Hi

I purchased a 2.5 kW BYD 3U battery module and did a fully charge according the datasheet. After trying to discharge the battery while logging the battery capacity, I found after 1550 Wh/29Ah that the battery bms cut off the battery when the voltage drop below 50.2V. Is there a way to change the cut off voltage to e.g 48V as obviously with current settings, I'm not even near to utilize the 2500 Wh capacity?

Hi Guy and others,

I've done a few dozen installations using the BYD / Victron combination (A multi with CCGX and 4 x 2.5kWh cells)but read somewhere about a new 'simpler' programming option. Can you enlighten me?

Cheers!
Diamond

Since half a year I have 3 Multiplus with a BYD L Box 14kwh
Connected with special Victron cable VE Bus from Color Control to BYD
Box Inverter input. Works perfectly. CC has contact to the BMS
and the controls are working. Now I have a 2nd box 14kwh and would like to
connect the BMS of the second box. According to the BYD description
a normal network cable should connect the two CAN bus connectors of the boxes
connect. Unfortunately the data of the second box does not arrive in the Color Control Display.
When I start the second box at the main switch, the first box switches off.
There is no communication between the 2 boxes and the Color Control.

I can't find the Discharge Current Limit shown anywhere for the 14kW battery bank. I have GX version 2.33 firmware and two batteries (28kW).

Please can someone advise what this should show and if possible where this is shown on a Victron web page?

Thanks.

Hi,

We have a system with a 10kWh BYD (4x 2.5kWh modules) where the discharge current limit is showing as 196A on the CCGX. All the previous systems I have seen show the discharge limit as 35Ax number of modules so in this case 140A.

Has there been an update recently allowing a higher discharge rate?

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.

[image]

[image]

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?

Hello,

I Have EasySolar 48V/3000VA with the two BYD Batteries 2,5 kWh 100 Ah. I set the Absorption voltage to 55.2V and float 55V as in BYD manual, MPPT 56.5V. But my system never goes to float phase, allways in Absorption. Can I make some change and improve this? Thanks a lot

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.

Hi all

So lately I've noticed while my batteries are recharging in the morning that SOC jumps from 82% to 99% pretty much instantly.

BYD B-Box 10.25 v4.22 firmware

SmartSolar Charger MPPT 250/60 v1.39 MultiPlus 48/5000/70-100 v433 CCGX v2.33

[image]

[image]

This has happened the last 3 days in a row...

[image]

Any ideas why this may be the case?

Thanks!

I have an existing Off-Grid-system:

MPPT 150/45 (updated) --> VE.direct
MPPT 150/70 (updated) --> VE.direct
BMV 700 --> USB
Multiplus 48/5000/70 (updated to V460)--> VE.Bus
ColorControl GX

I changed the batteries to a new BYD B-Box Pro 10.0
All necessary parameters I programmed before changing the batteries.

After starting the BYD-Box the CCGX starts but all devices appear except the B-Box Pro. Because of that the batteries shut down after a while caused by no data connection.

The cable is OK.

What is missing to get appearance of the BYD- Battery Box ?

We experienced High Battery Voltage Alarms on 2 Multiplus 48/5000/70 systems.

Settings:

- mode "Keep batteries Charged'

- both in Absorption mode

- Absorption voltage set to 55.2

However, with both systems the battery voltage went up as far as 58 V, triggering Alarms which cleared after about 3 hours, when voltage went back dropped back to around 55V.

What could be the cause of this?

A customer wants to have his PV installation working ok and have electricity in his entire house, even if a power outage occurs.

I am planning to connect the mains to the AC-in and all the distribution board to the AC-out of a well dimensioned MultiPlus-II. Also install PV panels, MPPT, BYD battery, Venus GX and an energy meter.

Will this ESS system provide backup and normal performance even in the event of a power outage?

I am not sure all Victron devices will continue working with no grid power, but with sunlight and energy in the battery.

Thank you!

Noob here... worried I have not got things set up properly.

Easysolar 5000, BYD 13.8

I am confused RE SOC instrumentation....

