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Regarding CAN bus regulated charging.

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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 have End of Charging at 3.55 and Cell Max was at 3.6. ... but i've moved it down to 3.5 now.

DVCC is activated

BTW .. Al & Rick at Wakespeed have been great at supporting me ..

I will apply the 2.5.0 today.

Where can i get the REC updated firmware and Release sheets ??

cheers ... from SV Tahnee Mara

Uploaded files:
  • settings.png
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 and Victron MPPT x 4 all CAN or VE connected.

With the alternator charging.. when i get to , around 98% SOC, the current still keeps creeping up until the BMS charge relay opens.

With my Solar and Victron chargers this does not happen.

I have reported this to Al at Wakespeed. He has sent the new firmware. ... but i am not sure if in need a Victron Cerbo FW update as a pre req,

also, I am on ABMS FW 2.6 where / what is 2.7 - cant see it on the REC site ?

thanks

 

Here are some settings you can try:

End of charging  AND Balance voltage END= 3,55V

Balance START voltage = 3,50V

MAX allowed Cell Voltage = 3,8V (yes this is high but you dont want to cut charge relay unless there is an critical situation.

 

 

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, wifi, LCD, Balmar XT170, WS500, Cerbo GX, Victron Multi's and Victron MPPT x 4 all CAN or VE connected.

With the alternator charging.. when i get to , around 98% SOC, the current still keeps creeping up until the BMS charge relay opens.

With my Solar and Victron chargers this does not happen.

I have reported this to Al at Wakespeed. He has sent the new firmware. ... but i am not sure if in need a Victron Cerbo FW update as a pre req,

also, I am on ABMS FW 2.6 where / what is 2.7 - cant see it on the REC site ?

thanks

 

Here are some settings you can try:

End of charging  AND Balance voltage END= 3,55V

Balance START voltage = 3,50V

 

MAX allowed Cell Voltage = 3,8V (yes this is high but you dont want to cut charge relay unless there is an critical situation.

 

 

Thanks for the input .... appreciate  it ...

What difference will raising the Balance Start V make ??... i thought it was best to lower it ??

CALB Max cell V is 3.65 .... i would be a tad nervous setting 3.8 ...

I have today updated the WS500 to 2.5.0 - i am at anchor now - but all seems good with a quick Engine / Alt / REC  test ..

.....

 

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 config guide.

 

Website should be updated perhaps early next week.

Uploaded files:

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 you really really have to.  Keep in mind that once you are above 3.5 V cells becomes very sensitive to upward voltage change, even with little current change as per the red line in this chart, so there may be occasions where if you have not balanced in a while, one or two cells will get out of the flat portion of the curve early and require some serious top balancing, especially on lower grade cells.  You need to let the system work to bleed off that extra capacity on those cells, but if you just perform a trip you will get into this endless cycle of trip/balance.

https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse3.mm.bing.net%2Fth%3Fid%3DOIP.kVyPodGVArkeR4R3rAerzQHaDZ%26pid%3DApi&f=1

Trond Arvid Røsvik has reacted to this post.
Trond Arvid Røsvik

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 even minutes, its not critical for your cells.

 

AL: The .dfu file file did not get uploaded?

 

 

 

 

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