Is Temperature Behavior During 0.5C Charging in SPMe Model Normal?

[ErfanSamadi1998]

I have been working with the following code:

options = {"thermal": "lumped"}
model = pybamm.lithium_ion.SPMe(options=options)
parameter_values = pybamm.ParameterValues("OKane2022")

I observed that when charging the battery at 0.5C, the cell temperature initially increases, then decreases slightly around the middle of the charging process, and finally increases again, as shown in the attached plot.

Is this behavior typical for batteries, or could it be related to inaccuracies or limitations in the model?