It looks like you have a pretty big cell imbalance problem.  I see that your balancing ends at 3.58 but you stop charging at 3.53, which is part of the issue. If it were me I would adjust my ...

I'm using my REC Q BMS with 560 Ah at 48 volts, 32 LiFePO4 battery's total. 100 amp Inverters. 2, 100 amp charge controllers, I've been getting this Cell Voltage differs more than set error. If any...

Thanks for sharing Jonny and a shoutout to Trond @Trond Røsvik  The only time that should happen is if your USB is connected, as the WS500 thinks the ignition is turned on, which start...

On the more recent version of the precharge module there is a board mounted fuse that might be the problem.  It will be black or grey and about  1.2cm (1/2")square and may have a glob of ...

@Rick-admin  

After replacing my alternator (see recent posts) and updating my firmware to the latest 2 contactor version, my system was working fine. However, My system stopped charging via the alternator and s...

Problem solved!.Have now solved most of the problems with regulation with good help from my supplier Trond at Farco. Pulsating regulation occurred due to NMEA conflicts, which I suspected in the fi...

@Sturla I was able to reload the previous firmware update throught the cable and software. Tine got back to me and said I should have been able to re-install with the wifi module, but I could never...

FYI -- the CHRG setting (CAN protocol) gets reset on firmware update and that was the reason I lost communication.

Just did the same mistake...  @W did you get any instructions on how to fix? I have cable and the pc program.

Long time ago this posting is done. I don't have an answer. But more a related question. I would like to install a bi-stable relais.  I was think about:  https://www.whisperpower.com/rem...

Thanks!

Your settings should be retained and if the new FW version has new parameters they will be set to the standard default value. After an update the BMS will power cycle so make sure you have the wi-...

Does anyone know what happens to the REC BMS settings when the firmware is updated?  And more broadly what happens if the firmware doesn't install properly? Does the firmware carry over settin...

Hey Jonas, There is currently no bulk delete option and your solution was a great idea. I am including REC engineering in this reply so hopefully they can add it to the feature enhancement wish l...

Since there were more than 200 log files I gave up trying to delete them using the WiFi web interface. After I had shut down both the BMS and the WiFi module I removed the MicroSD card from the WiF...

Hi I just updated the firmware to version 2.92 (bms_1A_Victron_v2_92_1_tasks.bin). The update seems to have worked fine and I can see that the new firmware is loaded by the ABMS. The update was do...

Still having the same problem with pulsed charging. Now testing with REC fw 2_53 (volt regulation) and WS fw 2.5.3. Have deactivated RPM and now use RPM from nmea, as well as changed the feature i...

30 days of data. Does anyone have an idea why my CCL and CVL values are moving around when charging my batteries?

I have now tested charging over time and I definitely have something unstable in the system. Not sure what the cause is, but sometimes when I start the engine it regulates according to DVCC, other ...

Asking about REC ABMS.

Sorry, I couldn't figure out how to start a new thread. Can anyone advise me of the format of the rs485 message that responds to "LCD1"? I know it is 7 float values as defined in the manual. ...

Ok...  Maybe if I give more detail in how I've hooked it up... White is to + of the power supply (set at 13v) Brown is to - of the power supply Pink is to + of a simple LED Grey and Green ...

I just purchased a BSLRD. I can't get it to work with my relay.   I've hooked it up to a power supply but there are no lights to indicate that it is powering up. How can I test it using ...

Hello, it now worked normally. It was the wrong firmware on the slaves. I flashed it with slave firmware 2.3 and now it works. If the master cannot find a slave, it will not communicate with the ...

I use Adaptive Idle Pullback and dont have this issue. PBF value 8 and Engine Idle 1200 RPM.   My bet is the "RPM -> half power mode" is causing problems.   

ok, you will need to contact your dealer and request the slave version.  We don't have it posted on our site yet.  If we are your dealer, please just send us an email request to support@o...

I think i have a standalone firmware. The lights continue with flashing with connecting to master Yes adress is different 1 and 2

Do your slaves have slave or standalone firmware?  A slave will flash red/green then go out until the Master connects Did you set the slave addresses to be different?

How can i clear the error? I have connected 2 BMS 2Q correctly. Is the Slave firmware wrong? FW: 1.4 I also tryed with 1 Slave.

you will likely need to clear the comms error before it will communicate, so connect one slave and try again

Hello,i have a problem with my Master device. The Wifi modul and the PC-Software can't reach the Master. (Adress 16).Wiring is OK. (and original)My BMS 2Qs (i have more) works fine with both. (Wifi...

Thanks for Sharing Jonny, this is great feedback. Rick @Tine Andrejasic 

I have now tested a bit with REC firmware 2_92 and WS firmware 2.5.3.Based on the analysis of data at low current <50A and it regulates up and down, I see that the RPM goes from 0 to 2300RPM (th...

Thank you so much for the offer of assistance, @Rick-admin ! I did end up grabbing a spare bms from ebay for a good deal. Tine did get back to me though and offered up a fix that requires the PC s...

We are currenty making our way back home and dont want to risk changing too much with beta software at the moment as we rely in it to work.   Besides. I do not have the problems you describe...

Tine sent me firmware v2_93, but I can't get DVCC to work, even after a full restart of all devices. When I go back to v2_92, DVCC works again. I have sent an email and am awaiting a reply.Tested w...

I have discussed this with Tine and he is tweaking the FW to see if we can help smooth out the cycling of the dynamic loads. @Trond Røsvik are you interested in testing this update? Best, ...

@Trond Cells are perfectly balanced and copper rails between cells. Works well at power above 50A. Is in dialogue with REC, which confirms a challenge with current regulation. What I now use is vol...

Then I suspect rhe BMS is detecting an imbalanse issue, possibly due to long cables between cells?    Monitor the high and low cell voltage from the BMS while charging at full power.