Is it possible to run a Victron/Wakespeed/REC Q system using a string of 9 (or even 10) LFP cells?   it would require that the MPPT,  Inverter/Charger, and alternator all be able to put ...

mine is my username at gmail .com If you want to send them over. I sent REC an email but still waiting, but would be nice to review the manual for any changes. Thanks!

You bet, and it seems pretty solid too. https://www.offgridsoftwaresolutions.com/ws500-user-forum/topic/rec-bms-wifi-firmware-update-1-6-now-released/

FYI .. 1.6.0 is out now ....

Yes, V2.8 comes with an updated manual. If you have an A-BMS, send me your e-mail some how, and I will send the files to you. Don\'t want to post my e-mail here in case I get flooded with req...

Quote from Trond Arvid Røsvik on September 27, 2022, 1:05 am Just want to add there is an huge improvement in the A-BMS V2.8 on how the charging is regulated. No more jumping up and down of the...

Hi AL. Yes I am running WS500 V2.5 and Venus OS V2.90 already.   That hardcoded overvoltage used to be 16.2V in 12V system. I know, as I have an client with 3.7V nominal cells, he ...

Trond Arvid, That is such great news to hear -- we can do only so much \'in the lab\' even with live test benches, to hear your comment from actual field install is really nice.  Thank you (I am...

Thanks Rick for making the video. This helps a lot. So it looks like that the sequence after the boot piep is normal and counts the number of found slave devices. You have two slaves, so it b...

This is the settings I am using. (4S 1000AH Winston). This gives \"Bulk/Absorption\" 14.2V and Float 13,5V, same as Victron recommendations.   \"cmin\":2.8,\"cmax\":3.8,\"tmax\":55,\"...

Just want to add there is an huge improvement in the A-BMS V2.8 on how the charging is regulated. No more jumping up and down of the current in last phase of charging.   Just be aware...

Thanks for the explanation. I\'ve reached out to them. Thank you!

This is what my demo unit looks like during startup.   The bright green LEDs at the end are the contactor enable relays.

BMS firmware is updated only rarely, and is serial# specific, therefore it can not be added to the site, but needs to be requested directly from REC head office.  You will need to send them your se...

@rick_tech_support Will BMS firmware updates be added to the site?

You beat me to it.  With the new integration of the WS500 it now needs to be connected on the VE port.  Previously we were recommending it be on the BMS port so that it was hardwired to talk direct...

Hello REC Community, I have a REC Master Slave config with one 9M Master Unit and three slaves. (Large Li-NMC 48S / 20kWh system). https://www.rec-bms.com/rec-bms-master-unit-9m/ Everything ...

Yes, there is an V2.8 out now. But I don\'t think you will find it online. Contact your local REC dealer.

Any firmware updates? I\'m getting my wifi adapter updated but was curious if there was any new firmware for the BMS. Its about a year old and wondered if there was anything new (don\'t see any fil...

Quote from Derek Dickson on September 23, 2022, 7:02 pm Did you figure this out? I had this problem as well and i needed to lower the balancing voltages. I did not, what did you lower the bala...

Sounds like a nice system Stefan.  The firmware is keyed to your Masters serial number, so that has to come from REC head office.  You will need to contact tine@rec-bms.com along with your Master s...

Hi, I have a Sungrow SH10RT inverter and purchased a Master Slave REC configuration. One Master and three Slaves for a 48S Li-NMC Configuration which is at the end 170-180 Volt for the high voltag...

Quote from Adam Sherman on June 7, 2022, 6:23 am Quote from Trond Arvid Røsvik on June 7, 2022, 2:17 am Yes, but did you activate DVCC like its described in the REC Manual? Does your victron...

Doh, answered my own question. It\'s right in the Wakespeed portion of the Cerbo manual https://www.victronenergy.com/media/pg/Cerbo_GX/en/wakespeed-ws500-support.html: 13.2. Requirements ...

Hey group, I plan on installing the REC-BMS in my camper van once it arrives but am curious regarding the use of the BMS-CAN port. I know that the REC and Wakespeed can be set to 500kbps so woul...

as I recall that just limits the field output.  Check out the BMS capacity rating setpoint from page 55 of the manual BMS Amp Cap: <WHOLE NUMBER ( 0  2500 ) > BMS Amperage Capacity (<B...

But changing the derate normal value would actually meter the output?  I\'m not sure I understand the amp cap parameter

The problem with capping the amps out of the reg is that you are not actually metering that value. but in your situation it may actually work in your favor as you are not trying to cap your output ...

Thanks Ben, I am pretty close to those settings; CPA I am using 420 minutes and 3A for exit A CPO and CPP all zeros CPF close with 13.5V Will test all this soon One more question: wh...

My answer was ONLY focus on your question to solve unstable float voltage. Therefore I copied the standard firefly profile. Copied completely from the pdf. But only this lines are the charge p...

Trying to fix a problem where the amps are going over 105 which triggers the bms cutoff and a constant start stop cycle of charging, if I put a load on the system it never cycles, reading the confi...

As to Max A in Float, 5 A is the default in the tool.

Looks like there is an added field in CPB to set max V with 2.5 but it isnt adjustable in the config tool, or at least I cant find it.

  can only study exactly what goes wrong, when you post a full log, and point to the exact time where something goes wrong. Ok. Will do next time. I used excerpts to reduce the pages ...

If you use the graph on the first page of the ws500 config tool you can click on any one of the 4 chart inputs on the left and display any parameter coming from the AST string.  I would suggest add...

Its probably caused by the BMS, but we cant tell by looking at that graph. I believe you can get the \"max charge current\" graph from the BMS up there as well. A-BMS FW 2.8  and WS500 FW2.5 ...

I can only study exactly what goes wrong, when you post a full log, and point to the exact time where something goes wrong. At your posted log, I see, regulator goes in float, and go to 0% field...

Hi all Any idea why my alternator output would pulse??? Dropping the current from 100A to 60A and then back up to 100A. I have current set the max charge current to 100A until I get some new ...

Just finished a long run down the coast. Issue I am having is WS500 sometimes transitions to correct target FloatV with steady Field% and at other times tries to hold a lower V, with constantly var...

You could get the REC WIFI module.   Would be cool if you could download and upload config over VRM for Wakespeed. Should be easy to integrate, but I doubt that will happen. I know...