Hello, I cannot figure out why my Victron battery monitor is stuck at 100%. I have disconnected the load lead from the shunt and did a zero calibration with no luck either. I don't have any solar just a battery and DC output right now. Any ideas what is wrong? The charge has dropped all the way down to 11V with no change from 100%. Thanks

Equipment:

Battle Born 100AH Lithium battery

BMV-712 battery monitor connected to GX monitor

Charger/Inverter - Multiplus 2000watt

hi,

i have accidentally connected the battery in reverse polarity (i know, dont ask how..shakes head).

the controller still partly works, but is only allowing about 6w in from the panels.

i can read the app when the sun is out, but at night the app wont load, the bulk light still comes on too when the sun is on.

im assuming the non-replaceable fuse is blown.

is it really non replaceble?

whats the cheapest way to get this fixed?

thanks

B808

Good morning chaps,

I am just after a bit of help/advise. I have just finished installing a Victron Multiplus in a motorhome conversion. It is installed alongside a 70a MPPT solar controller and all are wired to a CCGX. I recently upgraded the firmware in the CCGX as the multiplus and ccgx were previously in a household setup and they have been stored over a year since I purchased them used.

The MPPT shows in the CCGX via the VE Direct cable and that shows fine, showing the solar input, battery voltage etc.

The issue is that the CCGX does not show when the Multiplus is turned on, it shows a symbol for a Multiplus but it always shows off, even when the inverter is on and powering appliances. The Multiplus is connected using one of the blue bus cables to the VE BUS input on the back of the CCGX and I have tried it plugged in to both connectors in the Multiplus but nothing shows up as working. The Multiplus also and has a temp sensor that is connected from the Sensor connection in the Multiplus to the negative terminal of my battery bank (this all came as a used setup kit other than the mppt).

Should it be a case of just plugging in the blue network cable in both the Multiplus and CCGX and it should all display as connected and working? I presume I am correct with the temp to the negative?

The setup and install is pretty much complete, I just want the Multiplus to show on the CCGX as everything is getting boxed in very soon so wouldn't want to have to rip everything out to change a cable etc....

Attached is a pic of the CCGX, I can take more pics of the back and cabling if required.

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Can anyone help out here with some info or advise to get the Multiplus showing on the CCGX?

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HI. I bought an Victron Phoenix Inverter 24/800 and none of the manuals that come with the inverter or that I can download, shows where I can bond neutral to earth.

The only way that I can see how to do it, is to move internal earth wire to neutral on output board. Would this be acceptable to do as it looks like there is provision made for it do be done.

I have attached some pics of output board.

Thanks

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Hello! In a setup where grid feedback is not allowed, is it possible to have a single Multiplus or Multiplus II or similar installed on a single phase of a 3 phase network (230V), while having all or most of ESS features ? Will ESS phase compensation be possible without being able to feedback to the grid? If not, is this an issue? Many thanks!

I have recently installed an ESS System (Victron Multiplus 48/5000/70) with one BYD 5kWh and Fronius PV Inverter connected on AC out (on-grid system).

ESS is on "Optimized (Without BatteryLife)". The connection between PV Inverter and Victron is wireless.

The system is working ok but I have some issues which for the moment are unsolved.

For example, the PV production is frequently stopped just to return in the next seconds.

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As you can see from the graph, PV is having a strange behaviour when charging the batteries, the graph looks like a saw teeth when I was thinking to be like a smooth line. The PV throttles down to 0 frequently as you can see and I do not know the cause of this.

Any ideas?

Just got in the solar game and am hoping to get a head start on how to wire and program different systems using VE config and MK 3 etc

Are there any detailed tutorials that demonstrate this ? Also would like to know how to wire up a switchboard, thanks in advance guys

Is the MPPT 100/30 suitable for 5x 120Ah lead-acid batteries connected in parallel? All batteries will be of the same type and new.

If yes, what should I keep in mind?
What is your recommendation for 600Ah?

Why 5x 120Ah? Because they currently have the best price performance.

Hello everyone, variations of this question have been asked before on the forums.

I have a 2000W DC water heater and all I'm really wanting to do is to use extra solar to power it, (-only if and when) my Tesla batteries are fully charged or almost fully charged. - I'm talking about utilizing the extra power that the solar panels don't bother to produce while the batteries are in float charge mode.

Simple plan:
Program the SmartSolar MPPT relay output to turn on when battery is at float and use that output to control a Solid-State Relay that is connected to the water heating element.

I guess my questions are:
1) Do I get to use the maximum available solar panel wattage into the DC heater while the controller is in float mode?

2) Micro-cycling lithium batteries = bad? (or) does this consideration even apply in my case? -Controller may (or may not -depending on Victron operation logic) be going in and out of Float possibly dozens of times per day?

