I was thinking about installing a fan on the battery box. I only want to do this if the battery is above ~98% and the battery temp is above ~30deg and batteries are charging.

I have an MPPT 100/30, BMV-712 and battery temp sensor. 3x100ah. 3x100solar.

How could I connect the battery box fan up so that it only comes on with these criteria?

And - does anyone think cooling the battery box is a silly idea here in Queensland?

Thanks!

Glen

Is it possible to run a forecast based battery management? Considering Geo data, weather, ... The goal is loading the battery not in the morning - but e.g. at noon ..

--

In Deutschland , genauer gesagt in Berlin, gibt es Fördergeld wenn man einen Prognose basiert es Lademanagement umsetzt, die Idee ist den Akku nicht schon morgens direkt aufzuladen bei den ersten Sonnenstrahlen, sondern erst am Mittag , wenn Höchstleistung (PV) anliegt .. Auf diese Weise kann man eine gleichmäßige Einspeisung erreichen. Prognose basiert, heißt auch nach dass man Geokoordinaten mitgibt und eventuelle Wetterdaten berücksichtigt .. Es gibt ja die Möglichkeit über external Control eigene Steuerungen zu implementierenmentieren, hat das mal jemand versucht?

I’ve looked but can’t find this answered anywhere.

I have a Smartsolar MPPT 250/100, hooked up to a 48v array of BAE Secura 6 OPzS cells.

I want to ensure I’m setting the charge voltages appropriately.

Looking at this - https://www.baebatteriesusa.com/wp-content/uploads/2019/03/BAE-VLA-Installation-and-Operation-Instructions-0219.pdf - it appears float is 2.23VPC, equalise is 2.4VPC, and absorption I’ve taken as 2.33VPC.

These voltages are more or less identical to those that victron list for their own OPzS cells - https://www.victronenergy.pt/upload/documents/Manual-Stationary-batteries-EN.pdf.

So... why do all of the OPzS charge algorithms in the firmware seem to be a mile off these values?

The most conservative setting recommended for OPzS (Position 1) gives 2.3VPC for float, 2.68 for equalise, 2.38 for absorption. +0.07, +0.28, +0.05, respectively. It also limits equalise to 8% of charge current, although at 900Ah I should be able to do the full 100A until 2.4VPC at which point it drops to 45A (5A per 100Ah), so surely a setting of 45% would be safe?

Can anyone shed any light on why, and what I should do? I’m using the values from the data sheet currently, and doing the commissioning equalise at 2.4VPC - but the MPPT is limiting the charge current to 5A, when it could be delivering much more - there’s a 4kW array in direct sunlight right now.

Thanks!

Hi@all,

I'm using Smartsolar MMPT 100/20 to manage my 12V AGM (Solar) Battery Bank.
Firmware was just updated to 1.46 but nothing changed.

In Summerholidays I use it for Camping, the rest of the year I put them on my balcony to support almost all dc loads in my household.
I bought this device because Battery Life algoritm promised longer battery livetime for my Battery Bank and to get more visibility of battery usage.
Now as days get shorter battery is already 20 Days not fully loaded (max Voltage never above 13V -curently at 11,7V) and it never dropped the load to fully charge the battery once a week as described in manual.

To prevent my loads from outage I've connected a backup AC/DC source to the dc-grid. When MPPT disconnects it from the battery it will keep the dc-grid at constant 11,5V. All my Loads are capable to run properly with DC voltage at 11,5V (using step-down converters for 5, 6 and 9V devices and one step-up-down-converter for a device that needs constant 12,5V)

[image]

I have an 18S NiMH battery pack with connected in 12 parallel and I want to charge it using my SMART Solar 150/60 or 75/15. Has anyone had success using NiMH batteries with solar? I know that I'll probably need a BMs and any suggestions would be appreciated.

Please confirm that my wiring on left for my bank works.

Trying to work out if my green, orange and blue lines (and single red and black lines) match what the manual suggests. The series and midpoints links don’t allow connecting midway on cable, so I placed on one side. For red and black, use same terminals as inverter.

1, 2 and 3 (blue) are the 3 battery balancers.

[image]

Its not clear if the the Victron guide https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom#minimum_battery_sizing_recommendations applies both to the US 2000 and US 3000 models . The US3000 model is 50% larger yet it seems from the guide that the minimum number of modules are same for both US2000/3000. The article title says US 2000 / 3000 however the paragraph showing the minimum battery size only mentions the US 2000 model

Hello guys!

I have a three-phase ve bus system with two PV chargers.

