Lifepo4 dead HELP

[Mickie]

My smart lifepo4 is fully charged but showing 0% soc and 10.458v
Cmos on
Dmos off

 

[John Frum]

A candidate hypothesis...
Your BMS opened the discharge path because a cell dipped under 2.5 volts.
The remedy is to charge the battery.
Once the cell reaches the release trigger voltage the discharge path will close.

 

[John Frum]

Please post the individual cell voltages.

 

[Mickie]

Please post the individual cell voltages.

 

[timselectric]

My smart lifepo4 is fully charged but showing 0% soc and 10.458v

Not fully charged.
Dead

 

[John Frum]

According to the individual cell voltages the pack voltage is 13.891 volts not 10.458 as you stated in your individual post.
Also cell #2 is very close to high cell disconnect.
Something is not adding up.
Is the discharge path still open?

 

[Mickie]

Not fully charged.
Dead

The cells aret dead . Its the bms seeing 10.485. i was messing

According to the individual cell voltages the pack voltage is 13.891 volts not 10.458 as you stated in your individual post.
Also cell #2 is very close to high cell disconnect.
Something is not adding up.
Is the discharge path still open?

I accidentally pressed something i think i turned off the dmos and in trying yo turn it back on thats when i daw the 10.485

 

[Mickie]

If i turn back on the dmos it just shuts down the bms cuz its reading as too low

 

[Mickie]

Would it make sense for me to go into settings and change the lowvoltage fisconnect to something lower than 10.485? And how would that affect charging cuz now when i connect my ac charger it just turns on and it says full after like 10 seconds.

 

[John Frum]

Would it make sense for me to go into settings and change the lowvoltage fisconnect to something lower than 10.485? And how would that affect charging cuz now when i connect my ac charger it just turns on and it says full after like 10 seconds.

The pack level low voltage disconnect is probably 10 volts.
The cell level low voltage disconnect is probably 2.5 volts.
Please verify those settings.

 

[42OhmsPA]

Your BMS is likely protecting the pack because of that high cell.
What voltage are you charging them at?

 

[jasonhc73]

Looks like one of the cell bms wires are not connected to the cell properly.

You certainly need to balance these cells.

 

[Mickie]

Your BMS is likely protecting the pack because of that high cell.
What voltage are you charging them at?

No i was messing around in the setting i accidentally turned off dmos and when i turned it back on it was showing the voltage at 10.***

 

[Mickie]

These are the setting i currently use

 

[Mickie]

These are the settings im using.

 

[Mickie]

.

 

[Mickie]

What is the FD for?

 

[Mickie]

I have to keep reconnecting the AC vharger for the battery to be visible on the app cuz it seems 1 cell isnt being dected by the bms thats why its seeing only 10+ volts

 

[740GLE]

Can you get the cells balanced? The delta is pretty huge.

Pictures of the inter cell connections?

 

[cs1234]

Looks like one of the cell bms wires are not connected to the cell properly.

You certainly need to balance these cells.

The screenshot looks like he is using a sealed Himassi battery. I don't think he can verify whether the cabling is connected properly to the cell.