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The Tesla cannon is a weapon in Fallout: New Vegas.


The Tesla cannon is a shoulder-mounted energy weapon that is powered by electron charge packs. This weapon has a high Strength requirement for its weight and the fact that it's a recoilless energy weapon. The sound of the Tesla cannon firing has also been changed from the one in Broken Steel. The Tesla cannon is considered a unique class of weapon and therefore cannot benefit from the Jury Rigging perk.

The Tesla cannon is rare, especially so if the Courier kills the Van Graffs, thereby eliminating one of the only specialty energy weapon vendors in the game.


The Tesla cannon can fire a total of about 395 times using standard packs, the equivalent of 99 reloads, from full condition before breaking.

Ammunition typeDurability
Over charge26266
Max charge15539



Weapon name (current weapon is highlighted)- Weapon name (melee or unarmed)Attacks in V.A.T.S.- Attacks in V.A.T.S.
Weapon name (current weapon is highlighted)- Weapon name (gun, energy or explosive)Action point cost- Action point cost
Damage per attack (damage per projectile)- Damage per attack (damage per projectile)Damage per action point- Damage per action point
Damage per second- Damage per secondWeapon spread- Weapon spread
Area of effect damage- Area of effect damageMagazine capacity (shots per reload)- Magazine capacity (shots per reload)
Effect damage & duration- Effect damage & durationDurability (number of attacks before breaking)- Durability (number of attacks before breaking)
Bonus effects- Bonus effectsWeight- Weight
Attacks per second- Attacks per secondValue in caps- Value in caps
Critical chance % multiplier- Critical chance % multiplierValue to weight ratio- Value to weight ratio
Critical damage- Critical damageSkill required- Skill required
Critical effect damage & duration- Critical effect damage & durationStrength required- Strength required
With all mods attached- With all mods attached
Weapon name (current weapon is highlighted)Damage per attack (damage per projectile)Damage per secondEffect damage and durationAttacks per secondCritical Chance % multiplierCritical damageAction Point costDamage per action pointWeapon spreadMagazine capacity (shots per reload)Durability (number of attacks before breaking)WeightValue in capsValue to weight ratioSkill requiredStrength required
Tesla cannon 80
Elijah's jury-rigged Tesla cannon Old World Blues (add-on)85
Tesla-Beaton prototype 90



  • After completing the Honest Hearts add-on, the cannon will respawn in the Brotherhood safehouse footlocker.
  • The Tesla cannon uses five electron charge packs per shot, and therefore it's only possible to receive one empty electron charge pack from firing the cannon, the same with all energy weapons that use more than one cell per shot.
  • Due to it previously firing only one shot per reload, it ejects single electron charge packs every shot despite only one being loaded. Also, the electron charge pack will not appear after one shot is fired, and the end of the cannon is retracted, but it still ejects another per shot.

Behind the scenes

  • The Tesla cannon was originally to be featured in the canceled Fallout: Brotherhood of Steel 2, bearing no resemblance to the weapon in Broken Steel. Described as a "high-powered mass-cannon throwing tessellated plasma forward in an orgy of death and destruction" in the Fallout: Brotherhood of Steel 2 design document, it was to be the so-called "uber-weapon" of player character Maxus. "Uber-weapons" were to be unique weapons for each player character which had to be assembled from 5 parts over the course of the game, or the player could have an NPC assemble one for them. One of the five parts for this weapon was a Tesla coil.


Tesla cannon icon.png ReloadVB.png