This is our second full day with zero solar though our panels are bathed in light. I have not touched my wiring. Nothing has changed yet two days ago we were getting great charging from them and now yesterday and today absolutely nothing.

Help?

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(System details at the bottom of this post)

Headlines:

Both 100/20 MPPT charge controllers (configured identically) enter float before batteries are fully charged (set to 28.4 volts by the BMV-712) and even below the float voltage, which is set to 27.2V (Float is being entered around 26.9V, which is about where the BMV and MPPTs settle with a variation of about 0.04V between them, seen in image below)

I've ensured the charge controllers are reading actual battery voltage at night (via history), not just reading 0V

Charge controllers connected via closed breakers, and the solar system is capable of delivering around 700w when I do something like turn the AC on mid-day. I can watch the power flow via the Cerbo GX console window on my laptop

They also will charge the batteries, just not to full capacity.

The batteries will charge to full capacity on shore power (or generator, same thing.)

Additional Information:

I've given the following threads a read, and tried my best to follow along and check off things where I could understand:

https://community.victronenergy.com/questions/83517/batteries-not-being-fully-charged.html

https://community.victronenergy.com/questions/193395/smartsolar-goes-to-float-before-batteries-are-full.html

https://community.victronenergy.com/questions/171324/24v-battery-bank-in-float-before-bulk-charge-volts.html

I've also consulted the online Victron and Battleborn documentation for ideas. Here is the documentation for my batteries (I have 2 in parallel for a 24V 100Ah system)

https://battlebornbatteries.com/wp-content/uploads/2022/10/BB5024-Manual-Edition.PIM_BB5024Rev018_09062022.pdf

Some screenshots:

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OK, so only one screenshot, the forum isn't allowing me to upload anything else, just throwing errors. So I'll just dictate.

Second Screenshot was settings from the BMV-712

100Ah

28.4V

0%

4.00%

3m

1.25

95%

0.10A

3m

Third Screenshot was settings from one of the 100/20 charge controllers (Both identical)

24v

Charger Enabled (on)

User Defined

Expert Mode (off)

29.00V

27.20V

28.80V

Equalization - Disabled

Full system Outline:

4x Rich Solar 200w panels, each divided into two strings for each charge controller.

2x MPPT 100/20 Smart Solar charge controllers

Smart BMV-712 w/Smart Shunt

Cerbo GX (connected via hard line VE bus links to BMV-712 and both charge controllers.

2x Battleborn 24V 50Ah batteries in parallel

MultiPlus 24/3000/70

Orion 24 - 12v converter (for RV 12v system)

The trends trace is a great feature but lately it shows my panel voltage dropping intermittently. Is this normal tracking on a gloomy day or should I suspect my controller is malfunctioning?

100/30 firmware version 1.61

708 watts of mixed panels

150ah used Sinopoly cell 8s

Solargeni 100a BMS

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My 175w system has been running a year with no problem but, since Sunday, it has been off unexpectedly. Currently it's showing a lower than expected voltage (it's a lovely sunny day here) but no wattage reading and no current value

I have cleaned the panel, checked the connections and the Bluetooth connection and all is fine. Until Sunday the history showed all graphs as I would expect.

I don't think the panel is currently charging my batteries so any help is appreciated

Thanks

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All connections seem correct. Firmware updated. Battery set to Lithium

Hi, I have a 150w solar panel on my van connected to MPPT 75/15 charging 2 AGM batteries.
All was working well before the winter, now not charging. Checking the voltage directly from the panel 27v, voltage at the end of the cables disconnected from the MPPT 27v, connected to the MPPT (checked across the screw terminals) drops to 13v. All fuses including the 20a at the bottom of the controller are ok, all battery connections also ok.

Is there anything else to look for or could this be a controller or solar panel fault? All ideas welcome. Thanks

Hi there,

My configuration is: Multiplus II + 3 MPPT + 2 Pylontech stacks of Force L2 + Lynx + Cerbo GX.

It is off-grid (with no grid code), without any assistant (like ESS) but with the VS (virtual switch) on "Dedicated AC Ignore" to maximize self-consumption.

My MPPTs seems under the "external control" of the Pylontech BMS.

I try to limit the charge of my Pylontech stacks to 90% (or below) but they keep charging till they reach 97%, ignoring my general settings of the Multiplus (see the VE Config).

Is it because of the "external control" mode ?

Any idea how I can set a SoC max of 90% ?

Should I try to set this SoC max of 90% directly at the BMS level ?

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ConfigMultiPlus2.pdf

I have a Smart solar MPPT 100V 50 amp charger controller.

I have 3x 100W panels mounted on the roof of my camper, and another 3x 100W panels sitting on the ground with PVC stands holding them up at an angle. All 6 panels are wired in parallel, and both strings (3 on the roof and 3 on the ground each connect to a 3 way connector) are then wired to a busbar that connects to the charge controller input. All 6 panels are same make and model.

I normally get 500W +/- during the day. Noticed today I was only generating about 70W. My batteries (2x 200ah lithium connected in parallel) were only 70% charged. It wasn't overcast, so I figured there was an issue. Went outside to unplug the panels that were sitting on the ground, then checked the controller. I was only getting about 80W from the roof. 2 of the panels were in the shadow of my roof AC, so I was expecting it to be lower than normal. Charge controller was in bulk mode.

