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Devaughn Tyler avatar image

Victron 100/20 no history

I was showing the phases of my charging now it doesn't show anything

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When u click the day it doesn't pull anything up like it used to

I suspect you have a blown fuse or dodgy connection.

Also is the "charger enabled"?

Panel Vmp seems a little low (Batt voltage +5v rule), what panels do you have?

Only 1 100w renogy I just plugged in one panel just to test the controller out for a week before I added the rest just in case yes charger enabled and it's cool no overheating

You will need to connect a second panel in series with the first for the system to work. The single panel voltage is not high enough to charge the battery.

Devaughn Tyler avatar image Devaughn Tyler Guy Stewart (Victron Community Manager) ♦♦ ·

So 2 panels in series .? (2)12v 100w for 24v?

Im only putting power into one 137ah SLA 12v battery

Is that ok?



8 Answers
Justin Cook - Bay Marine Supply USA avatar image

@Devaughn Tyler, there's not really any such thing as a "12v panel" (with the exception of the dash-mount ones that you plug straight into your cigarette lighter to keep your battery topped off, and even those are sitting around 14v)

Your Renogy panel is putting out between 15 and 20v on a good day, which makes it suitable for a 12v battery bank, but does not make it a 12v panel. Connecting two in series should net you between 30 and 40v into the MPPT, which is well within its parameters (it can take 100v of PV input). The controller will take the high voltage and low amperage being generated by your panels and turn it into low voltage/high amperage (up to 20A) to charge your battery... so yes, you'll be good with a second panel in series.

The problem appears to be that your PV voltage is never getting high enough to initialize the controller, thus there's no history. The controller needs to see battery voltage +>5v to turn on, so if your battery is sitting relatively full at 12.5v, the controller won't even turn on until your panel is generating >17.5v, which it's failing to do under current conditions. Thus, by adding a second panel wired in series, you're increasing panel voltage and ensuring that the controller turns on and starts charging sooner, and under less-than-ideal conditions.

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JohnC avatar image

Hi D. This looks like a brand-spanking-new installation, but please advise if it isn't.

In the middle of the night it's likely 'dormant', and awaiting a new day to lock in yesterday's figures. It doesn't know the time (despite you seeing it on your phone), and will determine by itself a 'solar midnight' when it experiences another sunrise.

If this scenario fits, just be patient, and all should magically appear when it sees a new day..

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Devaughn Tyler avatar image

New day still no data


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There's no harvest here today because your battery is already full. The MPPT needs batt voltage +>5v to turn on, and your battery voltage (lowest) was sitting at 12.79v, and your single Renogy panel was only generating 17.74v, which is <5v, so your controller never initialized, thus why you have no history for this day.

Devaughn Tyler avatar image

It used to show then it just stopped I checked all my connections it is the simplest install u can run no fuses or breakers just panel to pv battery to battery

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Devaughn Tyler avatar image

I upgraded to this I was running a renogy wanderer with no issues

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Matthias Lange - DE avatar image

If you just installed the MPPT and cleaned the history (0kWh lifetime total) it can't show more then today, just wait a few days.

The MPPT don't have a build-in real time clock. So it starts a new day when PV-voltage rises again after it was low.

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It's just started not recording I have had it a week before it was showing me day by day all the phases of charging I reset it the other day because it wasn't showing

Devaughn Tyler avatar image

When I get home around 23:00 I check to see if I have the history and today I can see yesterday's history but cannot see todays


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Today just started and I think there was no sun in the night, so let the sun rise and wait till noon ... :)

Devaughn Tyler avatar image

It used to do this but I Will attach my other panel and see but why did it work before?


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