Supplier, Wind & Sun, say if I want to use DC I will need a battery monitor, which if the SOC is coming from the Multiplus make sense, but if the BYD box is providing SOC, which is how I have it configured now, then I dont understand why this would be the case.

Not suggesting they are wrong but would like to understand...

Part two of this question is about VEConfigure settings.

At least one of the manuals I have seen, sorry no idea which, there are so many but a BYD one I think, states that the SOC option should be ON when selecting Lithium from he general tab, however I cant work out what settings to apply if I set this and I thought that the B-Box was controlling things anyway... Suggestions?

I need educating and any help would be appriciated.

Good day

The system is as such:

Three phase 10kVA Quattro inverter system coupled to 8x 2.5 BYD B-Box bank (20kWh).

My question is what would the appropriate battery fuse be between the inverters and battery bank? The quattro manual states 400A, but to my understanding the BYD cells can supply 35A per cell, that is 280A.

Will one 400A fuse disconnect between the battery and inverters be adequate?

Thanks

Hi folks,

I will be hanging new PV tomorow morning and would apriciate some input.

I have a new Easysolar 5000 hooked up to a BYD 13.8 kW Lithium pack.

Obviously I will set the MPPT as directed in the manual, which I havent read yet, but I am also aware that the BYD battery manager, via the CCGX is going to 'manage' things.

What I dont know is how it will manage things, what I should look for to establish that all is well and if I need to make any changes to the MPPT settings, which I assume I will.

My supplier told me I needed a programming cable, USB to VE Direct I think, which I have but I havent found what I should be doing with it yet...

I still have manuals to read but the BYD manual dosnt mention MPPT settings, speciffically, and thus far I am unsure what software I need to program the MPPT in the first place. In addition The manuals for Victron kit havent, so far at least, been speciffic about BYD kit and I am not expecting the MPPT manual to be any different.

Am I correct in assuming I unplug the cable to the CCGX to program the BluePower and if so is VEConfigure what I need or something else.?

Any help/pointers would be appriciated. I am pretty sure there is potential to get this wrong and I would rather not do that, damaging 6k's worth of battery because I used the wrong setting is not a place I want, or can afford, to be.

Thanks, Al

Hi all

Looking for a bit of help. I have the Easysolar 48/5000 with the BYD 13.8 Lithium Batteries.

I have connected a generator to the system for charging the battery. I have two genets one is a 2000w and the other is an 8500w and both are AVR.

Here is my config on the Multi (the 26A is for the big genset i was using 6A for the small one):

TAB: General

System frequency 50Hz

Shore current 26.0 A

Overruled by remote unchecked

Dynamic current limiter unchecked

State of charge when Bulk finished 95.0 %

Battery capacity 270 Ah

Charge efficiency 0.95

TAB: Grid

Country / grid code standard None: (feeding energy from DC to grid not allowed)

Accept wide input frequency range (45-65 Hz) checked

AC low switch mains off 180 V

AC low switch mains on 187 V

AC high switch mains on 265 V

AC high switch mains off 270 V

UPS function unchecked

TAB: Inverter

PowerAssist checked

Assist current boost factor 2.0

Inverter output voltage 230 V

Ground relay checked

Inverter DC shut-down voltage 47.00 V

Inverter DC restart voltage 51.00 V

Low DC alarm level 53.00 V

Do not restart after short-circuit (VDE 4105-2 safety) unchecked

enable AES unchecked

TAB: Charger

Enable charger checked

Weak AC input checked

Stop after excessive bulk unchecked

Lithium batteries checked

Use equalization (tubular plate traction battery curve) unchecked

Charge curve Fixed

Absorption voltage 55.20 V

Float voltage 55.00 V

Charge current 26 A

Repeated absorption time 1.00 Hr

Repeated absorption interval 7.00 Days

Absorption time 1 Hr

TAB: Virtual switch

TAB: Usage

Virtual switch usage Do not use VS

TAB: Assistants

TAB: Assistant Configuration

Two-signal BMS support (size:139)

*) The battery is full when Auxiliary input 1 is open and

the battery is empty when Temperature sense input is open.

