ESOH Model errors

[sklein-ise]

Hey,

I've been getting a lot of errors, when I try to use the experiment class without calc_esoh = False and I don't really understand how to fix it.

The idea was to cycle a battery between 75% to 50% SoC for approximately 2400 cycles with ec reaction limited SEI growth.
I wanted to fit the "SEI kinetic rate constant [m.s-1]" to the experiment by simulating for different kinetic rates between 10**(-14) and 10**(-18).

When it tries to solve for the ESOH model I get

1. SolverError: Could not find acceptable solution: .../casadi/core/rootfinder.cpp:280: rootfinder process failed. Set 'error_on_fail' option to false to ignore this error.

2. or an error where it says the found solution error is higher than the tolerance

What do these errors mean and is there any way to avoid this?

Thanks in advance

[valentinsulzer]

It means it wasn't able to solve the esoh model. Can you share the code?