Characters with this attribute have four times the energy reserves of a normal character, but only regenerate up to the usual number of points, making them appear to be only one quarter full in game.
The extra tanks can be filled, however, with energy absorbed by passive defences, or energy leech powers if the character has them, or by energy transfer from a friendly unit. This can be useful for creating characters with energy absorbing capabilities since a power with extreme cost can then be 'unlocked' by the absorption of energy.
Important: Due to FFX Control Centre having a limit on the number of customizable attributes, Energy Tanks has to be customized manually by opening ffxcustom2.py:
### Energy Tanks FFX_ENERGYTANKS_CUSTOM=[ ["default","notAmbient"], ["types","PAmbient?"], ]