Hello.

I have 2 LiFePO4 12,8 V / 200 Ah Smart (series cabling) on Multiplus (via BMS and Ac detector).

When in the evening, I launch a dishwasher, suddenly the voltage which is arround 25,0 or 26,0 V, drop to 18,7V (2,33 per cells) and immediatly go up to 20,0 V, 21,0V... to reach 25,0 V again.

On multi-plus we can read : CA Input (2600W), CA Output (2600W), and state : "Main power assistance" or "Direct Capacity".

I just want to know if it's normal in this case (relay ot the battery, by the main current), and without consequences for the battery lifetime, or if we have to change parameters, knowing that multi-plus parameters and mppt parameters are fixed with the template for LiFePO4, proposed by the software interface.

Best Regards.

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!

Hello, I think after two years batteries are gone. It was set up and configured by company for my father, but was not monitored or serviced either. After he noticed often low voltage alarm he asked me for help, as the company is not reachable anymore.

There are 10x panels (AS-6P30-260W),
BlueSolar Charger MPPT 150/70 firmware 1.46
MultiPlus 48/3000/35-50 firmware 4.30

4x 12V victron 110Ah Gel batteries (in series)

I've studied something, purchased cables updated firmware, installed venusOS on raspberry, changed to ESS (before there was some Hub system - preventing feeding to grid - no allowed in my country) but still voltage drops very quickly and almost 90% usage is from AC grid even on sunny day, though usual load is between 200-600Watts, so I suspect inverter shuts down due low voltage very often.

I've read in this forum system is not able to run without batteries (he do no want to invest in new batteries anymore) question is, is it possible to set it up that way it will use as much solar power as possible even with such "dead" batteries, if yes what is the best configuration.

Or is Multi 48/3000 capable running with smaller voltage e.g. 12V or 24 ? I could try to isolate broken battery and try to set it up with remaining good ones, or maybe use spare 12V car battery if it's necessary for system to run

I work as a consultant providing RFID detection equipment for fish and wildlife services. Lately I have needed the what Victron 100/20 MPPT solar controller is marketed to provides - a cost effective, user friendly smart solar controller that will work in either 12 or 24 volt configurations. I mainly run 24v. Regarding the load output settings, which would be the best for a continuous load (antenna always running) but to still be able to disconnect the load when the batteries drop below say 22.5 and reconnect at 24? I have tried the user defined algorithm with the previous parameters but have heard heard feedback that the load will not reconnect and the yield in the history will show 0 from that point forward. I have tried to duplicate this scenario in my shop but was unable to do so. The reason I am asking now is I have heard from a second customer in an opposite solar region whom experienced this same issue. I have assumed the disconnect at 22.5 and reconnect at 24 will prevent the batteries from going totally dead.

Hi: 
I have an off grid system consisting of 6 270W panels, 1 Victron Phoenix of 500VA / 48V, a Blue Solar 150/35 48V regulator and an 8x100Ah battery bank in two series of 48V each. The loads are luminaires of a corridor (210W installed) that must be turned on when the darkness of the afternoon starts and off at dawn, however they go out between 1 and 3 in the morning. 
I checked the sizing and it is fine, what I don't know, is if there is any voltage parameter that is incorrectly configured in the inverter or regulator, and that causes the system to shut down, due to low voltage maybe. As a background, the maximum battery voltage during the day reaches 57.5V and the minimum voltage, when the charges are switched off is 37.44V. 
I would appreciate comments to someone with more experience in this type of configuration, to see if I can solve it. 
Thanks in advance,

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?

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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

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 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

[image]

Hi, I would like if someone with more experience than I can help me to solve this. Actually we have an Off-Grid site with 4 PV strings, every string have 16 50w solar pannels connected in serial-parallel to get 24V to the power bank (14 batteries 12V 100Ah each battery). Each string have a Morningstar PS-30M, but they are connected in parallel on the load port and works well, but we have to replace them, because they have more than 20 years in use. I have seen that a Smartsolar MPPT 150/35 is a good option, but we can't connect the battery banks in parallel to charge the batteries because they are in 2 different places with a distance between them of 4 meters (around 8 meters of cable difference between the longest cable and the short one, so they could have a difference of the charge voltage. How can we connect the battery banks to the load with the Smartsolar and maintain the 4 battery banks?

Thanks a lot for your help.

We have one fitted, that is showing broken up information on the lcd panel. I am told they are obsolete, fair enough, but will anything else be out there to replace it?

Has anyone got one?

Hello everyone,

I have a 80 V battery with a output current of 200 A.

I want to convert this to 230 V, but therefore I will first decrease the voltage to 24 V.

For that I want to use Orion 110/24-360W ( I wish I could Orion 110/48-360W but I can`t find it so probably it don`t exist).

Then I want to use the Phoenix 24/5000 to make 230Vac.

The problem is the current, because I don`t know if the orion can handle such high current.
I also don`t know what the output current of the orion is. And at least I also don`t know what the needed inputcurrent must be for the phoenix.

The idea of this is that with a 80V battery I can provide elektricity to a building in case of a black out. And for that I need a converting systeem from 80 Vdc to 230 Vac with high power. This systeem described above is the only way I could figure out so if anyone have a better idea pleas let me know.