3) Why do some people seem to need some sort of PWM output from the MPPT controller to achieve this? - is it that the SmartSolar only puts out its full power during Bulk and the aim is to try to keep it in bulk mode while powering the heater?

4) I have a BMV-712. Should battery State of Charge be a part of this consideration?

Please let me know what you think.

Thanks.

We have a battery pack (2x 12V 110 AH PbCa) for Engines and a second battery pack (2x 12V 110 AH PbCa) for service on our motor boat (34").
All our circuits (engine start, lights, electronics...) are in 12V.

We plan to install two 115 W Blue solar panels on the roof to maintain batteries fully charged when we are not on board (if we are on board, the batteries are charged by the engines).

Our shipping area is from Britanny and Scotland, with a quite low solar illumination (!)

What is the optimal solution ?

- Use of two separate MMPT regulators (and 1 solar panel / regulator / battery pack) ?
- Use of Blue solar PWM DUO charger (and the solar panels in serial or parallel) ?

- Another more optimal solution ?

Thanks for yr help and your experience.

Regards

Hi All,

So this has got me stumped :( I have tried everything else that could possibly cause this issue but think it may be my setup with the charging. So here’s a summary:

I have a 36v Ezgo golf card which previously ran on 6 x 6v Trojan Lead Acid batteries. As a company we have recently got into the solar field so wanted to "experiment" with converting the cart to Lithium batteries as a side project. After quite a bit research I settled on 3 x 12v 108Ah Blue Nova Mobile batteries in series (https://bluenova.co.za/wp-content/uploads/2019/03/BN13V-108-1.4k.pdf).

To cut a long story short we did the conversion and it works brilliantly. Then came the issue of charging. One option would have been to use the 36v charger I already had for the cart. However, my concern there was that the "charging algorithm" on the charger was for lead acid. I did some research on Lithium chargers and found one expensive 36v option. I then got chatting to my Local Victron dealer and he suggested I use 3 x Blue Smart 12v (25A) chargers and install them in the cart permanently wired up to the batteries. What I liked about this idea was that I would be certain that each battery would be charged equally and would never get a battery imbalance (and it worked out cheaper) 12 So I went this route….

Fast forward 2 weeks – cart is going great, no issue and then suddenly battery 2 & 3 turn off (being battery 1 connected to main positive and battery 3 connected to main negative) 1 i.e. the internal battery BMS shuts off… I have gone through COUNTLESS different theories on what could be the cause (from parasitic drain, to wiring etc) but at the moment I’m wondering if the following could be happening (but need someone VERY knowledgeable people to prove or disprove).

So could the following be happening?:

1. Battery 2 and 3 discharge just ever so slightly more than battery 1 during use (as battery one is connected to main positive and batter 3 to main negative).

2. Then during the charging “somehow” the three chargers pick up on when the first battery is full (battery 1 in this case) and then all three chargers move to the next charging phase (say from bulk to absorption).

3. This leads to battery 2 & 3 losing out on just a little of a full charge each charge cycle.

4. In my case the cart is used daily and uses about 30 % in a day. After about 2 weeks maybe that “ever so slight” loss on every charge cycle drops the battery to a low level and the BMS turn off the battery to protect itself?

5. It is a “theory in progress” as the batteries where turning off every few days until I separated the 3 batteries, charged them, put them back in series and then for the past 2 weeks it has been perfect (until yesterday when they shut off again). So last night I separated the batteries again, charged them up and ill see how long they last.

6. So in summary, I suppose what I’m asking:

a. Can you use three of the Blue Smart 12v (25A) charges on 3 x 12v batteries connected in series (i.e. one charger connected to each battery)?

b. In such a setup would they in any way affect the operation of each other?

As a last note, I did install a BMV-712 Smart BUT because of the way the chargers are connected directly to the battery the “input” from the chargers cannot go through the shunt. So its set to reset to a full state of charge at a certain voltage (approx. 42v). This has helps me see what the parastitic drain is (approx. 0.01A) which I think is acceptable. This was verified with a clamp meter.

Any other suggestions would be appreciated 12

Thanks,

Richard

I'm assembling my first Victron Energy system. The new SmartSolar MPPT 100/50 acts as though it's not seeing sufficient voltage to start charging. It flashes all three lights momentarily upon battery connection, then the 'Bulk' light (blue) flashes periodically every 3-4 seconds. No sign of Bluetooth for pairing using two different devices. Nothing changes upon connection of PV, though the voltage drops from the open circuit voltage (Voc - about 44 VDC) to near zero when the breaker is flipped. The controller is not heating up as though it was sinking the PV power (600 watts).

