Energy cell (Fallout: New Vegas)

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For an overview of small energy cell ammunition types in the Fallout series of games, see energy cell.
Gametitle-FNVGametitle-FNV GRA
Gametitle-FNVGametitle-FNV GRA

The energy cell is a type of ammunition in Fallout: New Vegas.


Energy cells are small, self-contained energy storage units often associated with one-handed energy weapons and act essentially as a very powerful battery or capacitor. They are the standard ammunition used by the majority of pistol energy weapons, and as such are widely available across the Mojave Wasteland.

Weapons using this ammunition



Main article: Workbench

After firing, there is a chance that spent energy cells will turn into drained energy cells. These are automatically placed in the player character's inventory. Drained energy cells can then be recycled back into usable energy cells at a workbench.

This section is transcluded from Fallout: New Vegas crafting. To change it, please edit the transcluded page.
Name Skill Requirement Produced on Items needed
Energy cell Science: 10, (35 for Efficient recipe with Vigilant Recycler Workbench
See: comparison table for chances of drained energy cells being produced for each variant of energy cell.


Conversion (type)

Energy cells can be converted into, and from, other energy weapon ammunition types (i.e. electron charge packs and microfusion cells) at a workbench, with the appropriate Science skill.

This section is transcluded from Fallout: New Vegas crafting. To change it, please edit the transcluded page.
From To Name Skill required Produced on Ratio
Energy cell Electron charge pack Conversion, small energy cell to electron charge pack Science: 50 Workbench 1:2
Microfusion cell Conversion, small energy cell to microfusion cell Science: 30 Workbench 3:2
Fission battery Honest HeartsGametitle-FNV HH
Drained small energy cell (5)
Energy cell (25) Conversion, Fission battery to small energy cell Science: 45 Workbench -
Conversion (variant)

The player can also pool charges from good cells together to make more powerful variants, which improve damage and bypass more enemy DT but burn out weapon components faster.

This section is transcluded from Fallout: New Vegas crafting. To change it, please edit the transcluded page.
From To Skill required Produced on Amount required
Energy cell Energy cell max charge (2) Science: 70 Workbench 5
Energy cell optimized (GRA)¹ (2) Science: 40/(70)² Workbench 3
Energy cell over charge (2) Science: 30 Workbench 3


Energy cell, bulk

Bulk energy cells are cheaper than the regular variant, but not as potent. Weapons degrade more slowly using this ammunition, however damage is reduced and there is no armor-piercing effect.

Energy cell, over charge

This ammunition is more powerful than standard energy cells. It increases the damage output of weapons by 1.25 and has a -5 DT effect on enemies, but degrades weapons 1.5 times faster than normal.

Energy cell, max charge

This is the most powerful of the energy cell variants. Max charge cells increase damage output to 1.5 times normal and have an armor piercing effect of -10 DT, but cause weapons to degrade 2.5 times faster.

Energy cell, optimized

Added in Gun Runners' Arsenal, this sub-type causes 30% more damage, penetrates armor more effectively, and weighs less than the standard energy cell. The only drawback is a slight increase in weapon degradation. It requires Vigilant Recycler and can only be crafted at a workbench. This type of cell is slightly superior to overcharged cells.


Name DMG DT CND SPRD Other Craftable Drained energy cells
Energy cell x 1 - 2 x 1 x 1 Yes 35% Chance
Energy cell, bulk x 0.85 x 1 x 0.85 x 1 No 20% Chance
Energy cell, max charge x 1.5 - 10 x 2.5 x 1 Yes 10% Chance
Energy cell, over charge x 1.25 - 5 x 1.5 x 1 Yes 25% Chance
Energy cell, optimized Gun Runners' ArsenalGametitle-FNV GRA x 1.3 - 5 x 1.1 x 1 60% of standard weight. Yes 40% Chance


  • Hidden Valley bunker - If you gain accepted status or higher with the Brotherhood of Steel, you will be approached by a BoS initiate telling you they have placed recycled ammunition in a box at the bottom of the entrance stairs to the L1 area. The box will be replenished randomly with energy cells, microfusion cells and electron charge packs whenever you enter L1, giving a continuous supply of energy weapons ammunition.
  • When killed, Mister Gutsys will have small amounts on them.
  • Extremely large numbers can be found in one of the boxes that appears during Caesar's Favor and Caesar's Hire (sometimes over 1800 can be found). The box that the cells appear in only appears once you reach Idolized reputation with Caesar's Legion.
  • Old World Blues (add-on)Gametitle-FNV OWB - Muggy can provide 50 a day once given the "Parts Production" upgrade.
  • Old World Blues (add-on)Gametitle-FNV OWB - Once you have upgraded the sonic emitter, you can go to Doctor 8 and he will give you 100 regular, overcharged and max charged energy cells.
  • Old World Blues (add-on)Gametitle-FNV OWB - 200 cells are in the underwater section of the Magnetohydraulics Complex.
  • Lonesome Road (add-on)Gametitle-FNV LR - Both ED-Es, with the right upgrade, can provide a small amount of energy cells a day, along with microfusion cells and flamer fuel.


  • Despite their name, energy cells are abbreviated as "SEC" (small energy cell) at workbenches. Additionally, the drained cell sometimes left behind and the bulk ammunition box also adopts this trait, being called small "drained energy cell" and "Ammo box, small energy cell, bulk" respectively.

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