Hello everyone,

I'm using 3 MultiGrid and Pylontech Battery without any load at the output. This setup has no particular purpose at this moment, but my task is to prepare a GUI for a communication between the Venus GX and a PC using Modbus. So I use ESS Mode 3. I'm frequently switching between ESS Keep Battery Charged Mode (to charge the battery when I'm away) and ESS External Control (to test and to run my Modbus GUI).

Both modes ran perfectly for about a month, which means I could charge and discharge the battery with energy from/to grid through Modbus communication. Until one day, on which the settings in MultiGrid might have been changed. Since that day, both modes don't work:

In ESS Mode 3, Venus GX doesn't react to the setpoint I sent, but data such as battery SOC can be read as usual. In Keep Battery Charged Mode, the battery is not charging, and most confusingly, these LEDs Mains On, Absorption and Inverter are on at the same time.

I've used Victron Toolkit App to understand this LED combination, but this combination is not available both in the app and the manual. How can these problems, or most importantly, the Keep Battery Charged problem could be solved?

Your help is highly appreciated. Thank you.

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Just a quick simple one (I hope) before I purchase a BMV712: several auxiliary powered loads (sockets etc) in the back of my 4wd are chassis grounded (ie no individual return to negative terminal). As long as the auxiliary battery only has the shunt attached to it, with the chassis ground attached to the system side, everything should work ok right? I don’t have to do anything with the main (starter) battery which shares the chassis ground? (I’m not interested in monitoring the main battery).
thanks for your help!

Hi, What are the AC input conditions for the relay to shift? Via the programmable relay we would like to know if the load is on inverter or on mains.

It seems like the relay is switching all ready at approx 50VAC input voltage!? Result: The relay indicates that AC input is available, but of course the load is still on inverter at this low input voltage.

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Hi There,

I have a site with 6x15kVA Quattro's linked to 3 x 27kVA Fronius Eco inverters. On the VRM portal's overview screen I don't see even solar production on an hourly interval.

Rather everything is lumped into a single hour.

See below graph as example.

Any reason why this is happening?

Thanks

Riaan

Hi Guys,

We have a community project in a Glass grow-dome.

We want to have 4kW of solar panels, BYD batteries and also a generator.

We have the below generator already and want to know can we run both 4kW of solar and the genny together on the Victron Quattro 8kW.

Generator details: (SIP 04478 Electric Start Honda Generator 7.2KVA REF: SIP04478)

Thanks

I would like to build a installation with a MultiPlus 2 and ESS in Germany.

I have now learned that all inverters since 27 April 2019 must have VDE-AR-N 4105:2018-11.

But i only found the "Certificate VDE-AR-N 4105 MultiPlus-II and MultiGrid-II 48/3000".
Inside it says "VDE-AR-N 4105:2011-08".

Someone can tell me if I can build that up and register with the existing certificate.

Or do I have to wait for a certificate with "VDE-AR-N 4105:2018-11"?

Suggestions welcome. Thanks.

I have the following in vehicle 12v, house battery charging/monitoring system :

My AGM deep cycle batteries (360Ah) are charged through a DCtoDC 40A charger/mppt solar controller, connected to the vehicle start battery and 600w of solar panels. Also installed is a Victron IP22 240v to 12v charger.

I use a BMV712 which registers Amps used, when my fridge, lights etc are in use. I understand the 712 Current usage is Net ie Charge current going into batteries Less Current Used by Appliances/loads.

If my State of Charge is 75% and power is only coming in from Solar at 22amps, as shown on my Charger/mppt controller, with all appliances/loads switched off, the BMV712 shows 0.0 A.

Current used by appliances is correctly being registered. This results is SOC % battery capacity, always being understated and way below true SOC. So SOC might show 60%, just before the 712 hits the Charged Voltage setting of 14.3V ( Charger absorption voltage is14.6V), and auto syncs back to 100% SOC. Tail Current is set at 2% (7.2A) and Charge Detection time to 10 Minutes.

I suspect solar charge current is not being registered due to incorrect Shunt connection.

The LOAD connection of the shunt has :

1) one heavy cable, earthed to the vehicle chassis

2) Fridge Negative cable

All other appliances load/negative cables connect to a Bus Bar which is earthed to the vehicle body

The Shunt Battery connection has one cable connected to the connected batteries Negative pole. It's the first terminal on that pole, with the Battery connector terminal above it and the Charger/Mppt Controller Battery power Out Negative cable on top of that. Does this also need need to be connected to the Shunt LOAD terminal ?

