Like all Field Upgrades in Zombies, Tesla Storm can be upgraded by using Aetherium Crystals.
- Upgrade I: Double the damage dealt to enemies stunned by Tesla Storm.
- Upgrade II: Increase the duration to 15 seconds.
- Upgrade III: Special enemies can be stunned and damaged by Tesla Storm.
- Upgrade IV: Players generating a field gain 25% increased movement speed.
- Upgrade V: Elite enemies can be stunned and damaged by Tesla Storm.