Eldritch Battery

Eldritch Battery

Keystone

Spend Energy Shield before Mana for Skill Mana 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.

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 The Ivory TowerThe Ivory Tower
Saint's HauberkQuality: +20%
Armour: 531
Energy Shield: 87
Movement Speed: -5%Requires Level 67, 109 Str, 94 Int+(40-70) to Intelligence
+30 to maximum Energy Shield per 100 Reserved Life
+(80-100) to maximum Mana
Regenerate 2% of Energy Shield per second
Chaos Damage is taken from Mana before LifeThe mind is a filter through which anarchy becomes order.) 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.

Eldritch Battery does not protect mana against Chaos damage that is redirected to mana (ex. Mind Over Matter or The Ivory TowerThe Ivory Tower
Saint's HauberkQuality: +20%
Armour: 531
Energy Shield: 87
Movement Speed: -5%Requires Level 67, 109 Str, 94 Int+(40-70) to Intelligence
+30 to maximum Energy Shield per 100 Reserved Life
+(80-100) to maximum Mana
Regenerate 2% of Energy Shield per second
Chaos Damage is taken from Mana before LifeThe mind is a filter through which anarchy becomes order.). Chaos Damage will apply directly to the underlying mana pool, and failing that, life pool. Non-Chaos damage types redirected to mana drain energy shield first, but also interrupt energy shield recharge, unlike spending mana on skill costs.

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

Related unique items

Item	Base Item		Stats
Skin of the LordsSkin of the Lords Simple RobeQuality: +20% Movement Speed: -3%Item has no level requirement and Energy Shield (Hidden) Sockets cannot be modified +1 to Level of Socketed Gems 100% increased Global Defences You can only Socket Corrupted Gems in this item Item has 6 Sockets and is fully linked (Hidden) <Random Keystone> CorruptedThe Lords are chosen so carefully. Only they may grace His flesh.	Simple Robe	1	Item has no level requirement and Energy Shield (Hidden) Sockets cannot be modified +1 to Level of Socketed Gems 100% increased Global Defences You can only Socket Corrupted Gems in this item Item has 6 Sockets and is fully linked (Hidden) <Random Keystone> Acrobatics Ancestral Bond Arrow Dancing Avatar of Fire Blood Magic Call to Arms Conduit Corrupted Soul Crimson Dance Doomsday Eldritch Battery Elemental Equilibrium Elemental Equilibrium Elemental Overload Elemental Overload Eternal Youth Ghost Reaver Glancing Blows Hollow Palm Technique Iron Grip Iron Reflexes Mind Over Matter Minion Instability Mortal Conviction Pain Attunement Perfect Agony Phase Acrobatics Point Blank Resolute Technique Runebinder Imbalanced Guard Supreme Ego The Agnostic The Impaler Unwavering Stance Vaal Pact Wicked Ward Wind Dancer Zealot's Oath Corrupted
Replica Sorrow of the DivineReplica Sorrow of the Divine Sulphur FlaskLasts (6.25-7.50) Seconds Consumes 40 of 60 Charges on use 40% increased DamageRequires Level 35Creates Consecrated Ground on Use(25-50)% increased Duration Eldritch Battery during Flask effect Life Recovery from Flasks also applies to Energy Shield during Flask Effect"Success! Prototype #54 has tapped into that sliver of divinity that exists within. Faith fuels the flesh, and the flesh fuels the fire..."Right click to drink. Can only hold charges while in belt. Refills as you kill monsters.	Sulphur Flask	35	Creates Consecrated Ground on Use(25-50)% increased Duration Eldritch Battery during Flask effect Life Recovery from Flasks also applies to Energy Shield during Flask Effect
The Devouring DiademThe Devouring Diadem Necromancer CircletQuality: +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 Veiled SuffixThe spirit hungers for the flesh.Take this item to Jun Ortoi to have her Unveil it.	Necromancer Circlet	54	+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 Veiled Suffix
Replica Soul TakerReplica Soul Taker Siege AxeOne Handed Axe Quality: +20% Physical Damage: (105.6-124.8) to (198-234) Critical Strike Chance: (8.00%-9.00%) Attacks per Second: 1.50 Weapon Range: 11Requires Level 59, 119 Str, 82 Dex(100-140)% increased Physical Damage Adds 10 to 20 Physical Damage (60-80)% increased Critical Strike Chance +(20-25)% to Cold Resistance Your Physical Damage can Freeze Eldritch Battery"Nothing feels so smooth in the hand as Prototype #66. Results like these may justify everything we do here."	Siege Axe	59	(100-140)% increased Physical Damage Adds 10 to 20 Physical Damage (60-80)% increased Critical Strike Chance +(20-25)% to Cold Resistance Your Physical Damage can Freeze Eldritch Battery

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 Righteous FireRighteous FireSpell, AoE, Fire Level: (1-20) Cooldown Time: 0.30 sec Can Store 1 Use(s) Cast Time: Instant Radius: 18Requires 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:1Superior2Anomalous3Divergent1% increased Burning Damage0.5% increased Area of EffectBuff Grants 1% increased Spell DamageGrants (20-39)% more Spell Damage Deals 20% of your Maximum Life as Base Fire Damage per second You Burn for 90% of your Maximum Life per second as Fire Damage Deals 20% of your Maximum Energy Shield as Base Fire Damage per second You Burn for 70% of your Maximum Energy Shield per second as Fire Damage Deals (35.8-1541.8) Base Fire Damage per second +(0-5) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..
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.