Either battery is messed up or my scc settings are messed up.

[Stephen Shreds]

I've had my big battery installed for the past few days. Per wills recommendation I have been watching each cell to see which one hits 3.6 volts to set the absorbtion rate for the scc. But it's not charging past 13.6v with each cell being 3.3v. are my settings wrong in my scc or is my battery just taking longer to fill up? The main positive is disconnected so nothing is drawing power.

 

[Sojourner1]

What are your settings that you're using?
14.4v would be 3.6vpc if they're perfectly match.
Also are you getting enough sun?
You're posting in thought.
We need more info to give some assistance.

 

[Stephen Shreds]

What are your settings that you're using?
14.4v would be 3.6vpc if they're perfectly match.
Also are you getting enough sun?
You're posting in thought.
We need more info to give some assistance.

Let me film a video of the settings real quick

 

[Stephen Shreds]

We need more info to give some assistance.

 

[ghostwriter66]

You should set your equalization to 00 ... Lithium batteries do not require any form of equalization. Applying an equalization charge of 15v+ to LFP will damage the cells beyond repair.
I don't have my numbers in front of me -- but YOUR numbers do NOT look right ... maybe someone can jump in with the correct numbers ... BUT with those numbers you showed .. I would be thinking that your batteries should be over charged right now and not under charged so not sure whats going with your system .. once again - not where my notebook is but something is not right ...

 

[Stephen Shreds]

You should set your equalization to 00 ... Lithium batteries do not require any form of equalization. Applying an equalization charge of 15v+ to LFP will damage the cells beyond repair.

I have tried setting it to 00 but it comes up as a parameter error

 

[Sojourner1]

What solar controller are you using?

 

[Stephen Shreds]

What solar controller are you using?

I have an EP ever with an mt50

 

[Sojourner1]

Your #s seem to be all over the place and not in a good way. I'm going to peek at the manual for it.

Yes

 

[ghostwriter66]

I have tried setting it to 00 but it comes up as a parameter error

I forgot how we had to do it with the MT50 .. we did something like set the Equalization time to 000 minutes and then set the voltage to the same as float or something ... sorry .. guessing

There is only like three things we set with he SCC and let the BMS do the rest

 

[Stephen Shreds]

Your #s seem to be all over the place and not in a good way. I'm going to peek at the manual for it.

I appreciate it!

 

[Stephen Shreds]

I forgot how we had to do it with the MT50 .. we did something like set the Equalization time to 000 minutes and then set the voltage to the same as float or something ... sorry .. guessing

There is only like three things we set with he SCC and let the BMS do the rest

I will try it out real quick.

 

[Sojourner1]

Are you using sealed settings?

 

[Stephen Shreds]

Are you using sealed settings?
View attachment 7433

User

 

[Sojourner1]

New or used cells? I don't remember from your other thread.
12v 800ah?
How much solar?

 

[Stephen Shreds]

New cells
12v
Large battery bank. 4 pararlel pairs at 200ah for each cell. I believe it's 800ah
900w solar

 

[Sojourner1]

Looking at the pic you have 4 200ah cells in series and those are parallel for 12v 400ah.

Series voltage increases, ah stays the same.
3.2vpc x 4 cells= 12.8v @ 200ah
Parallel the ah increases, voltage stays the same.
200ah x 2 = 400ah @ 12.8v

 

[Stephen Shreds]

Looking at the pic you have 4 200ah cells in series and those are parallel for 12v 400ah.

Series voltage increases, ah stays the same.
3.2vpc x 4 cells= 12.8v @ 200ah
Parallel the ah increases, voltage stays the same.
200ah x 2 = 400ah @ 12.8v

Finally some one with a clear answer on that. thank you!

 

[Stephen Shreds]

1,482.69 for a 400ah battery `aint that bad!

 

[ghostwriter66]

1,482.69 for a 400ah battery `aint that bad!

Before you buy another one check with us and we will point you to a better seller .. going to say 1482 is on the high side for 400 ... right now (4) 3.2V 200aH batteries delivered are running right at $425.00 so about $850 for 12V 800aH ....