Hey Mike, REC is pretty good about sharing this info so by way of this message I have included Tine in the thread and hopefully he can help you here. @Tine Andrejasic 

With recent upgrades of the Venus/Cerbo firmware to 3.3X and REC-BMS 2Q Firmware 1.5 the REC 2Q BMS will now work properly on the Victron VE. CAN port instead of using the BMS.CAN port.  This ...

Hey guys.  I have a two battery (electric boat) that uses a REC master and two slaves.  There are no LED lights anywhere even though the master has 61VDC.  Desperate, I took apart th...

A full reset, completely powering off the REC, resolved it.

Yeah, it's still not happy: I don't see any packets there, from the REC, eh?

@Rick I figured that… I reset CHRG to 1, CANS is still 3 which I believe to be correct for the Cerbo's 500 kbit CAN-BMS port. Still nothing, unless I need to reset/reboot something to get t...

Try resetting the CHRG and CANS parameters.  Details are in the new manual on the rec-bms-na.com site

Any idea why I would have lost the CAN comms between the BMS and the Cerbo GX when I upgraded to firmware v1.5? I didn't change anything else. A.

Here is some feedback from REC engineering that may address your challenge while giving you a level of system redundancy at the same time.  Hope it helps I would go with 2 parallel systems.&n...

Here is something that may help.  I havent had a chance to check it out myself yet. ## PLACEHOLDERS Use __BACKTICK__ to use placeholders that are listed below. You can type in a __BACKTICK...

@Rick awesome, do you have any details on how and what to query the wifi module?   is there a list of URL syntax? i just want the individual cells, temp, amps etc

Sure, you can query the Wifi module or use the RS485.  The RS485 protocol is covered in the manual. I have a request in to enginerring for a list of http variables available and will post it ...

Has anyone played with getting data out of the ABMS either via RS485 or via Wifi module web server queries to home assistant. ideally, I would like to get realtime battery health and individual ce...

Good day everyone, I hope all is well.   To begin with, OGM staff please note this is a rough duplicate of a contact form I submitted. I realized after submitting the form that posting here...

Check out this one.  It may assist with many of your queries. And don't forget, these are all available in editable versions too. https://rec-bms-na.com/system-design-ideas/#48-50-wpfd-marin...

Greetings all. I am configuring and integrating a LiFePo4 stans alone 3P4S 12V (942 Ah) with REC Active MBS w/wifi and precharge in my current system which I describe at the bottom. I am looking ...

Yes, it is a high-voltage system. Nevertheless, it should be possible to reach the two slaves. So far without success?

for most operations you connect to the Master to retreive all slave parameters, not to the slave.  Only things like slave firmware updates .  I see that your pack voltage is 104 volts so ...

Yes, the green light is flashing on the slave. I've tried more settings. It doesn't work.

are the green LEDs on the slave blinking about once a second? Are you using addresses 16 and 1 to try and connect?

I'm trying to establish a connection with the slave using the software. Unfortunately, without success. Can anyone help. I can't reach the slave, address 1 and 2 are not recognized. What's wrong he...

@Trevor really strange.  I have 2 setups running with 2.94. Non off them have any problem. suggestion to test, with 2.94. under settings/manual communication. Type address: 2 Type command:...

Cool! It sure looks a bit more professional than my relay interface boxes that does more or less the same thing. When do you expect to have this on the market?

@Sturla The "Quick connect TBS" is a new product, not yet on the market. Some functions: -connect bms, 4 wire only (ATC+, ATD+, + and -) -Connect easy 2 TBS relays -connect a remote panel, whic...

@Ben I relly like this install!  One question; What is that TBS "quick connect" box? Link?

@Johan For the ABMS, firmware 2.94 Main relay, can be set for ONLY Low voltage protection, program MODE at 2. (parameters under settings are used) Main relay can set for LOW and High voltage pro...

Rick, Thanks, but I would be able to use both main relays? and set both relay parameters for open at low cell voltage? Then I would only need one Opto relay for the third Tyco with use of an relay ...

Thank you both.@Trond Røsvik, your diagram is how I had both shunts before removing the alternator positive shunt. I had the wakespeed sense wires on the alternator shunt too.@Ben , I'll get...

Using the Wifi module and in the Tasks section you should be able to configure a different dropout voltage for each.  You should have 1 available relay that will drive the Tyco directly and y...

Did you try changing the CANS parameter to 2 or 3?

@Ben Thank you, I tried again this morning and when I successfully install 2.94 the REC disconnects from the Cerbo, I don't know why. I switch back to 2.93 and it works perfectly.

@Johan holding power 0.13, but switching ON power?   Maybe others in this forum  have experience with switching Tycos. I don't like relays that use 24h day 0.13amp.   The ABMS, ...

Hi, The Tyco relays 9-36V use 0,13A Holding current. I want to set differnt UV settings on all three relays if possible. I also have one Pre-charge unit.

@Johan page 4 from manual mention, the internal relays can do 0.7amp. Check how much current your Tyco relays use. You can also have REC, BMS switch on 1 Tyco, and the other 2 Tyco, switch on by ...

Hi, Can I have three Tyco power relays (12V) connected to three differnt discharge busbars that shall open on Under voltage? Which relays in the BMS should I then use?  

Good clarification on this Ben. I think Trevor misunderstood your CANS (CAN speed) reference and thought you meant device address. Trevor, your CANS parameter should be set to either 2 or 3 depen...