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Eldritch Battery

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Eldritch Battery
KeystoneEldritchBattery passive skill icon.png
Spend Energy Shield before Mana for Skill Costs
Energy Shield protects Mana instead of Life
50% less Energy Shield Recharge Rate [1]
What need have I for defence when my enemies are reduced to ash and splinters?
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.


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, and any reduction to energy shield will interrupt its recharging and reset its recharge delay.

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.


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

On Items

The Devouring DiademThe Devouring Diadem
Necromancer Circlet
Quality: +20%
Energy Shield: (156-176)
Requires Level 54, 112 Int+1 to Level of Socketed Gems
Socketed Gems have 20% reduced Mana Reservation
Trigger Level 15 Feast of Flesh every 5 seconds
(180-220)% increased Energy Shield
10% chance for Energy Shield Recharge to start when you use a Skill
Eldritch Battery
<One Veiled Mod>
The spirit hungers for the flesh.Take this item to Jun Ortoi to have her Unveil it.

Version history

Version Changes
  • 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.
  • Fixed a bug where players with Eldritch Battery would spend energy shield to cast spells which reserved mana.
  • Fixed a recently introduced bug where Eldritch Battery prevented the life degeneration of Righteous FireRighteous FireSpell, AoE, Fire
    Radius: 18
    Can Store 1 Use(s)
    Cooldown Time: 0.30 sec
    Requires Level 16Engulfs you in magical fire that rapidly burns you and nearby enemies. Your spell damage is substantially increased while under this effect. The effect ends when you have 1 life remaining.Per 1% Quality:
    1% increased Spell Damage
    Grants (20-39)% more Spell Damage
    Enemies Burn for 40% of your maximum Life per second as Fire Damage
    You Burn for 90% of your maximum Life per second as Fire Damage
    Enemies Burn for 40% of your maximum Energy Shield per second as Fire Damage
    You Burn for 70% of your maximum Energy Shield per second as Fire Damage
    +(0-5) to radius
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Righteous Fire skill icon.png
  • Eldritch Battery now causes Energy Shield to protect Mana instead of Life.
    (Old effect: Converts all Energy Shield into Mana)
  • Fixed a server crash related to the Discipline aura and Eldritch Battery.
  • Introduced to the game.