I think I have some problems with in/out power calculation on the VRM portal.

If I take one-day data from VRM its looks like the PV to battery power more than the battery to consumption power. So how it's happening? If I take from battery-less then I use where the excess power is going?

Hi, I looking for a blue smart battery charger 230v - 12v for a string of 3 x FXH140-12IFR (12V 164.6Ah) Yuasa Front Terminal VRLA Batteries .. Would the IP22 @ 30Amps or the IP67 @ 25Amp be suitable?

Thanks

We have a Lister-Petters TR3 with Stanford 16.6kW generator charging a 24v 1150ah AGM bank with a Multiplus 24/5000. At max charge (120amp) and daily load demand, we have difficulty achieving a constant high SOC. Could we utilise the genny better by having an additional 120 amp charger in conjunction with the Multiplus 24/5000? The +/- leads from Multiplus to bank are 100mm2 x around 4 meters long. Thanks, joe

Hello all,

I was hoping to have increased the size of my system before winter kicked in, alas this hasn't happened.

So I need a charger that will charge my lead 48v Gel bank of batteries and will also be able to charge my new 48v lithium ion phosphate pack when I get it. I will be getting a 240v supply from a diesel generator.

Many thanks

Simon

[image]

i have a new Smart Solar 150/100-TR hooked up as shown in illustration attached, i need to know what values to feed in custom battery parameters (since i cant seem to find its type in presets).

since if i do straightforward calculations, the controller seems to keep on charging the batteries even though the floating voltage seems to have been attained and the load on the inverter is not as much as the current being supplied to the batteries.

please if you could also kindly recommend a safe and efficient charging current for the battery bank please.

I am using the victron bluetooth latest app to configure.

I live in Daressalaam, Tanzania - Tropical Climate with temperatures around 34 Degrees Celsius ( if it helps in temp compensation)

Thank you in advance.

Kind Regards

Romeet Barmeda

Hello everyone, I am off grid with Aquion battery system powered by solar pv and Sunny Island inverter, and an 11KVA generator connected via a Victron 48v Quatro inverter charger rated to 8000w, with a CCGX Colour Control panel and a BMV700. Everything was working fine until the Quatro inverter suddenly stopped charging the batteries and the battery voltage dropped to 5-6 volts. Since when I have been unable to re-charge the batteries from the pv because the Sunny Island display indicates "Grid Failure" and as a result the Victron inverter can't or won't accept power from the solar pv (or my in-situ generator probably for the same reason). I brought in a Fork Lift Truck charger to do the job instead but it also appears not to recognise the grid so won't connect properly to supply any charge to the batteries either. I would be very grateful if someone or @guystewart could advise me on how to get enough voltage charged back into my batteries so that the Victron will pick up the power from the solar pv and the 11KVA generator to charge them up fully again. Thank you

Hi,

I am building a 24V setup very similar to the victron van install (https://community.victronenergy.com/articles/15035/victron-vw-van-electrics-install-schematic-drawing.html) on a old Mercedes Benz truck (no smart alternator).

Instead of the Buck Boost, I will use the new Orion-Tr Smart 24/24-17A (400W) Isolated DC-DC charger behind a Battery Protect.

My negative bus bar and the enclosure of the MultiPlus are grounded to the chassis using 4mm2 wire.

The manual of the Orion-Tr Smart (https://www.victronenergy.com/upload/documents/Manual-Orion-Tr-Smart-Charger-Isolated-EN-NL-FR-DE-ES-SE-IT.pdf) states on page 4:

"Remote on-off
Use the remote function to enable and disable the converter remotely with the remote on/off connector or using the
VictronConnect app. Typical use cases include a user operated
hard wired switch and automatic control by for example a Battery
Management System. If the minus of the service battery is not at
the same potential as the minus of the alternator or starter battery
an isolated remote on/off cable between the BMS and the on/off
port is required, see chapter 4.4 for details."

This should not be the case in a vehicle, but the on page 10, Figure 4:

[image]

there is an isolated remote on/off cable shown.

So here are my questions:

• Is it correct to ground the negative bus bar and the enclosure of the MultiPlus to the vehicle?
• Is it necessary to also ground the enclosures of the MPPT, the Orion etc. in such a setup?
• Basically, I want to use the automatic "engine running" detection mechanism of the Orion-Tr to enable it. In case the VE.Bus BMS triggers the charge disconnect, the BatteryProtect on the charge side disconnects the Orion-Tr to protect the batteries. The question now is, if I also need to deactivate the Orion-Tr to protect it from beeing damaged, like with a MPPT? How would I do this? I have a "Non inverting remote on-off cable, ASS030550200" in my hands. It does not look like the one used in the diagram, it only has three cables (red, black, yellow).