I am in the process of changing fro AGM to Li-ion batteries using VE Configure 3. When I select Li-ion as the battery type a panel appears stating that Li-ion batteries "(Also require an Assistant)"

When I go to the Assistants Tab the screen shows "The firmware in the device does not support Assistants"

Which device?

the Quattro 12/5000/22-2x75 (product ID 2633) ? which has firmware 155, or

the CCGX which has V2.33

p will be gratefully received.

Hello

Being new here and after searching the forum, I didn't find an answer and I am looking for some help. Thank you very much for your time and answers.

I am planning to wire in serial, 4 Hankook 12V - 65Ah to get to 48V in order to drive through an Alltrax SR 48300 controller a DC Motenergy ME0909 Motor ( 48V - 100 Amps ).
1) Is it a mandatory to use Battery Balancers (like BMV-702 or 712 ) in a serial AGM Battery Bank ( 4 x 12V ) as I have read somewhere that AGM batteries don’t need equalization ?
2 ) I understand these batteries balancers work when charging but do they work also when running the motor and therefore discharging the batteries ?
3) What is the best way and easy way to charge these batteries ? Is it by charging them one by one with for example a Blue Smart IP22 ( 12V ) or directly with a 48V charger like a MEC ( 48V Charger )

Thanks again

I have a client that has a 2018 Mercedes Sprinter motorhome. They swerved to miss a deer and set the vehicle on its right side in a ditch. The batteries are now refusing to maintain a charge. Do you have any reason for this? It was in the shop for a 3 week stint at which time the batteries got run down to less than 10%. The shop thinks the batteries were damaged in the collision what comments do you have on this and/or do you need more information? Below is what was installed in the vehicle.

Batteries: 2 x Victron LiPO4 90aH Smart Lithium
Part # VENBAT512900410

BMS: 1 x Victron VE.Bus BMS
Part # VENBMS300200000

Load Disconnects: 3 x Victron Battery Protect BP100

Part # VENBPR000100400

From the Shop: We installed a lithium system in, that is comprised of 2 x 90Ah LiPO4 batteries, controlled by a Victron BMS, which is then connected to 3 x BP-100s. One BP-100 for the fuse box (which all loads are connected to except the colour control monitor, which is connected with a fuse but direct to the battery), one BP for the charging source from the alternator, and one BP for the shore power charger. We used to use the AMSolar lithium board to signal the BPs to block charging at low temperatures, but now the latest battery firmware will send the charge disconnect signal to the BPs themselves.

From the Shop:

We just got word from the customer that after 3 weeks of the system sitting idle(starting with a full charge at our shop), their battery was empty and wouldn't charge, and after he put a multimeter on the terminals of the bank, the 2 batteries had a voltage of 2.54v dc across the terminals. Clearly there is something very wrong, as the colour monitor would never draw that much current to drain the batteries, and the BMS is designed to shut off the loads way before the battery gets drawn that low.

Victron 150/35 with BT dongle, LiOn Batts at 36 volts, 7X100 watts panels, 12 gauge 25ft cable to the charge controller, when I switch the charge controller to 48 volts, the voltage goes up but the Amperage goes down. If I switch back to 36 volts, the voltage goes down and Amps go up. I understand that is negative resistance, the backup system setup remain the same no other changes, except that when the batteries have been charged at 36 volts to full, I switch to the GTI and divert the charge controller output to the house to use excess power. the GTI can accept 20-60 volts input it can generate up 3.5Kwh on a good day which is half of my daily power consumption year around except during Summer months where my consumption goes way high because of the AC unit.

Hi everyone,

I have a new install with Victron 12v 150ah smart lithium batteries along with an IP44 charger.

I am using the victron mini bms to control the charge disconnect remote port on the IP44.

Question is " in the Skylla IP44 setting there is a spot where you select BMS present- Y or N."

Do I select yes or no. Or is this only for CAN connected devices

thanks

Ed

Replace Mastervolt Combi with Victron Multiplus to have better monitoring > Can the Multiplus run with the batteries disconnected?

