Editing Fusion coil

{{Status|Canon}}
{{Disambig header|the explosive container|fusion cores in general|Fusion reactor}}
[[File:HINF FusionCoils.png|thumb|300px|Four types of fusion coils.]]
A '''fusion coil''', also known as a '''fusion core''',{{Ref/Site|Id=bwu-12345|URL=http://halo.bungie.net/News/content.aspx?type=topnews&cid=12345|Site=Bungie.net|Page=Bungie Weekly Update 04/06/2007|D=7|M=2|Y=2021}} is a container used for storing and transporting raw power.{{Ref/Book|Id=enc22|Enc22|Page=440}} Fusion coils are used universally across multiple factions; different variants of the fusion coil have been manufactured by the [[UNSC]],{{Ref/Reuse|bwu-12345}} the [[Banished]],{{Ref/Reuse|enc22}} and even the [[Forerunners]].{{Ref/Game|Id=HINF|HINF|gameplay}} They can be used to power weapons and vehicles.{{Ref/Reuse|enc22}} Although fusion coils are used to store plasma, the [[Covenant]] made use of a similar technology with their [[Plasma battery|plasma batteries]].

==Known types==
All known variants of fusion coil are in the shape of a rectangular prism. They each consist of a metallic outer casing to protect the volatile materials within. The contained materials can usually be seen glowing from within the fusion coils, and the glow becomes more intense as the coil becomes more damaged.
 
===UNSC fusion coil===
This variant of fusion coil was developed by the [[United Nations Space Command]] to transport and store compressed [[plasma|superheated plasma]]. The container is made primarily out of glass and aluminum.{{Ref/Reuse|bwu-12345}} One variant is colored matte brown, overlaid with what appears to be austere gold circuitry on the surface.{{Ref/Game|Id=H2|H2|gameplay}} A second variant is metal frame holding an amber, darkly-glowing, cylindrical object. When slightly damaged, the internal coil glows a warning red; when heavily damaged, it glows bright white. Stickers on the frame warn of radioactivity and high voltage. It emits a loud humming noise constantly.{{Ref/Game|Id=H3|H3|gameplay}}{{Ref/Game|Id=HR|HR|gameplay}}{{Ref/Game|Id=H4|H4|gameplay}}

<gallery>
File:H2-UNSCFusionCores.jpg|Two UNSC fusion coils.
File:H3-FusionCore.png|Another variation of UNSC fusion coil.
</gallery>

===Blast coil===
The blast coil is a variant of fusion coil developed and used by the [[Banished]]. It contains a highly explosive material that emits a yellow glow. When detonated, the coil delivers a powerful localized blast.
<gallery>
File:HINF BlastCoils.png|Two blast coils within a Banished base on [[Installation 07]].
File:HINF BoomBoxes.png|Small and large variations of the blast coil.
</gallery>

===Plasma coil===
The plasma coil is a variant of fusion coil developed and used by the Banished to hold [[plasma]], in a similar fashion to [[Covenant]] [[plasma battery|plasma batteries]]. When detonated, the plasma coil leaves a pool of burning plasma behind.
<gallery>
File:HINF PlasmaCoilNormal.png|A plasma coil at [[Outpost Tremonius (location)|Outpost Tremonius]].
File:HINF PunishedPlasma.png|A plasma coil after receiving damage. Notice the more intense glow.
File:HINF PlasmaCoil.png|Small and large variations of the plasma coil.
</gallery>

===Shock coil===
The shock coil is a variant of fusion coil developed and used by the Banished for powering [[voltaic weaponry|their voltaic weapons]]. It contains electricity and emits a strobing blue light. When detonated, the shock coil emits large amounts of electricity that can arc toward nearby objects. It can also have the effect of an [[electromagnetic pulse]] on vehicles and other electronic devices.
<gallery>
File:HINF ShockCoil.png|A shock coil at a UNSC [[Forward Operating Base]] captured by the Banished.
File:HINF ShockCoils.png|Both sizes of shock coil next to each other.
</gallery>

===Hardlight coil===
The hardlight coil is a variant of fusion coil developed by the [[Forerunners]]. It contains purple [[hardlight]] energy that swirls violently within its casing. When detonated, the hardlight escapes, bouncing off of solid objects and disintegrating any organic material it comes into contact with, much like the hardlight projectiles fired by the [[Heatwave]].
<gallery>
File:HINF HardlightCoil.png|A hardlight coil.
File:HINF HardlightCores.png|Two hardlight coils within a Forerunner [[Beacon tower]].
File:HINF BigHardlightCoil.png|The larger variation of hardlight coil.
</gallery>

==In-game information==
Several shots from any weapon can detonate a fusion coil. In [[multiplayer]], players often may attempt to lay an ambush for a hostile near a coil by tossing a [[M9 High-Explosive Dual-Purpose Grenade|fragmentation grenade]] towards the coil when the enemy forays near. Alternatively, they can be pushed from above onto passing enemies, exploding on impact with the ground, or used as anti-vehicle landmines at vehicle choke points. They have also been used for [[explosive jumping]] and in [[Forge]] to create [[Forge/Tricks#Instant Respawn|perpetual explosions]].

