Missing packs in Batrium

[stijnqc]

Hi there,

I am new to all this and ran into an issue so thought to ask it here. Would appreciate your help.

I am installing a 14S80P 18650 system. Batrium with K9s.
I installed the first string, all went fine but when adding the second string I ran into some issues.

So string 1, 14S is on K9 A. All fine.
String 2, 14S, is on K9 B. For some reason, it does not show pack 1 and 2, or 15 and 16 and reports them as 0V, which they are not, confirmed with the multimeter. I checked the wiring harness several times, I tested it again and again with the testmon, it passes every time.

In the end I decided to put string 2 on K9 A and string 1 on K9 B.
And the problem does not move with the strings. Still position 15 and 16 not showing but now for string 1, which worked fine on K9 A.
I know now that wiring harnesses for string 1 and 2 are ok, they work fine on K9 A.

So I swap out K9 B, same issue with both strings.
K9 C, same issue, both strings.
K9 D, same issue, both strings.

So it must be in the Batrium module itself no?
Any idea? Or could you point me in the right direction where to get this question answered and pro
blem solved?

Thank you.
Stijn

Edit: solved it by doing a device sync! I told you I was new to this! .

 

[OffGridInTheCity]

Edit: solved it by doing a device sync! I told you I was new to this! .

Happy you found 'sync!' and problem solved.

I'm in year 8 of Batriums w/longmons. A140pack (135kwh) home powerwall

and a 28pack (27kwh) battery in the camp trailer

The toolkit charts are displayed on my daily driver desktop and it gives me peace of mind / feel perfectly safe operating the powerwall when i can see what's happening. Also, it's nice that after 8yrs it's all continuing to work and...

As I've continued to expand year after year (working on another 14s right now in 2026) the newer longmons remain compatible with the older ones. The continuity (over the years) of Batrium is amazing.

A few years ago they started a forum - https://community.batrium.com/ - and it's a good resource to ask questions.

 

[stijnqc]

Thanks for your reply.
Encouraging to know your system has been running for such a long time already!
I plan to build an 8P14S80P. I got a little headstart as I bought Daromers old cells, including 2P14S80P which after capacity testing one by one seemed still fine.
I build my own 14S80P string and have almost completed the fourth.
Installed first string three days ago, 2nd yesterday, 3rd today.
Now that I know how to add another string to the system it is easy. Happy!