*) Force to float and set SOC to 100% when battery full and switch to charger

only when battery empty.

(note: I believe that the second part of the assistant needs to be changed as it would only use float while charging)

I set the config from this page on the Victron website HERE

Total size of all assistants including the required

(hidden) system assistants is: 198

so before I added the assistant the small genset would charge at 700w.

The big genset would charge at 1200w

[image]

After adding the Assistant and updating to the config above I got this.

Which is the same but seem to charge faster about 3-4% in 15 minutes.

[image]

Sorry could not get the images to rotate even turned one upside down but still uploaded upside down.

All firmware is compatible in the system.

My question is why does it take so long to charge the battery with the latest config and why am i only get 1500w and not 6000w? or is this normal?

Edit: Ok have just been talk to ALPS and noticed that SOC on the multi is switching from 100% to 67% for a second then back to 100%

Any info would be appreciated.

Good Day,

I have been trying to figure out which device is limiting charging current in below setup. There is some magic 3700 watt somewhere hardcoded or configured in my setup but so far I could not yet find it.

status during scheduled charging:

[image]

Device list:

[image]

Byd 4x2.5kw B-Box device parameters

[image]

I face this 3700 magic number limit everywhere....

1. during sunny day PV max output seen as ~3700watt in MPPT 150/100 (despite panels are rated as ~5kw).

2. Multi compensates rest of the consumption from grid when energy usage (output inverted) is higher than 3700kw despite the battery is full and rated as 140A.

3. At last today I realized that when I schedule a charging in ESS setup, to fill the BYD 10kw cells in early morning, again the system transfers only ~3.7kw max to the battery .

I upgraded all components to latest version in last couple of weeks (multi to v460, ccgx v2.33, mppt v1.42, also using updated version of ESS assistant ) but nothing changed.

Battery and system is located quite cool dry environment with max temp of batteries goes up to 29C and its 230V system. Any guess?

Hello Guy (as this will probably target you :-) ),

we run several off-grid BYD B-Box/Victron combos.

Cold weather charge performance required me to switch off DVCC for now ... since we cant

recharge our batts properly if its temperature drops below 13°C.

But i got no good feeling having DVCC off. Especially since the allow to charge/discharge contacts arent wired.

Unfortunatly i got no reponse from BYD so far, as to what firmware changes regarding this topic they might have made for the b-box. U meantioned in your BYD/Victron manual that they did make some changes. Do u have info on that?

overruling the charge limit via a CCGX option would resolve it all ... but guess thats not in victrons interest?

I have been living off grid for 10 years
Using solar panels and lead acid batteries, I have never found buying equipment and installing it very difficult. Panels, regulators, batterys, cable, breakers etc.

I now want to up size the system change to Lithium batteries and and have a backup Generator. I am completely confused about the batterys thay seem to have become more like computer networking than wiring + - to a regulator.

I do not feel confident that I have not missed something when making my shopping list for my new system, .

I was hoping that someone my be able to cast there eye over the following list to try and spot any problems, equipment compatibility, special cables or even missing components etc.

48V Victron Easy Solar 5kW All-In-One Solar Solution With Inverter & MPPT Controller.
https://www.victronenergy.com/upload/documents/Datasheet-EasySolar-with-Color-Control-EN.pdf

BYD Battery-Box Pro LV
2.5 to 10 kWh.
http://www.windandsun.co.uk/media/1061521/byd-battery-box-pro-lv-datasheet.pdf


4x BYD B-Plus LV battery module 2.56 kWh inc cable set, 48V.
http://www.windandsun.co.uk/media/1061521/byd-battery-box-pro-lv-datasheet.pdf


Hyundai DHY8000SELR Diesel Generator Long Run.
https://www.sgs-engineering.com/amfilerating/file/download/file_id/1153/


I do not need any help with the pv panel side of things

Thanks Jake

Did a firmware update yesterday of a system with 2 x BYD B-PLUS2.5 & a MultiPlus 2 3kVA. I've noticed the BYD is reporting currents down to 0.1A (just the Venus GX running). Steps up to 0.3A (MultiPlus 2 running with no load). The SOC seems to be more accurate too. Previously I don't think it would resolve below 1A and the SOC would be inaccurate after being left overnight.

