openinverter forum

EV_Builder wrote: ↑Wed Aug 02, 2023 8:18 am Are the 50kwh packs 6S2P?

Yes

Interesting there are also 6S1P out there.

Clanarn wrote: ↑Mon Aug 01, 2022 3:19 pm I have a couple of MAX17841 interface boards left if someone is interested. 40eu.
Pm me for schematic.
max.jpg

Hello,

I'm jealous of you having such card, i'm looking for it since a long time and just discover this forum, I cannot send you message, maybe because i'm new user, so I will do it here in case you read it

@inaglasshouse
For your project with e-208 module, how is it going? if you need any help to configure voltage/power map dont hesite to MP me. I can help to ensure you keep it all safe

Goldveet wrote: ↑Fri Oct 06, 2023 11:03 am Hello,

I'm jealous of you having such card, i'm looking for it since a long time and just discover this forum, I cannot send you message, maybe because i'm new user, so I will do it here in case you read it

@inaglasshouse
For your project with e-208 module, how is it going? if you need any help to configure voltage/power map dont hesite to MP me. I can help to ensure you keep it all safe

Can't PM you either,

Open and good advice are always welcome if they enable us to use (or re-use) in all safety these modules. Do you have any recommendations, mainly voltage working range, current limits and derating when charging towards maximum voltge?

Thanks again,

PM only works once your first post was approved. This is to lock out spammers.

VWJoe wrote: ↑Thu Dec 01, 2022 10:07 am Hi,

Yep code can be found in this thread viewtopic.php?p=20335#p20335

I've rewritten this code for my project (using the Peugeot Battery), it needs a bit of tidying before I publish it here, but I hope to do this soon.

Hi VWJoe, I have a battery from an Opel Corsa-e arriving soon and I'm thinking of using it for a solar system. I saw this post and I would be very grateful if you could send me the code you have for this type of battery connection. You can write me PM .

Hi,

Does anyone has the code runnig on ESP32?

Very nice tread, thank you for the info!

Does somebody have UN38.3 or any other datasheet for the CATL 6s2p module?

I thik is similar with this cells

https://www.evlithium.com/catl-battery- ... ttery.html

EdvartsW4E wrote: ↑Tue Feb 06, 2024 2:09 pm Does somebody have UN38.3 or any other datasheet for the CATL 6s2p module?

Datasheet for the cells here:


Interestingly the chemistry proportions are not listed but elsewhere I found 811 mentioned. Could somebody confirm?

m.art.y wrote: ↑Wed Feb 07, 2024 3:37 pm Datasheet for the cells here:

THank you.
But this is for CALB cells, while the e208 use CATL cells/modules

Hi, question to those who have been using those modules. What happens when a module or two are disconnected from the BMS daisy chain? Can the data still be read and cells balanced? Each module has it's own BMS slave board, right?

Yes the BMS daisy chain will work with any number of modules. but the daisy chain wiring needs to be changed to close the chain.

m.art.y wrote: ↑Fri Apr 19, 2024 11:40 am Each module has it's own BMS slave board

Yes

m.art.y wrote: ↑Fri Apr 19, 2024 11:40 am Hi, question to those who have been using those modules. What happens when a module or two are disconnected from the BMS daisy chain? Can the data still be read and cells balanced? Each module has it's own BMS slave board, right?

Depends how you have them linked, the first is by the last module having a loopback hard-wired, in this case, if any module is disconnected all comms stop, the second is to have the slaves setup to a loopback (software), in this case, if you have 16 modules and say number 10 is disconnected the BMS would report 9 modules.

If anyone is having no comms issues with these modules there may be a fundamentally different slave IC in their packs.

Tried all the code shared here only to find the modules I have are MAX17854 as confirmed from reading register 0x0.

Currently working my way through new code based on the manufacturers example code using an ESP32. Works fine so far.

https://github.com/analogdevicesinc/MAXREFDES1277

EV_Builder wrote: ↑Wed Aug 02, 2023 8:18 am Are the 50kwh packs 6S2P?

Yes

woleg wrote: ↑Tue May 28, 2024 11:53 am If anyone is having no comms issues with these modules there may be a fundamentally different slave IC in their packs.

Tried all the code shared here only to find the modules I have are MAX17854 as confirmed from reading register 0x0.

Yeah; the 17854 is found in CATL's 6S1P too.
On my site there is a list of compatible batteries and modules.