Eldtritch Battery not working with Ghostwrithe?

The Ghostwrithe armor converts half of my life into energy shield. The Eldritch Battery keystone converts all energy shield into mana. However these do not seem to synergize together. Eldritch Battery does not consume the energy shield created by Ghostwrithe, converting it to mana. Is this working as intended?

Eldritch Battery converts ES from your gear into mana, it is not based on your modified ES (from items like Ghostwrithe, from passive nodes on your skill tree or even from %mana increases from things like amulets.)

The tooltip should probably be updated to make this more clear, but this isn't really a bug, just a misunderstanding of how EB works due to poor wording of the notable description.

Thank. That helps a lot!

Not a bug. If you view the Eldritch Battery node in the passive skill tree and hover over the word "convert" it clearly states that the conversion only applies to your base ES. It means that it converts ALL of your base ES. That doesn't stop items from converting life to energy shield after the fact, which is what happens in this case.

So order of operations as intended is:

1. Base ES is converted to mana by Eldritch Battery
2. Ghostwrithe or Atziri's Disdain convert life to ES
3. Everlasting Gaze adds ES based on base mana
4. Percentage increases from skill nodes are then applied to both ES and mana

These are intended interactions which many people have mistakenly interpreted as a bug because they haven't read the "convert" tooltip on the Eldritch Battery node.