Field Upgrades are gameplay features in Battlefield 2142 and Battlefield 4. They are awarded to all members of a squad upon the completion of various actions. They are awarded to all members of a squad when they follow attack or defend orders issued by the Commander by either killing enemies, resupplying, healing, or reviving teammates. Field Upgrades allow players to temporarily use previously locked items that are one level higher on their original unlock tree without the need to buy them with credits. Field Upgrades are available to players until they disconnect from the server. If a player unlocks the item which they are currently using as a Field Upgrade, the next unlock will not become available to use as a Field Upgrade until they leave the current server.
Certain unlocks are only available after purchasing Northern Strike, which are on top of all other unlocks in the unlock trees of the core game. Field Upgrades also allow players without Northern Strike to have temporary access to the upgrades that are normally only available in the expansion. Field Upgrades can only be used on ranked servers.
The Staminar 9 Recovery System is also a swallowed capsule, immediately accelerating muscle recovery so one can regain sprint speed in less time. Automatically administered prior to combat, the capsule is long-lasting with no side effects.
Permanently increases the player's sprint recharge rate. A player with both unlocks can sprint further, and recover their sprint meter in the same time as an unaided player.
Sprintcor 20 Enhanced Endurance
The Sprintcor 20 Enhanced Endurance is an orally ingested, immediately activated energy boost, increasing a person’s sprint capacity. Automatically administered prior to combat, the effects of Sprintcor will last throughout a battle’s duration.
Permanently increases the player's sprint capacity. When not wearing heavy armor, the player can sprint the maximum distance allowed. However, the player's sprint gauge recovers at the same rate, meaning extra time must be spent to recover from a long sprint.
SAB-1b Shock Absorber Boot
Equippable item that is able to absorb up to 60 points of fall damage to allow for a better chance to survive a fall.
Increases the ammunition capacity of Handguns. The capacity of the P33 Pereira is increased from 8 to 10 while the capacity of the Takao T20 is increased from 12 to 15. Due to the fact that the Engineer is not equipped with a pistol, SMGs gain one extra magazine in reserve.
Utilizing a movement compensation sensor to grant temporary rifle stability, the Gruber 5 Scope Stabilizer System facilitates target acquisition. The Gruber’s power supply allows for nearly limitless repeat uses of the system, though the power levels demanded by the system require a significant recharge period between uses.
Available for the Sniper Rifles of the Recon class, it allows the player to hold their breath and stabilize the rifle's scope sway. This is accomplished by holding down the Sprint.
DysTek Hi-Scope X4
DysTek Hi-Scope X4 is an enhanced accuracy optical system utilizing an upgraded electronics and sensor package to provide the user with a greatly enhanced zoom level and the ability to set its zoom level.
Available for the Recon class, it equips a high powered scope on rifles such as the Morretti SR4. As the name suggests, it allows the user to manually zoom up to a magnification of x4 more than the default scope by scrolling in with the mouse wheel.
Available for the Support class, it increases the rate at which ammunition and supplies are resupplied from the Ammo Hub. It also allows a Support soldier inside a vehicle to resupply infantry outside the vehicle, as well as other vehicles.
Advanced Medic Hub
An upgraded version of the standard-issue Medical Hub, the Advanced Med Hub includes an additional supply of antibiotics, health revivers and muscle stimulants including soloxil, dyphatine, and quivinol, expediting a medic’s health provision capabilities.
Available for the Medic class, it increases the healing rate, and also allows an Assault soldier inside a vehicle to heal infantry outside the vehicle.
DysTek Repair v2.0
Available for the Repair Tool, it increases the tool's repair rate and allows an Engineer occupying a vehicle to repair nearby vehicles.
IT-33 Active Camouflage
Mimicking ambient light and background texture patterns through a microprocessor-controlled, fiber-optic, DLD (dynamic liquid display) fabric, the IT-33 Active Camouflage enables a soldier to reduce his visibility by up to 90%.
Available for the Recon kit, the IT-33 Active Camouflage gadget makes the player 90% transparent. While not completely invisible, the likelyhood of detection by enemy forces is greatly reduced.