PV Configuration: Four (4) HQST-150D panels in a 2x2 configuration (24V nominal); expected voltage drop between array and controller will be around 1.2% at optimum voltage and current (Vmp=36; Imp=17A). Voc confirmed between the hot side of the breaker and PV- of the controller before closing the breaker.

DC Distribution: Midnite Solar breaker between the batteries and the MPPT 100/50 (battery on the '+' side of breaker) and another between the PV array and the controller (PV on the '+' side). Voc confirmed between the hot side of the breaker and PV- terminal of the controller before closing the breaker.

Power Storage: Four (4), large AGM batteries in parallel (12V nominal). Voltages are balanced and presently around 12.5 VDC with a 30 watt load being fed directly from the batteries.

Thanks for any suggestions you may provide!

For an off-grid system setup including PV and Genset, but doesn’t have any battery storage.

1. How would the suitable Victron components be, Is possible to use the Quattro in that case, or any other Victron inverter?
2. 
   
3. Can the Easysolar solution be used in that case without a battery connection?

The loads are mainly an AC pump and some lighting loads.

Hi there,

I have recently doubled my storage battery from Pylontech US 3000 (3.5kW) to 2x US 3000 (7.0 kW

I am running MPPT 150 / 45 Solar Controller and Multi Grid 48V/3000VA/35Amps Inverter / Charger.

The displayed charging current and Wattage seems to be that of only one battery as it does not compute up to the display on solar yield vs consumption.

I have connected the data link from Master battery Link Port "1" to Slave battery Link Port "0"

connection to Venus GX is from "CAN" port

Any advice please

New to a recently installed and working lithium system on a canal barge and trying to understand the interplay of all the settings.

I have installed a Multiplus 12/3000/120 with 2-wire assistant controlled by the 123SmartBMS, 3x Smartsolar MPPT 100/50s, about 1660 watts of solar, BMV712 controlling an EV200 main bus shut off solenoid, BP220 to control the PV charge wired as a relay controlled from the 123SmartBMS and BP100 set up to control 12v loads, 123SmartBMS, 800 Ah of Winston cells in a 2p4s configuration.

The Multiplus was set up with the 2-wire assistant and the default lithium settings of Abs 14.2v and Float 13.5v; the 123SmartBMS was set to default Vmin 2.95v, Vmax 3.45v, Vbypass 3.4v. MPPTs to Lithium setting.

Charge Restart 95%, Discharge Restart 20% .I really don't understand what these mean in practice in terms of cell voltage. Please help.

The battery hovered around the float voltage of 13.5v.

With the above settings and connected to shore power the battery discharged from about 13.5v (3.5v/cell) to 13.0v more quickly than desireable and did not increase in voltage above the absorption setting of so a lot of potential power went unrealized.

I then raised the 123SmartBMS to Vmax and Vbypass each to 3.5 v/cell (battery voltage 14.0v) and the Multiplus to Abs 14.2v and Float 13.80v which gave me a greater capacity for discharge.

Now the battery hovers around the float votage of 13.80v (shore power).

When switching on the solar to this installation (and disconnecting shore power) from a battery charged to 13.8v I have to wait until the battery discharges down to 13.23v before the 123SmartBMS charge relay switches on to charge the battery from the PV panels. The problem is that by this time I have missed all the morning sunshine that could have been pouring into the battery.

What needs to be done to take advantage of all the day's sun?

Thanks in advance, I have found this site very helpful for my design.

Hello together,

as Newbie with Victron systems I have a question. I did not find an answer in the threads:
Our system is running well in the shown 3-phase configuration (3x Multiplus II with current sensors, Fronius Symo, BMZ storage, CCGX, system in ESS mode, two AC outputs: non UPS loads and UPS loads), but on the CCGX display there are never separate boxes for AC direct loads and critical loads as shown in the manual.

What setting has to be changed to get two separate boxes for the loads on the display?

Thanks for Infos!
REL

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`Hei

I frequently use remote control in my ccgx. This has been working fine several year. Last week the remote console in vrm connects to my ccgx, asking for my password... when I type, nothing happens. I clearly have connection to the site, and data logging is working correctly. When I arrive on site, I access on lokal network... and everything is working fine. I have runned update, different browsers and reset everything. anyone experiencing something like this? I have not changed internett provider... everything is the same :-(

mvh vegar bartnes

Hi,

it would be nice, the everyone can choose if he would use the limiting to 52.2 Volt when using Pylontech batteries or not. A simple switch to yes/no would be nice.

See: https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom#my_system_only_charges_the_battery_to_52v

Having been running fine for a number of years, the inverter side of my multiplus has shut down and I can not get it to stay on. If I power off and power on it comes on briefly and then turns off again. The charge side is all fine. Any hints welcome!

I thought the battery-icon with bars was in direct relation to SOC.

