Hello,
The battery charges up to its maximum state of charge (SOC) and discharges to the minimum SOC defined at the top of the Battery Dispatch page.
In your file, the limits are set to 15% and 95%:
You can show the "Battery state of charge" variable in the results to see the effect of these limits:
In addition to the power price, the dispatch model considers the cost of cycling the battery in an effort to minimize the number of replacements over the life of the project defined by the analysis period on the Financial Parameters page.
For more discussion on limitations of the merchant plant, see
sam.nrel.gov/forum/forum-general/3068.
Best regards,
Paul.