Battles: Energy

Your energy can be found in the top-right corner.

Battle Energy determines how often you can fight and refills at a rate dependent on your Level.

Formula:

// 0.98^(level-1)*4 hrs

Maximum Energy is dependent on your Power and Fortification.

Formula:

// 6+((power_level + fortification_level) * 0.334).ceil

It is fair to assume that Energy may be required for future game elements (e.g. PvE, Boss battles, etc.)

The following tables show the formulas and leveling curves for the advantages at x-levels.