A current shunt works by having a short length of thinner conductor and measuring the voltage drop in millivolts across, so you have to ask which side is \"more\" negative. And since the negative b...

Hello, for sending wires, what side is the positive side on a shunt that’s on the negative wire to the batteries only?

WakeSpeed has created several new wiring harnesses Hi current Extended length for Remote or Van/RV aplications Lithionics BMS interface More details to follow as information becomes a...

Thanks, yes if didn\'t connect pin 5 to 12v.  I had assumed that the 12v going to the BMS would handle that, but it only opens and closes the relay.  And yes Patrick, I was hearing the relay close ...

I haven\'t set any of the relays on the Cerbo yet.  As of now all I need for switching will come from the BMS to handle charge and discharge cutoffs.  Hopefully, if everything works as designed, th...

Rick, mine is different. No ground, case ground, and the stator out is in the plug. Wondering about the WS500 ground? Could potentially connect to the old alternator ground or ??    

hey Patrick,   Yes, we just started shipping them this past week.  Sorry we didnt reach out! We will post it to FB and Instagram this week.   Happy Easter!

Is the new WiFi Module in stock yet and ready to ship?

Thanks Eboat, I am up and running with the REC configured on the Cerbo. Follow up question, have you set up a trigger on relay 1 or 2 to switch based on the BMS SOC?  I could see possibly fooling t...

i ordered everything on the list you gave me but do i need a precharge unit?

additional pictures

Hello Eboat, Thanks for the reply. I will try this response once again. I did try as you suggested using the 250kb/s selection. I assume if it worked I would find the REC BMS on my device list? ...

Listen to the boot up of the BMS. When I do I hear 2 separate clicks indicating the relays are functioning. If that is working, Using the wires from the main connector, Tie pin 5  (fused input to r...

Here are some good troubleshooting tips for no voltage to contactor. (Re-posted from Tine Email:) Is the Discharge relay fused input connected to battery 12V and NO to the pre-charge BMS inpu...

You can in fact use the 500kb/sec CAN settings, but you need to change this via the control software: CANF 2

As the subject notes,  I cannot seem to get the BMS to send out any voltage to close my main contactor.  I am using a Pre Charge module and I have the lead going to Pin 4 wired to \"BMS INPUT\" on ...

Patrick,  if you look in the REC Active Victron/Wakespeed specific manual, there is a section that outlines the settings that you need to make to get it working.  One thing I did find is that the i...

Hello, I have recently integrated a Victron Cerbo device that provides a lot of usable information to the Victron products that I have connected to it. Can anyone discuss the steps I need to take t...

Hey Cory, This alt wires right up to the WS500.  You should have received the quick wiring guide but if not its available at this link. https://www.offgridsoftwaresolutions.com/wp-content/upl...

Hey Cory, the server is down and you will need to use the registration file we emailed you to install the key.  If you were not able to get it to unlock the app just let us know and we will get you...

Hello, I get an error that says i cannot connect to the application website. Check your network connection and try again. I ran the app as admin. Does anyone have a fix?

Hello, does anyone have any wiring diagrams or examples on how to wire the XT 170 to P harness. Just want to check mine.   thx.

Nothing is jumping out at me here Patrick.  My reference to battery pack cable lengths only applies if you have multiple groups of cells, like in a 2P4S 2P configuration.  Because you only have a s...

Okay, great. So sounds like the SI has no advantages whatsoever for my setup. Thank you!

Yes, it does. and no, the Wi-Fi adapter will only allow monitoring and configuration changes.

Does the Q series unit you have also have the \"\"soft\" disable your inverter and charger before initiating a hard relay trip.  In addition it has some cool PV logarithms.\" that you mentioned abo...

Same unit, different firmware!  And we stock the Q series, whereas we would need to send you the SI firmware to be installed using the PC software app, if you wanted the SI unit.

Unfortunately that won\'t be possible for me since my van already comes with two alternators from the factory, and they are both 12v and interlinked together (it\'s a 2021 Ford Transit). So I am st...

Thats fine, its why I mentioned adding a second alternator, possibly in the future.  Often you leave your factory alt. to maintain your cranking batteries but if you have a good sized LFP bank you ...

Thank you. Unfortunately my battery pack is 24v and my alternators are 12v (the van comes with two alternators and I cannot replace them or add a third one) so I am not sure the WS500 would be poss...

For your installation we would suggest the Q Series, as it includes both communications for the Victron as well as the WS500, should you ever want to look at upgrading or adding a second alternator

To follow up on this, for a mobile (Van/RV) installation that has a 16 cell LiFePo4 pack, Victron Multiplus 3000,  SmartSolar MPPT 100/30 and CerboGX, would you recommend the Q or the SI? Thank ...

Thanks Rick, Unfortunately because of the physical locations of the batteries on the boat, my charge/discharge cables are at different lengths. No way around that. They are 4/0 cables, which wil...

It looks like you have a good start on your project.  Nice one. Yes, you can cut the wires, but NEVER while the BMS and cells are connected, as this will damage the BMS. Try to keep all of yo...

Hello I am starting to build my diy battery drop in box. It is designed to drop into a 8D fiberglass battery compartment. I assume it’s ok to cut most wires to make the build a bit cleaner. I wi...

So it\'s only a firmware upgrade? Hardware is the same. That\'s great news.  

Sorry, I thought I had answered that in the original email.  If you purchased your unit recently it should be the same, it just needs to have its firmware updated to the new version using your REC ...

My question was more.... What is the difference between the 2 actual ABMS units. If someone has the non victron one, and you state it only works with the victron abms. What can be done. ...

Hi Kenny, The advantage is that the REC will treat the WS500 as a charging device and start to modulate it down as it nears a bank or cell full voltage condition. This has two advantages.  It...

What is the difference between the victron and non abms version of a REC BMS?   Posted on behalf of Kenny