Arclight Complete Build Guide: Electric Core & SP Battery
Version: 1.0 | Updated: 2026-03-04
Sources: Mobalytics, Game8, Icy Veins, endfield.gg
Overview
Arclight is a 6-star Electric Vanguard who excels at SP generation and Electric damage amplification. She's a fast-paced operator who plays around Electrification, consuming enemy Electric Infliction to generate SP and buff team Electric damage.
| Attribute |
Details |
| Rarity |
⭐⭐⭐⭐⭐⭐ |
| Element |
Electric ⚡ |
| Class |
Vanguard |
| Main Stat |
Agility |
| Role |
SP Battery / Sub DPS |
Why Arclight is S-Tier
| Strength |
Description |
| ⚡ SP Generation |
Battle Skill consumes Electrification for SP |
| 🔋 Team Buffer |
Combat Talent boosts Electric DMG team-wide |
| 🏃 Fast-Paced |
Low cooldowns, constant skill uptime |
| 🔄 Reaction Enabler |
Ultimate applies Electric Infliction for reactions |
Core Mechanic: Electrification Loop
How It Works
- Teammate applies Electric Infliction to enemies
- Arclight Battle Skill consumes Infliction → Triggers Electrification
- Electrification → Arclight generates SP
- Combat Talent → After consuming enough Electrification, team gains Electric DMG buff
- Repeat
Key Points
| Mechanic |
Details |
| Electrification source |
Only her Ultimate applies Electric Infliction |
| Consumption requirement |
Battle Skill consumes enemy's Electric Infliction |
| SP recovery |
On consumption, recovers SP for team |
| Talent activation |
Consume multiple Electrification stacks |
Important: Arclight needs an Electric Infliction provider (like Perlica or Avywenna) to function optimally. Her Ultimate applies Infliction, but you want it for damage, not setup.
Best Weapons
Tier 1: Thermite Cutter (Best Overall)
| Attribute |
Value |
| Main Stat |
ATK% |
| Passive |
Team ATK buff after Battle Skill |
| Source |
40-Pull Selector Box |
Why Best: ATK% is scarce in Endfield. Thermite provides team-wide buff, making it the safest meta pick.
Tier 2: OBJ Edge of Lightness (F2P)
| Attribute |
Value |
| Main Stat |
Heat/Electric DMG |
| Source |
Operation Manual (Free) |
Why Good: Free weapon with relevant element bonus.
Tier 3: Twelve Questions (Personal DPS)
| Attribute |
Value |
| Focus |
Personal damage |
| Use Case |
Sub-DPS Arclight |
Tier 4: Signature Weapon
| Attribute |
Value |
| Passive |
Personal damage boost |
| Note |
Doesn't buff team, not recommended over Thermite |
Best Gear Set
Endgame: Frontiers Set (3pc) + Off-piece
| Piece |
Slot |
Stats |
| Frontiers Armor |
Armor |
DEF, STR, INT |
| Type 50 Yinglung Gloves |
Gloves |
Off-set for stats |
| Frontiers Extra O2 Tube |
Kit 1 |
Secondary Attribute% |
| Frontiers Extra O2 Tube |
Kit 2 |
Secondary Attribute% |
Set Bonus (3pc Frontiers): Vanguard-focused bonuses for SP generation.
Why This Build:
- Frontiers is the Vanguard set
- Secondary Attribute% pieces synergize with her Combat Talent
- Focus on Agility for main scaling
Early Game: Any Agility Set
Prioritize Agility main stat until you farm Frontiers.
Stat Priority
| Priority |
Stat |
Reason |
| 1 |
Agility |
Primary scaling |
| 2 |
ATK% |
Damage output |
| 3 |
Ultimate Gain |
More frequent Infliction application |
| 4 |
CRIT Rate/DMG |
Personal damage |
Best Team Compositions
Electric Core Team
| Slot |
Operator |
Role |
| Main DPS |
Arclight or Avywenna |
Electric damage |
| Sub DPS |
Avywenna |
Electric Infliction |
| Support |
Perlica |
Electric Infliction enabler |
| Flex |
Ardelia or Healer |
Sustain |
Why This Works: Perlica and Avywenna provide constant Electric Infliction. Arclight consumes it for SP and team buffs.
Hybrid Support Team
| Slot |
Operator |
Role |
| Main DPS |
Laevatain/Yvonne |
Any element |
| SP Battery |
Arclight |
SP generation |
| Infliction |
Electric unit |
Enable Arclight |
| Support |
Any |
Team-dependent |
Use Case: Arclight as pure SP battery in non-Electric teams.
Skill Priority
| Priority |
Skill |
Reason |
| 1 |
Battle Skill |
SP recovery scaling |
| 2 |
Combo Skill |
Damage contribution |
| 3 |
Ultimate |
Infliction application |
| 4 |
Basic Attack |
Lowest priority |
Potential Analysis
| Potential |
Effect |
Value |
| P1 |
Child of the Storm |
⭐⭐⭐ |
| P2 |
Speed Battler |
⭐⭐⭐ |
| P3 |
Hanna |
⭐⭐⭐ |
| P4 |
Aldertone's Teachings |
⭐⭐⭐ |
| P5 |
Servant of the Wildlands |
⭐⭐⭐⭐⭐ |
Key Potential: P5 reduces the number of Electrification consumptions needed to activate Combat Talent. Major QoL improvement.
Note: Vertical investment in Endfield is not recommended. Treat Potentials as bonus.
Gameplay Tips
Rotation
1. Teammate applies Electric Infliction
2. Arclight Battle Skill → Consume → Electrification triggers
3. Battle Skill generates SP for team
4. Repeat until Combat Talent activates
5. Ultimate when full → Apply more Infliction
6. Continue loop
Key Tips
| Tip |
Details |
| Don't waste Ultimate on setup |
Use for damage, not Infliction application |
| Pair with Perlica |
She applies Electric Infliction on demand |
| Watch Avywenna rotation |
Don't consume her needed Electrification |
| Low cooldown abuse |
Battle Skill has very short CD |
Common Mistakes
| Mistake |
Solution |
| No Infliction provider |
Add Perlica or Avywenna |
| Consuming Avywenna's setup |
Coordinate team rotation |
| Using Ultimate just for Infliction |
Save for damage windows |
Summary
Arclight is the premier SP battery and Electric team enabler in Arknights: Endfield. Build her with:
- Weapon: Thermite Cutter (team ATK buff)
- Gear: Frontiers 3pc with Secondary Attribute%
- Stats: Agility > ATK% > Ultimate Gain
- Team: Needs Electric Infliction provider (Perlica/Avywenna)
She excels at keeping your team's skills flowing while providing Electric damage amplification.
References