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Yesterday I tried updating the firmware on my Multiplus II 48/3000/35-32 (then on firmware 459), using VictronConnect 5.11 on macOS Mojave (10.14.6).

This is what happened -

• There is a Venus GX plugged into the Multiplus II, and I plugged another UTP (RJ45) cable into the Venux GX as it was easily accessible. I initially only wanted to change the charging efficiency setting on the Multiplus II.
• I saw that there was a firmware update, and followed prompts in VictronConnect to update. I was still connected via the Venus GX - correctly / incorrectly, I don't know.
• The update failed with Victron Connect saying it lost connection to the Multiplus - for a short while a combination of LEDs was flickering on the inverter, and then it reset itself (or something) and was working again.
• I took a short time myself to recover from my own kernel panic.
• I realized that veflash asked you to connect directly to the inverter, and not to have anything else connected. So, I disconnected the venus gx, connected directly to inverter via the mk3.
• I tried the firmware update again - to v463 - and this time Victron Connect crashed on the mac. The inverter just had the "bulk" LED on.
• I had another kernel panic myself. After a while I switched the inverter off, and on again - and it was fine.
• I decided that this was enough fun with Victron Connect on mac, and updated via veflash to 2628465.vff - successfully.

I am not sure what the issue is with Victron Connect, but I did not try updating the firmware a third time...

I have a Multiplus 5kW 24V connected to Victron LiFePO4 25.6/200Ah Smart batteries with a Victron VE. Bus Battery Management System. The Multiplus has the VE Bus BMS Assistant loaded. The AC detector has also been installed. The battery voltage went low and shut off the inverter and when the generator was started and 230V AC put to the inverter nothing happened. How do I get the system to start up when the generator is ON????

I shortly be installing a 8000kva Quattro, 250/100 charge controller, Pylontech batteries and a Venus GX. Do I need the MK3-USB cable to adjust the settings?

Thanks Tony

Good Day gents (and ladies)

I have an interesting issue, that's driving me nuts! - Nuts I tell you!

What I want to achieve, is drive an extractor fan, when the Multiplus is in a charging state (any), and turn off the relay, when it's done charging after some time, quite simple, or so I thought.

I have done a ton of reading on this forum from priorities, up's and down', AND/OR's and vaguely explained logic when it comes to the Assistants, but I still cannot get the Assistants to work correctly.

Summary:

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Step 1: Turn the relay on when the device starts charging (incl. Equalisation/Absorption charge) - why? - Because the batteries are in an enclosure, and I want to vent the box of gasses.

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Step 2: While charging the relay should remain on, for at least 30 minutes.

IDEALLY: I want to relay to be on for at least 30 minutes, after charging is completed, but that seems too advanced.

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Step 3: When aforementioned conditions have been met (aka completed), the relay should turn off.

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I have tried different variants, spelling out the off condition, i.e: When not charging for 10 seconds, set relay off - but that didn't work.

So for some reason, the relay comes on, but never, NEVER switches off... what am I missing?

Any support will be greatly appreciated!

Kwagga

I have been testing various converter setups to charge 2 6V AGM batteries connected in series. Total capacity is 225Ah, Peukert exponent = 1.12. I discharged the batteries to 20% state of charge, then connected the converter and monitored battery voltage, charge current and SOC as reported by the BMV-712. I also calculated the state of charge using the Coulomb counting method, assuming a charging efficiency of 95%. I would have expected my calculated SOC and the SOC reported by the BMV-712 to match, but they don't:

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The BMV-712 SOC reads consistently high and reaches 100% while the converter is still in bulk charge mode. My calculated values seem much more reasonable and believable. Interestingly, if I set the charging efficiency in my calculations to 120% (crazy, I know) then my calculation of SOC matches the BMV-712 exactly.

Anyone any idea what is going on here?

I have two Quattros, both connected to a DC power bank.

I also have a Bluesolar MPPT 150 l 70 MC4, but this is not installed yet, since I haven't bought any solar panels yet.

Now: how do I control and monitor all of this stuff?
I do have a Raspberry Pi lying around, so the ideal solution would connect this to both Quattros and the MPPT, since I could also use it for a security camera etc.

I did buy the MK3-USB, but I didn’t get it to work with my Mac.

I also have two multi control panels — which to be honest I would rather sell and not use.

I have screwed up the proceedure of hooking up the MK3 to USB installation and now cannot get passed finding a com port. I hooked up the device prior to installing the driver to the MK3. I have lithium batteries and cannot utilize my multiplus charger until I change parameters. Can someone help this newbe to the Victron world what to do?

Thanks

Rick

Is an MK3 interface the same as an USB 3.0 to RJ45 interface?

The USB 3.0 interface communicates but there is no communication with my Multiplus Compact 12/800/35.