A potential customer has a Vehicle2Grid system. It a living boat with a grid connection and solar panels and a smaller cruiser boat with battery and electric propulsion. Normally the small cruiser boat is next to the living boat and the battery is connected to the big living boat and grid and solar panels and is being used to maximise self-consumption. The system has Mastervolt lithium batteries on the small boat and some switching to connect the batteries to the electric propulsion and a pluggable cable connection to the big boat. On the big boat the battery cable is connected to a Mastervolt Combi battery inverter, which is also connected to the grid connection. On the AC output (micro grid of the big boat) are the solar panels, connected with a Mastervolt AC PV inverter. The Mastervolt Combi is 5000 VA/Watt. There is 4000 Wattpeak of PV panels and a 6000 Watt AC PV inverter. The Lithium batteries are 4 pieces of MLi Ultra 24/5000 (24 volt 180 Ah) in 48 volt configuration.

The system has a dashboard that is base on the Mastervolt monitoring software. But this is not maintained anymore and has all kinds of problems. This is the mean problem that needs to be fixed. It's also not really handy to select another battery usage mode (switch from Max. self consumption to Keeping batteries full, etc.). Also it runs on a laptop, which only purpose is to run this dashboard, which is a waste of power. Etc.

I suggested changing the Mastervolt Combi 5000 VA for a Victron Multiplus 5000 VA, so we could use the CCGX controller. Then we can have a good monitoring system that is being kept up-to-date and under active development. And it will be much easier to change battery usage mode. This can then also be done remotely, something that is not possible now. Also then they can get rid of the dedicated laptop and then will consume much less power with the CCGX. Also it will be easier to interface with all kinds of stuff, now and in the future.

The big question is: Can I use a Victron Multiplus 5000 for this. Because the system needs to run, also when the battery is disconnected, because this is something that normally the Multiplus doesn't like or even can't do??

I am not sure how this works in the current configuration with the Mastervolt Combi, because I was under the impression that this battery inverter also wouldn't like to run without the battery connected.

Or is there some "trick" I can use to keep the Multiplus running, when the battery is disconnected?

Any suggestions and help is welcome. I would really like to make this system (dashboard) working again with Victron equipment, also because this project would open doors to other interesting solar-battery-grid balancing projects that this customer is involved in.

Thanks in advance for any help! :-)

Some time ago charge controller Smart Solar 250/100 have been stopped charging batteries. System consist from 4 SmartSolar 250/100; Quattro 10 kW; Pylontech US3000; Fronius Symo 5kW; CCGX. During day time it sees normal voltage from PV but it doesn't want to charge.

The strange thing is that on that charge controller that does not work, there is voltage about 38V from the PV side at night. Everything else is working. How to fix this problem?

Thank you in advance.

Peak Power Pack 40Ah LED flashes red once every 10 seconds. Battery not waking up.

Hi All,

I have two MPPT 250/100s in parallel.

I have connected them into the wireless network with the BMV712, which is connected to the CCGX. I have also connected them to the CCGX via the bus to USB converters and then to the CCGX and neither of these systems worked.

The chargers do not play well together as one takes the lead say 70amps out and the other just idles at 15amps.

I also cannot "see" these chargers in the VRM portal or the daily PV yeild which I would very much like to see.

The firmware in all the items was updated last Sunday to the latest.

The inverters I am using are two 48/5000 Pheonix in parallel master/slave configuration.

The BMV 712 also goes into charge disconnect, which I would have thought would be part of the wireless/USB network function

Probably enough questions for now,

Cheers,

Dave

Hello

What is the difference between MK2 and MK3 interface? I have one MK2 now. Will I get stuck on certain products?

Thanks

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Hi all,

We are employing the SmartSolar MPPT 75/15 in a number of remotely located instrument cabinets that will eventually be inaccessible to people. To remotely monitor the SmartSolar device, we are utilizing a Serial to Ethernet bridge. This device also allows us to also perform any mandatory firmware updates remotely, but with a caveat.

In order for us to be able to take advantage of the SmartSolar’s load current sensing, our load (‘Ethernet Devices’) needs to be connected to the LOAD output. However, during a firmware update, the LOAD output switches off at the 4% mark, thereby causing the firmware update to stop indefinitely. D1 solves this issue by sourcing power directly from the battery (Batt) when the LOAD output switches off (during a firmware update). The side effect of connecting the Batt terminal to the LOAD via D1 is that the LOAD output never comes back on, despite VictronConnect stating that the LOAD is ON. Instead current continues to flow through D1, therefore current sensing on the LOAD terminal never takes place. Only by utilizing D2 does the load current flow through the LOAD terminal and reported in VictronConnect.

