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For an overview of Tesla cannons in the Fallout series of games, see Tesla cannon.
Gametitle-FNV OWB
Gametitle-FNV OWB

Elijah's jury-rigged Tesla cannon is a unique weapon in the Fallout: New Vegas add-on Old World Blues.


This section is transcluded from Tesla cannon. To change it, please edit the transcluded page.

The Tesla cannon is a pre-War, portable, directed-energy weapon. It was designed to be used as a lightweight, compact anti-tank weapon. The design was named after Nikola Tesla, whose designs for the technology were seized by the U.S. government after his death. When used, the cannon projects a blast that will damage the enemy on impact. It will continue to gradually reduce the enemy's health due to its ability to electrify the target and its surroundings.


This weapon is identical in appearance to the Tesla-Beaton prototype, although its damage is between that and the regular Tesla cannon. It also holds more ammunition, allowing for six shots to be fired before reloading and is more durable than the Tesla-Beaton prototype, while only inflicting slightly less damage. It has the benefit of no spread at all, allowing for accurate fire if the skill requirements are met. Even though the weapon is slightly more practical than its counterparts in direct combat, its high value and low durability make it the most costly model to maintain with repeated use.


Elijah's jury-rigged Tesla cannon can fire a total of about 245 times using standard Electron charge packs, the equivalent of 41 reloads, from full condition before breaking.

Ammunition typeDurability
Over charge16227
Max charge9516



Icon melee- Weapon name (melee or unarmed)Icon sequence- Attacks in V.A.T.S.
Icon gun- Weapon name (gun, energy or explosive)Icon action- Action point cost
Icon damage- Damage per attack (damage per projectile)Icon dap- Damage per action point
Icon dps- Damage per secondIcon spread- Weapon spread
Icon explosion- Area of effect damageAssault carbine extended magazines- Magazine capacity (shots per reload)
Icon effect- Effect damage & durationIcon repair- Durability (number of attacks before breaking)
Icon bonus effect- Bonus effectsIcon weight- Weight
Icon attack- Attacks per secondIcon merchant- Value in caps
Icon chance- Critical chance % multiplierIcon ratio- Value to weight ratio
Icon critical damage- Critical damageIcon ability- Skill required
Icon crit effect- Critical effect damage & durationIcon fist- Strength required
Icon plus- With all mods attached
Icon gunIcon damageIcon dpsIcon effectIcon attackIcon chanceIcon critical damageIcon actionIcon dapIcon spreadAssault carbine extended magazinesIcon repairIcon weightIcon merchantIcon ratioIcon abilityIcon fist
Tesla cannon 80
127.4+20Icon electrical/2s1.34x240373.20.120(4)395887001087.51008
Elijah's jury-rigged Tesla cannon Gametitle-FNV OWB85
154.2+20Icon electrical/2s1.58x245373.40.0030(6)2458135001687.51008
Tesla-Beaton prototype 90
145.8+25Icon electrical/2s1.34x245373.80.0824(4)1958125251565.61008


  • Located in the Big MT, found looking west near the wooden platform where the second sentry gun is located at Elijah's Watch.


  • After picking up the Tesla cannon 3-5 damaged or berserk Securitrons will spawn nearby.
  • This weapon has very low health so it degrades in condition very quickly.
  • Due to it previously firing only 1 shot per reload, it ejects electron charge packs every shot which is strange considering only one is 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.
  • Despite the name, Elijah's jury-rigged Tesla cannon cannot be Jury Rigged with any other weapon, it can only be repaired with the standard version.
  • This weapon is one of 2 weapons in the game that have no spread, the other being the Alien blaster.


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