See page 14+15 in the manual. I would prefere option #2.       1) Connect the ALT+ (Red) wire to a 12v source With this approach, the field power source is supplier f...

Here some technical details of the 48V alternator

My tests in the workshop were about 10v-12v for the field

Should be 56v to charge the LiFePo4 battery controlled by a rec q bms

How much is the output voltage?

Hi guys, I have rebuilt one of the two engines (Volvo Penta D2-30) on our catamaran and changed the previous 12V/115a alternator to a Mahle MG1 48V/100A. The internal charge controller has been r...

I\'ve seen a system 3s, 4p, no bridging between strings, and it\'s in balance after 4 years. Good cells are amazing Only way to do SOC control I know is using switched outputs on BMV712 to trig...

As I read the ABYC requirements there seems to be a need for an Alarm before disconnect, and possibly seperate charge and load bus control. It already seems to meet the temperature and charge moni...

Thanks for the suggestion, Damian.  The original SD card wouldn’t format so I swapped to a new, formatted card and got the same result.  I did use a 64 GB SD card and wonder if it is too large for ...

Quote from Peter Levick on August 6, 2022, 2:51 pm Hey Rick, On this topic, I\'ve encountered the SD card error again.   I tried removing and reinstalling the micro SD card and that didn\'t fix...

update since upgrading ... now HW:1.2  SW: 1.5.8 this all worked ok for me in previous releases. After unlocking ... I am trying to use the Manual Communications in the Firmware page ... just...

I use currently the VE-CAN port only, set to 250 kbps. A-BMS->Cerbo->WS500->NMEA2000 to the boat. This works perfect.  An bonus with this is sending Engine RPM data and A-BMS status ...

Quote from Trond Arvid Røsvik on August 7, 2022, 2:55 am I tried this, and Cerbo sees the WS500 and ABMS, but the WS500 would not see the ABMS. Are you sure your WS500 is in Sync Mode?  ...

Quote from Trond Arvid Røsvik on August 7, 2022, 2:58 am Quote from Matthew Parsons on August 6, 2022, 11:47 pm I have a question - my ws500 is hooked up to my cerbo, I can see it in the device...

Quote from Matthew Parsons on August 6, 2022, 11:47 pm I have a question - my ws500 is hooked up to my cerbo, I can see it in the device list. Its controlled by the REC BMS using DVCC and seems...

Quote from Damian Raffell on August 6, 2022, 5:58 am Quote from Trond Arvid Røsvik on August 5, 2022, 3:31 pm At 500 Kbps the Cerbo will not \"see\" the WS500.   My Cerbo acts as a CAN...

I have a question - my ws500 is hooked up to my cerbo, I can see it in the device list. Its controlled by the REC BMS using DVCC and seems to work great, the only issue is that I can\'t seem to ...

Hey Rick, On this topic, I\'ve encountered the SD card error again.   I tried removing and reinstalling the micro SD card and that didn\'t fix it so I swapped to a new SD card and the problem re...

Quote from Trond Arvid Røsvik on August 5, 2022, 3:31 pm At 500 Kbps the Cerbo will not \"see\" the WS500.   My Cerbo acts as a CAN hub for the WS500 and the ABMS (they connect individual...

In my experience all units have to be on 250 Kbps. At 500 Kbps the Cerbo will not \"see\" the WS500.   Meaning you also have to use VE-CAN ports, as BMS CAN port is 500 Kbps only. ...

OK - I have upgraded my WS500 to 2.5.0 & my Cerbo GX to 2.90-14 I cant see any Wakespeed info ? I assume it should show up in the Device list. The Bus is working fine between GX, ABMS &am...

Thanks Rick, somehow missed the mention of the configuration mode. I have the crossover cable and the terminators and will install the new shunt to just measure the alt current!

Damian: Having an low \"start balance\" will only make the charging prosess longer. As Rick says, recomended working voltage is up to 3.65V Even if you do reach 3.8V for a few seconds or e...

Damian, Trond makes a very good point here.  3.65 V is the maximum \"working\" voltage, but the maximum safe voltage is usually quite a bit higher.  You do not want to perform a hard trip unless...

All,   Wakespeed WS500 ver 2.5.0 was released Monday -- but it might take a bit to get posted to the website.  For all\'s convenience, I have attached the .dfu file and the companion con...

Quote from Trond Arvid Røsvik on August 3, 2022, 9:19 am Quote from Damian Raffell on August 2, 2022, 4:26 am I believe i am experiencing something like this as well.... ? FYI. I have ABMS, ...

Quote from Damian Raffell on August 2, 2022, 4:26 am I believe i am experiencing something like this as well.... ? FYI. I have ABMS, wifi, LCD, Balmar XT170, WS500, Cerbo GX, Victron Multi\'s a...

Thanks all for the Feedback. FYI ... i have 4S8P CALB 100\'s I figured it maybe my REC settings and have since tweaked them. I have posted the current settings for review. I did originally...

To Damian: If your HV relays opens, there is a cell to high in voltage. I agree with the things Trond says in previous post. Also post a screenshot from your cell Voltage levels just befor...

Quote from Damian Raffell on August 2, 2022, 4:26 am I believe i am experiencing something like this as well.... ? FYI. I have ABMS, wifi, LCD, Balmar XT170, WS500, Cerbo GX, Victron Multi\'s a...

Wakespeed firmware 2.5.0 is being released this week; and has some improvements - but there still might be work needed on the REC side for its requests, as well as refinements how the REC BMS is co...

Thanks for the feedback guys.  It is looking more like everyone does indeed have the 1.2 release version boards.

I believe i am experiencing something like this as well.... ? FYI. I have ABMS, wifi, LCD, Balmar XT170, WS500, Cerbo GX, Victron Multi\'s and Victron MPPT x 4 all CAN or VE connected. With t...

I too have just updated from HW:1.0  SW:1.5.1 using the 1.2 files now says HW:1.2  SW: 1.5.8 All looks ok.

He is not active on this forum so email is best tine@rec-bms.com

I see. Do I reach out to Tine directly over the forums or email?

In another post somewhere Tine mentioned that they can custom configure your spare opto output to do that for you for about 25 Euro as I recall.  This is not a new feature.

When there is no battery voltage they do a reset every 30 seconds or so.  If you need it to stay on you can put 12V across the battery +- wires or put it into \"Config\" mode with a command.  You\'...

That makes sense. However I have the Q BMS. My understanding is there is some firmware version that lets me control an external relay and have it turn off when nearing low voltage, before the main ...

That\'s good news and tends to support my comment about you likely having the 1.2HW and the text was just not changed in the original build. You might want to run your electronics off of a separ...