Microfusion cell

Microfusion cells or fusion cells are an ammunition item in Fallout, Fallout 2, Fallout Tactics, Fallout 3, Fallout: New Vegas, Fallout 4, and Fallout 76.

Background
Microfusion cells are medium sized energy production units, described as a "self-contained fusion plant." They were invented in 2066 by U.S. scientists as a potential solution to the energy crisis amid the Resource Wars. Microfusion cells utilize hydrogen isotopes that undergo fusion when subject to heat and pressure. Microfusion cells are labeled with warnings that they may explode if disposed of in fire, and that they have a capacity of "1040.8 VDC." 

Microfusion cell


A standard microfusion cell.

Microfusion cell, bulk


The bulk version carries a smaller charge than the standard version, resulting in a reduction in damage and armor penetration, but less strain on the weapon.

Microfusion cell, max charge


The max charge version causes the maximum possible damage and armor penetration, but at the expense of increased weapon degradation.

Microfusion cell, over charge


The over charge version causes more damage and weapon degradation than the standard version but not as much as the max charge version.

Microfusion cell, optimized


Added in the Gun Runners' Arsenal add-on, the optimized version causes more damage than the standard version and over charge version and weighs less than the other versions, but with slightly increased weapon degradation.

Fusion cell


A standard fusion cell.