Our question: Before we invest time in building a low-power-loss device (FET in place of D2) to circumvent this issue, is Victron able to provide a firmware update that ensures that either the SmartSolar LOAD output always stays on during a firmware update, or at least a firmware update that would allows us to omit D2? And failing a response here, how can we contact Victron directly with this request?

Thanks in advance,

Michael

The grid in the are where I can is so bad that sometimes only one phase is working. How can I configure the Quattro to use that single phase to charge our battery, and allow the other Quattro to use battery current to provide a stable split phase system.

I have a pair of "Quattro 48/10000/140 120V" that are configure in Split phase 120/240V, to use a single phase that sometimes comes in from a very bad grid. The Quattro that receives the working phase would have to charge the battery so that the other Quattro could provide the other side.

Can this be done?

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I'd like to remotely switch on and off the inverter ("on" on the front panel) which runs to a conviniently situated switch but also swiches more things at the same time. When I need charging I need to keep the inverter off in case of malfunction or generator running out of fuel. Therefor I want to have the front switch sitting on charger only.

As it is wired now I switch over to another inverter since the multi can only do either or but is then remotly switched off so "charger only" is disabled too.

I then need to take out the two wires and put in a bridge. Is the third port for the charger only side and I can put a bridge there?

How do I need to wire it?

Cheers guys

Hi all,

I have an auto load query for mppt controllers.

Firstly our setup us as follows.

We have two arrays:

375 watt with a 100/30 Bluesolar with Bluetooth dongle

460 watt with a 100/50 Smartsolar

We have 720amphour battery bank of 6x 6volt Trojan batteries giving us a 12volt house bank.

My question is, we have a 12volt X 200watt immersion heater for our hot water calorifier on board Emerald.

Is there a way to use the street light function to switch the immersion on at say 14.6volts and off again at 13.6 Volts. As there is no load outlet on the mppt controllers how would we wire it in.

Many thanks for any help you can give. We are trying to use our excess power in the afternoons to automatically heat the water once the batteries are full.

Kind Regards
Colin and Nichola on Emerald
www.yachtemerald.com

Can I use the Venus GX relay to switch a small load (20W @ 24V) off when not required and set this via the VRM Remote Console.

Hi Sir, I have a BIPV Solar system with different technologies. I am using 4 Nos. of 150/70 Charge Controller and want to connect the system to Victron Lithium HE Batteries (24V 100AH) along with LYNX ION BMS 400. Please, can you advise if the 150/70 Solar Charge Controller is compatible with Victron Lithium HE Batteries?

Another solution is to use Victron AGME Lead Acid batteries in 24V 100AH configuration. But do I still need a BMS for this to ensure my batteries do not get damaged and are protected against overheating? BMV 700 seems to be only for monitoring and is not going to open or close any contactor for Lead Acid Batteries.

Thanks a lot

I have a multiplus 24/3000/70 firmware 2610413 and want to change weakac settings in order to be able to sync to my generator but I want to know if Via a Bluetooth smartdongle and victronconnect android app it's possible...and moreover if using victronconnect app it's possible to change all settings like in veconfigure software

Anyone can help me on these questions ?

Cheers nicolas

My install is in a box van type motor caravan and consists of;

12/3000 Multiplus

Cyrix split charging

BMV-712

Colour control

75/20 Solar controller

270w solar panel

Rolls AGM batteries

The cab of the base vehicle needs to have a weld repair made on a small section.

What if any actions need to be made to the installation before the welding takes place?

Does anybody know an electro installateur who has experience in setting up an ESS (victron) for PV in Berlin?

My electro guy is a little afraid.

CCGX + multiplus 2 + pylontec 2000

Is any electrician capable of setting this up?

Hello,

We have taken over maintenance of a site for our client. The VRM system is still registered under the original installer details and they are not seeming to move forward with giving us the adminstation access. We were wondering if there were any further details we need to force administrative access over to us.

They do not appear to have given the owner the rights over the VRM system.

Kind Regards,

Scott Ledingham

Is it possible to still use DVCC with VE.Can smart solars? The information on the CCGX states that VE.Can solar chargers are not supported, however, I just need clarification that this is also the case for the newer Smart Solar devices.

Many thanks.