In ''[[Halo 2: Anniversary]]''{{'}}s Forge, there is an EMP variant of the fusion coil, much like how there is an EMP variant of the [[landmine]].

In ''[[Halo Infinite]]'', the smaller variation of fusion coils can be picked up and thrown by the player, as well as by enemy [[Jiralhanae]]. Like other items that can be held by the player, fusion coils can be picked up from a distance using the [[Grappleshot]]. In multiplayer, hitting an enemy Spartan directly with the fusion coil will kill them instantly. Killing an opponent in multiplayer with a thrown fusion coil will earn the player the [[Kong]] medal. Larger fusion coils are stationary, but have much more damaging effects when detonated. 

Each variant of fusion coil in ''Halo Infinite'' performs differently:
*Blast coils deal kinetic damage in a large area. Large blast coils have an even larger area of effect.
*Plasma coils are effective against shields and leave a damaging field on the ground, similar to a [[Veporokk Workshop Ravager]]'s charged shot. Large plasma coils spew plasma in an area before exploding and releasing their fragments, that leave the aforementioned damaging field.
*Shock coils deal shock damage and have an [[EMP]] effect on vehicles. Large coils will spew electricity for a long time when damaged until they explode.
*Hardlight coils deal hardlight damage and release bouncing projectiles on explosion, like those fired by the Heatwave. Large coils burst in even more projectiles.

==Production notes==
*A Bungie Weekly Update described an incident where a beta tester used them, along with the [[Forge/Tricks#Instant Respawn|Instant Respawn]] trick, to [[Elephant flipping|turn an Elephant into a "satanic piñata"]] on the ''Halo 3'' map [[Sandtrap]].{{Ref/Site|Id=bwu-12685|URL=http://halo.bungie.net/News/content.aspx?type=topnews&cid=12685|Site=Bungie.net|Page=Bungie Weekly Update 08/03/2007|D=24|M=12|Y=2013}}
*When saving a map variant in ''Halo 3''{{'}}s Forge, a brief "Terms of Use" agreement is shown. In the agreement, [[Bungie]] jokingly references the temptation to exploit these items, adding: "...And try not to build ''all'' your structures out of fusion coils."{{citation needed}}
*In the [[Halo 3 manual|''Halo 3'' manual]], under "The Forge" section, it references "Cooperate with your friends to make the work go faster, But don't forget to throw a fusion coil at them from time to time."

==Gallery==
{{Linkbox|gallery=yes|gallerypage=Images of fusion coils}}
<gallery>
File:Evolution of Fusion Core copy.jpg|The evolution of the UNSC fusion coil. Note that this item was not present in ''[[Halo: Combat Evolved]]''.
File:UNSCFusionCoresHistory-RefChart.jpg|Reference chart comparing between ''Halo 2'', ''Halo 3'', ''Halo: Reach'', and ''Halo 4''. Not to scale.
File:Boom_Core_copy.jpg|Sequence image showing the ''Halo 3'' fusion coil's phases from damaged state to exploding state.
File:Fusion Core Decal.jpg|A radioactivity warning on the top of a UNSC fusion coil.
File:HReach-FusionCore.png|A fusion coil in a stable state in ''Halo: Reach''.
File:H4-UNSCFusionCore-Front.png|A fusion coil in ''Halo 4''.
File:HINF Concept FusionCoils.jpg|Concept art of UNSC, Forerunner, and Banished fusion coils for ''Halo Infinite''.
File:HINF Concept PlasmaCoil.jpg|Concept art of a plasma coil for ''Halo Infinite''.
File:HINF XGS2020 Grappleshot Fusion Core.png|John-117 using his Grappleshot to pick up a blast coil in the ''[[Halo Infinite Campaign Gameplay Premiere]]''.
File:HINF Achievement WaitICanThrowThose.png|An achievement image in ''Halo Infinite'' featuring [[John-117]] throwing a blast coil.
File:HINF plasma coil explosion.png|A thrown plasma coil explodes.
File:HINF-CoilHUD.png|HUD of the fusion coil.
File:HINF-ForestWinner.png|A player with a fusion coil stance in ''Halo Infinite''.
File:HINF-OhNO.png|A [[MENACHITE-class Mjolnir|Menachite]]-clad Spartan-IV prepares to throw a fusion coil at an [[Unggoy Conscript]].
</gallery>

==List of appearances==
*''[[Halo 2]]'' {{1st}}
*''[[Halo 3]]''
*''[[Halo 3: ODST]]''
*''[[Halo: Reach]]''
*''[[Halo 4]]''
*''[[Halo 2: Anniversary]]''
*''[[Halo 5: Guardians]]''
*''[[Halo Infinite]]''
*''[[Halo: The Television Series]]''

==Sources==
{{Ref/Sources}}

==See also==
*[[Plasma battery]]
*[[Power core]]
*[[Gas container]]
[[Category:Power generation]]