Eldritch Battery

Energy Shield shown over mana, instead of life.

Eldritch Battery (often referred to as EB) is a keystone passive skill that makes energy shield protect mana instead of life.

Mechanics

Energy shield protects mana instead of life. All modifiers to energy shield apply normally but it is not affected by modifiers to mana or mana regeneration. Energy shield recharge and recovery through Zealot's Oath or Ghost Reaver function normally. Any reductions to mana (e.g. skill costs) will instead reduce energy shield by the same amount.

As the energy shield can no longer absorb damage, and spending mana doesn't count as taking damage, the energy shield will always start recharge instantly. However, redirecting damage to mana (ex. Mind Over Matter or ) will drain energy shield before mana and interrupts recharge as usual. Chaos damage will bypass energy shield and drain mana directly as it would with energy shield protecting life.

With regards to skills like Blood Rage and Righteous Fire, Energy Shield is still counted in the degeneration applied to health.

Eldritch Battery also causes energy shields to no longer grant a chance to avoid stun.

Location

Eldritch Battery is a standalone keystone located on the upper right edge of the skill tree.

Class	Distance from start
Witch	9
Shadow	11
Scion	15
Templar	16
Ranger	19
Marauder	23
Duelist	25

Version history

Version	Changes
3.14.0	(Not in patch note) Now clarified in the mod text that spent "Energy Shield before Mana for Skill Mana Costs", instead of just Cost
3.5.0	Now causes you to have 50% less Energy Shield Recharge Rate. Energy Shield Recharge is no longer interrupted by non-damage changes to your Life or Energy Shield, such as when you spend your Energy Shield on skills via Eldritch Battery.
2.0.2	Fixed a bug where players with Eldritch Battery would spend energy shield to cast spells which reserved mana.
2.0.1	Fixed a recently introduced bug where Eldritch Battery prevented the life degeneration of .
2.0.0	Eldritch Battery now causes Energy Shield to protect Mana instead of Life. (Old effect: Converts all Energy Shield into Mana)
0.9.8e	Fixed a server crash related to the Discipline aura and Eldritch Battery.
0.9.4	Introduced to the game.