Just wondering if anyone else has noticed this?

Updates were from Alps Power site, BMU upgraded to v4.23, batteries to 4.12. All Victron firmware is latest.

Cheers, Matthew

Hello,

Is it possible to use the VE. Can Resistive Tank Sender Adapter in a system using a BYD battery if there is a Venus GX in the system?

Also has the second relay on the Venus been made available for use yet?

Thanks

I finish to update my BYD battery to latest firmware (after waiting for the special USB to CAN cable from them) so I finally plugged everything and was hopping to have it all to work.

We did the installation a few weeks ago with my PV installer, we did set up to date color control and inverter, and he setted up the victron inverter and color control configuration for them to be ready to discuss with BYD. As the battery was on a too old firmware, I had to wait to update them to latest firmware which is now done (BMU and BMS).

So I finally turned everything on. BYD is recognized by the color control, mppt is charging them, but when I turned on the inverter, it constantly disconnect and reconnect from CCGX.

here is a small video showing what's happening.

https://drive.google.com/open?id=10mD7_XbOBWotqNWOROvzGryRPYZCbU0l

https://drive.google.com/open?id=1-8XvPyB4O5LSNJLkdYXvojTK2sXcuJCP

Any idea what could be happening? How I could fix it?

Also, the inverter has a (quite) loud electrical noise. Is that normal?

Thanks,

Thomas.

2 x 150/100 MPPTs

3 x 10kWh Byd Bbox

Full sunshine today and client batteries only went up to 72%

This system is capable of producing 50kWh in a day. Please give advise as too issue.

Hi, we have an off-grid installation and have ordered 2 units of B-Box 10.5 LV batteries. After orderind we saw Victron blogs with next info:

[image]

Is that mean that the only way is to change the batteries for example to B-Box Pro? We plan to use it with Fronius Symo 15.0 + solar panels + Quattro 10000 (3 units) in 3 phase system.

Now we have next situation: when we turn on the B-Box L without any consumers it wors ok, after that we connect color control GX and it found the B-BoxL and show all the spec. But when we turned on th B Box L alredy with connected CCGX the battery goes into error.

So the question should we change the batteries? And why the similar B-Box pro is ok for off-grid and B-Box L is not suited?

Thank you!

Is there any Victron products available that will allow a 48v alternator as an alternate generation source to an existing 48v Victron off grid system and connect to the BYD CAN BMS?

Hi support,

Hope you can help me on my below inquiry.

[image]

The VE BUS is giving a low battery alarm while the battery voltage is normal in the BMS. See picture below. There was a high current draw event and after the VE BUS voltage started swinging low when the inverter mode kicks in. Any ideas how to resolve this? The system is a split phase with 2 Quattro's and BYD battery bank of 7.5 kWh.

[image]

Hello - I have just installed my 1st Victron system - EasySolar (MultiPlus 48/3000/35-50 ) + BYD (2 cells). The VE.Bus firmware is 413, CCGX firmware 2.20). I understand DVCC cannot be enabled until the VE.Bus firmware has been updated (and as stipulated in the Victron & BYD B-Box manual). Is this anything to be concerned about until such time that the firmware can be updated?

Thanks!

Hi

Can I ask a question to all the guys with intermittent Ve Bus Error 17 ‘s

Do you have a gx installed ?

And how are you all restarting the system after the error?

I have a colour Gx running the latest firmware 2.30 and 2 10kva quattros on a Byd b box setup

Before the error there is nothing to suggest why the master turns off

And I am able to restart the system on the VRM via the remote inverter on off

Regards

Mike

I have an easysolar 5000 installed with a 2.5kWh BYD battery for self consumption. When the battery is below 13 degrees the victron does not wind back the charge to the battery inline with the BMU causing a high charge current fault and then the battery shuts its self off. Any ideas what setting I have wrong??