing 330 - 350W. The FROG tester...

It was a public service announcement to all buyers check wire gauge before installing. I was not going to tell anyone who the seller is and while I've been asked to, I've decided against it. You have a foolish notion of not taking action. Do you think all the effort to make all measurements...

Ah, I'm am not running at 12V (actual). I am running at 24V (actual). However, victron calls 14.5V as 12V and 29V as 24V. Thus in victron land, I am not running 24V. I am 5V below. That is why I believe this model has downshifted to 14.5V and max of 290W. Now either there is a problem in...

I take your point. But the concern you have is more of my poor ability to explain the setup. So let me clarify. There is one panel per one 100/20 MPPT. Each MPPT is identical (100/20). Each solar panel is identical (375W). The Solar Tester shows the two panels are very close (at mid day)...

Absolutely! The hottest thing when I checked for hot spots was the SCC. While wires were all at ambient or close to ambient, the wires connecting into the SCC were 5 degrees hotter. I then thought these must be the problem. Then I used temp gun on SCC. It was 15 - 20 above ambient. I...

Please point to Victron manual as others have said it could be defective MPPT. And I'm still of mind that there is some kind of configuration problem as Victron sales guy did not agree with your assessment. I have passed on that 24v, actual, is too low and is he certain that it's not. He...

I don't know if I can do that, but next sunny day I'll try and capture. The status when we have been doing test has been in bulk. We know that production could be lower otherwise.

While I cannot recall this. The safest voltage is 24V and that is the Bulk. No current limit other than the default 20A. So, it should be able to deliver 24x20 = 480W, assuming the input watts is available. We believe at time(s) of test input available was 330 - 350W range (mid-day). This...