I then threw a circuit breaker to disconnect the roof mounted panels and plugged the 3 on the ground back in. Was getting about 250W. Controller was in bulk mode.

I threw the circuit breaker for the roof mounted panels back on, then the controller switched itself to float mode and was only pushing about 50W to my batteries. Which were still only about 70% charged.

Whatever's causing it is new. Again, I've been generating up to and over 500W during peak hours over the last 5-6 months. It was my understanding that shadows on any panel would only drop the total system wattage if all of the panels are wired in series. None of them are.

Any idea what to check? Why would the controller only switch to float mode when all 6 panels were connected???

Any help will be fully appreciated. Thanks.

Smart MPPT 100/50 stops charging system until I cycle power. What conditions could stop charging? Where can I read up on this?

Just completed our first travel trailer trip of the season. Towards the end of each travel day we got multiple notifications from the SmartSolar Charger of high input voltage. This occurred on 3 of our 5 travel days - all between 5-8 hrs long. There were multiple days of running solar only at our various campsites with no issues. Would the issue be with the DC-DC charger overcharging from our truck? This is our 2nd camping season with the Victron system - zero issues last year.

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Hello,

We have an RV with a Lithionics 48V RV-C lithium battery & BMS (fw v9.0.02), Cerbo GX (fw v2.94), Multiplus II 3kW (fw 492), SmartSolar 150/35 (fw v1.61).

Periodically the system experiences an error with these symptoms:

• The MPPT appears to lose communication with the battery
  • It changes from Ext. Control to Float, and produces code #67
• The inverter AC output turns off
  • The VE.Bus state changes from Inverting to Off

It seems to only occur during the times 7am - 9pm, never after 9p or before 7a. Perhaps it has to do with the solar cycle? In my mind this is not likely a wiring issue, since it doesn't occur overnight.

The issue has always been rectified automatically in a short period of time (1s to 1m, 41s).

See table below for instances of the error, and snips from VRM showing the other symptoms.

Any insight is welcome and appreciated. Thank you!

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Device	Triggered by	Description	Started at	Cleared after
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/19/2023 13:27	19s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/18/2023 18:18	11s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/16/2023 9:50	1m, 3s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/15/2023 14:42	55s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/15/2023 13:52	1m, 5s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/14/2023 16:39	50s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/13/2023 18:07	1m, 6s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/9/2023 7:14	59s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/8/2023 12:15	56s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/6/2023 16:46	1m, 41s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/6/2023 15:32	59s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	4/4/2023 8:08	1s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	3/28/2023 13:23	3s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	3/27/2023 17:13	11s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	3/23/2023 12:20	47s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	3/1/2023 17:07	1m, 6s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/28/2023 16:16	1s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/26/2023 13:09	28s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/25/2023 16:12	23s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/20/2023 9:48	46s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/19/2023 15:41	27s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/18/2023 17:28	53s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/18/2023 16:39	22s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/17/2023 15:36	18s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/17/2023 14:23	17s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/16/2023 17:53	1m, 2s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/13/2023 19:09	58s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/13/2023 10:59	1m, 2s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/12/2023 13:42	55s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/7/2023 10:26	49s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/6/2023 10:22	53s
Solar Charger - Solar PV array [279]	Automatic monitoring	Error code: #67 - No BMS	2/5/2023 15:36	51s

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Is it possible that PV can run the AC loads or at least contribute to the grid supply. Today for example, plenty of sunshine and a full battery. the PV chargers only letting through 5w, while its taken average 200w to run the AC loads. An ideal scenario would possibly be. Solar tops off the batteries first thing in the morning, then between solar and battery storage the AC is run for the day, Only using the grid in the evening's to help with the short fall of power. Is this looking for to much from the system ? We are using two MPPT, 250/100, 150/35 along with two multis.Screenshot_20230118_140414_Chrome.jpg

Hello I've an MPPT 100/30 and it only charging my battery onices then just saying it full? I needed to unplug the slower MPPT and then replug it for it to charge onice more any helps would be amazing peace ✌️

while my generator is running,my victron multiplus is charging it showing bulk charge while at the same time the smart charger is showing absorption why ? Thankyou

Hi all. Have a question regards Victron Smartsolar MPPT 150/45, firmware 3.13.

Sometimes it won’t start to charge with full power, it just stays between 0-20watt In Bulk modus.

It can be working fine for a while, and the next day when the sun raising, the voltage increases and charge power Is stuck below 20watt. Look like it won’t maximize the charge with voltage and current. The voltage should go down, and the current should raise. Just stay with high voltage.

Suddenly next day everything is working fine again for a while.

Anyone who have experienced something like this?

MPPT is 2 months old. So the warranty is there. But will check with somebody first, because they will probably blame me for wrong settings.

It is really annoying to use generator for charging, when the sun is shining.

-Newest firmware, 3.13

-Have tried to resetting the MPPT from Victron Connect app, IOS iPhone.

-Have tried to disconnect the PV and battery from MPPT, but no changes.

-Checked all connections, all torqued up.

-MPPT should charge with full power, 1200w+-.

-No problem to charge with generator 1800w. Working fine, so it can not be the battery. (Multiplus II)

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