Thanks!

I have the subject inverter/charger installed on a LI system, have updtaed VE Flash to the latest 90.05.153, downloaded the correct VFF for the Inverter charger, have loaded the assistant on SYs Config, all to no avail to delete the continuous error code.

The Bus BMS does not indicate it is enabled. I have triple checked all wiring as well.

Any suggestions?

I am running an off grid installation with the old Multiplus (so not the II). I have a nice battery bank and a charge controller. Everything works fine.

Now I want to install an (micro) inverter to my AC offgrid. What should I do? I have heard I can use the AC out 2 as input and configure the multiplus so that it uses the overcapacity to charge the batteries?

Could I also just connect the inverter to the AC off Grid and will the overcapacity by the multiplus be used to charge the battery? How will that work?

Thanks a lot in advance.

I have a Quattro 48/10000/140 hooked up to two BYD 24v 200ah batteries connected in series, with two blusolar 70 amp mppts and a 5kw array, all connected with a Venus. We are totally offgrid, so fully dependent on our setup. It has been working fine for the past two months since setting it up, but now that we have added some larger draw appliances it has been acting strangely.

The main issue is the Quattro reading the batteries as fully charged, when they are not even close. As a result, it is only float or absorption charging when it should be bulk. Every time I have run my generator (5Kva), no matter what level the batteries are at, it immediately give a false 95% full reading. Even during the day, the mppts will charge the batteries up to about 53v, then they start reading the batteries as full and reading 55.5 float. In both instances, when I use the multimeter to check the actual state of the batteries, they read 53v, not the 55v the charger and quattros are reading.

For example: Yesterday the mppts said the batteries were full at 10 am and started float charging at 55.5v. when I checked the actual voltage of the batter it was about 53.2v. over the course of the day the actual reading slowly climbed to about 53.7v. During the time of day when I know the panels are able to produce over 5kw, they are only producing enough to run the house and float. When the sun goes down, I check the batteries and they are at 52v after just a short time with a medium load. As a result, the batteries don't make it through the night with even a small load of fans, etc. (its 45-50C during day, and 30-35C at night here, so sleeping without a fan is difficult). So the batteries died at 04:30, The Venus read 47.3V (but was claiming to be 43% full), and actual battery reading was 48.1v (Venus was with 800w load, battery was with no load after power to house had cut off). So I started the generator to run the house and charge the batteries. But as soon as I connected it the venus went to 95% and started float charging at 55.5v at about 50w. The actual battery reading was at 48.4v. So I ran it until there was just enough sun to at least run a fan (about 1.5 hours) and when I shut it off the batteries were reading 48.8v.

The first few times I ran the generator, it would run the house and air conditioners on full blast (about 2,200w) and charge at about 1500w. but now it seems it won't charge the batteries because they immediately think they are full. Its really frustrating to have to continually worry about the power running out at night, getting up and starting/stoping the generator. Especially if I have to run it just to power a fan. Please, any help would be greatly appreciated. Thank you.

Hello,i have installed an argoFet 200A with 2 output.

Energize input is powered by 12V from a fuse directly connected to startbattery, after mainswitch

I dont find ignition power that the reason i powered directlys from mainswitch,

This fuse blow almost every time i stop the engine,,,

what can be the problem, is there anybody having this problem?

Best regards

Stein Kåre Nilsen

Brønnøysund

Norway

Afternoon!

We've had a MPPT 100/30 fit on our boat for three months now, alongside 2 Victron 115w solar panels and had no issues. We also have several Victron 110ah Batteries. We noticed today that the solar wasn't coming in from the app even though the sun is out.

The bulk light is flashing and on the app it says the battery state is Off. Previous it shows its on Bulk.

We've done nothing different from yesterday to today, and the app was showing some solar this morning being drawn for three hours and then nothing?

Is there likely an issue with the MPPT or the connection to the batteries?

I have a two Quattro system on my boat. Both are connected to the input mains (220V) and to the 12V battery banks.
The outputs are completely decoupled.

There is absolutely no response by the Quattros. No lights, no charging current, nothing.
I don't really know how to troubleshoot this?
The AC-Input is fine. The outputs are secured by circuit breakers, so there can be nothing wrong there. I even removed the 12V-connection, but nothing happens either. The 12V-connection is protected by fuses, so I doubt this could have fried it. Especially both Quattros at once.

