Correct way to save and load battery stateful (marshal and unmarshal)

Hello,

I am writing some code with the intent to execute battery stateful save its state (marshal) and then load it again (unmarshal) to execute another timestep (1 minute in this case). I intend to do this through hundreds of time steps with each timestep being a minute.

The script attached shows 3 timesteps (3 minutes)

This script appears to be working fine but Id like to confirm that this is the correct way to do this. Could someone kindly confirm many thanks!