We have added a US 3000 Pylontech battery module to an existing bank of 5 US 3000s. On completing the installation and switching on - all battery modules are operating normally and the system itself is operating normally with no faults showing. the battery monitor however is showing the fault;

[image]

this alarm has been active now for 24 hours. what is the reason and how do I rectify it. I suspect it is a result of and arc when closing the fuse to the inverter - but as i say the alarm is still active.

The system consists of;

1 x 8KvA Quattro

2 x 150v 70A controllers

1 x venus GX

6 x Pylontech 3500 - set up in two strings of three

24 x 335w solar modules

[image]

Am I able to charge a 48 Volt battery bank (Four 12V batteries connected in series) with two 12 volt solar panels with a 75/15 MPPT charge controller in between?

Hi - If somebody can help on this.. If you see below my battery is on float state and reading shows 54.9V. But the setting in the configuration for float is 55.2V. But the charge never goes beyond 54.9V and its always charging. When I check the voltage at the battery terminal its at 55.2V.

Is this an issue if its always charging or why does it no go beyond 54.9. The distance between the battery and the Easy solar is less than a feet. How do I correct this?

[image]

Can I use two different size batteries together without any problems? One battery is 170ah and the other one is 100ah.

I need advise on what battery setting to be do be done in VE Configure. I have an Easy solar 3000/48 with ESS enabled. I have 4 x 12v/200 AH flooded tubular batteries (Exide Indian brand) which are not listed.

What option needs to be checked in this list... Flooded tubular plate or No corresponding defaults

[image]

I am just wondering when the minimum battery voltage reading is taken because when going to sleep and all loads off, the controller shows say 12.40. On checking up the following morning at 7 o'clock, the minimum shows a higher figure say 12.57. What happened?

[image]

The numbers seem pretty unbelievable. is this a system fault or what could have caused this?

THanks for the help!

I have a 1000 Ah battery bank and have connected a Victron Multi Compact 12V/2000VA/80 Amp. On the battery poles I get between 50-100 V AC,

When disconnecting everything on the AC side, the AC on DC side dissapears, but hanging a loose 30 meter electric wire to the AC side of the system (wire only, no load), I get 50 V AC. With 300W load, I get about 100 volts.

Wires are 35 mm2 and the device is properly grounded.

1: Any idea what is wrong?

2: Will this dammage my batteries?

Hoping for answer :-)

There does not seem to be a clear answer on here for this. Manufacturer is not supplying information. Victron deep discharge 2 seems to be the best option.

Good day

I have a issue with a Colour Control showing a SOC of 42% even though the battery voltage is 55v on a 48v system.

Setup as follows:

Quattro 48/8000, 4 x Victron AGM200Ah 12v batteries in series, 2 MPPT 150/85 with 7kw of panels and a Colour Control.

AC in connected to mains, AC2 connected to generator as backup.

All units updated to latest firmware.

System is used as a backup system and I want batteries ideally at 100% - excess PV power must go back to my factory grid.

VEConfig settings:
General: Battery monitor set to 85%, 200Ah capacity and 0.8 efficiency. Dynamic current limiter unchecked.
Grid: Country:other (to allow excess PV back to our factory grid.) and LOM both on type b.
Transfer switch set to accept wide freq range and default values.
UPS function unchecked.
Inverter set to 230v, ground relay checked, power assist unchecked,
DC input set as 40, 46.4 and 47. Shutdown on SOC unchecked, enable AES unchecked.
Charger: Enabled , all options unchecked, Settings at 57.6v, 55.2v, 60a, 1 hr, 7 days, 8 hours.
Virtual switch disabled.
Standard ESS assistant installed and set to 200Ah capacity and default settings.

Colour control settings under ESS
Keep batteries charged, grid tie meter disabled and feed in excess solar checked.

I recently installed the Victron batteries and updated the system firmware and changed from using Hub1 to ESS. Updated the MPPT settings to AGM batteries.

I suspect it is battery settings in VE config causing the SOC issues.

Do I even need an ESS assistant ?

Any advice on setup welcome !

Hi.

I believe my xantrex battery charger inverter may be sending a dc power spike through my 12 volt system. I have 2 x victron 50/100 solar controllers who don't capture this event in their battery monitoring capture history. How often do these controllers test the battery voltage levels?

Hi.

From where does the 100/30 get the battery voltage shown in the Status Dashboard? As I do have a difference of 0.2-0.3V between 100/30 and real measured voltage at the battery itself (battery voltage lower) I guess that there are some algorithms working within 100/30.

Is this the right understanding?

Thanks for a quick answer.
Holger.

I have 2x6 V batteries with 232 Ah capacity setup in parallel to give me 12v in our travel trailer. I'm fairly sure I have overcharged them in the past and believe their actual capacity to be less than the 232. I installed the BMV 702 to both understand their actual capacity and guard against over or under charge going forward.

I've been testing the setup at home before we go dry camping. Running the heater and fridge and some lights over 8 hours or so, I pulled 23 Ah at a max draw of 5-6A. The battery got down to about 12.35V and the SOC showed 93%. My limited understanding is that 12V batteries shouldn't cycle below around 12.3V. If this is the case then it seems 93% is not correct. It also seems like my batteries are actually compromised in that they come nowhere near the 232 Ah.

I may be missing some factor in this and would appreciate your insight.

Thanks