I am trying to set up a 1-phase off-grid system. I have:

+ 2 Quattros 15000

+ 2 Fronius Primo 8,2

+ 2 10 kWh BYD BOX Batteries (with the special VE.CAN Cable)

+ CCGX

+ Energy Meter ET112

+ 14 kVA Genset

Don't pay attention to the oversizing of the system, it will be expanded afterwards. Right now I don't have any connected loads, just the battery and the CCGX can get energy.

I want the PV inverters to produce energy to supply the loads and to charge the batteries if there is excess of energy. If there is energy surplus, I want the PV inverters to reduce dynamically their output power (as with ESS the Zero feed-in feature).

1) Is this possible?

I have set in the Fronius the MG50 code and loaded the assistant PV support Inverter to the Quattros (VE.Bus Configure --> VE.Configure Q1 and then Q2) according to https://www.victronenergy.com/live/ac_coupling:fronius. I have more than 15.68 kWp < 15000 kVA x2 but the assistant is telling me that the size of PV should be less than the power of Quattros.

2) Should I split it (7.84 kWp and 8.2 kW to Q1 and 7.84 kWp and 8.2 kW to Q2)?

The system is not regulating and when there is about 8 kW from the PV inverters, the batteries are loading superfast and hence I get a temperature warning in the Quattro and the system stops. I have set via CCGX a current limitation of 35A but it is not respecting it.

3) How can I limit the power to the battery?

Dag dames/heren, ik heb een Pallas 12/50 die sinds drie dagen ogenschijnlijk niet meer laadt. Ik ben een leek op dit gebied, maar wil het graag begrijpen. De lampjes op de lader gaven voorheen altijd hogere waarden aan dan de laatste dagen, 13,5v-14,5 en als het bootslampje aan was, hoorde je de lader ook aan de slag gaan. Nu niks. Boost-lampje brandt wel, maar laadt indicatie is 12,5 en dat is ook hetgeen de accubank zelf nog aangeeft. Is deze lader stuk? De lader onderhoud een bank van 5 x 70a accu's.

En dan volgt misschien automatisch een tweede vraag. Ik was nog niet bezig met het elektrische deel op ons 'project zeilboot' dus het komt ook wat slecht uit wat betreft tijd. Is deze pallas te repareren? Of vervangen veel sneller en simpeler, of schaf je meteen een Multiplus 12/3000 oid aan omdat je volgend jaar toch al wilde upgraden en gebruik je nu eerst het laaddeel. Dan komt daarna de volgende stap wel. En waarschijnlijk daarna nog meer uitbreidingen.

Ben ik hier aan het juiste adres voor informatie? Heel graag advies, met vriendelijke groet. Thomas.

I have a Quattro 24v 8000 as part of a 4kw off grid solar system with 1000ah traction batteries (12 x 2v in series) . I have a Hyundai DHY8000SELR generator (apparently 7.2 kva) wired into the AC1 of the quattro. I have set the input voltage to a maximum of 16a as my generator seems to trip out if its set above this (which is annoying as it should be able to provide 30a, but this is a separate problem).

The issue is that the quattro is switching to charging (bulk) and mains staying in this mode for a couple of minutes then switching back to inverter mode for about 20 - 30 seconds then back into charge mode. Is there a reason for this? have I got the settings wrong?

Any help/suggestions would be really gratefully received!

I've also set with the dip switches the charge current limitation to 75%

so the dip switches are as follows:

8= off

7= on

6= on

5= off

4= on

3= off

2= off

1= off

I have an ESS system with 3 BYD 10 kWh and PV Inverter in AC out. I have set the ESS mode "Optimized (With BatteryLife)". The system has been working properly for months, with the strategy to take as less energy as possible from the Grid.

For a couple of days, the system has changed its behaviour (without changing any parameter). Now the battery has been permanently charged for the last two days.

I wonder if this is a battery maintenance strategy, in order to keep its SOH as higher as possible. Otherwise, I see no reason for this behaviour.

I was wondering if I could use my workshop generator that puts out a modified sine wave to power my smart charger when needed, or is is best to use an inverter generator the puts out a pure sine wave? Cheers.

Hi all,

I am wanting to add a battery balancer to my system (I’m getting error codes due to midpoint deviation over 2%).

I have x8 6v 520ah AGM batteries, connected in two 24v strings.

I was wondering if the 1a current that the battery balancer can draw will be enough to balance my bank, and if not, do I simply connect two balancers in parallel?

Thanks,

Ray