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Maintenance is one of the technical skills available in System Shock 2.

It governs the use and effectiveness of Disposable Maintenance Tools to maintain ranged weapons, and the maximum charge that can be held in electrically powered items. It has a maximum level of 6, and cannot be temporarily raised by an implant.

The current condition of a ranged weapon can be determined by moving the cursor over the weapon in the inventory or world. When the weapon is equipped, the ammo box will display a colored dot and number corresponding to the condition of the weapon. This value does not change the damage dealt by the weapon ; it is merely a rough guide to how much more wear and tear the weapon can endure before breaking (and then requiring Repair skill or an Auto-Repair Unit).

When a Maintenance Tool is used on a weapon, the condition is improved by a number equal to the current Maintenance skill, but not beyond Perfect condition (10).

More advanced weapons have a minimum level of skill required for a tool to be used:

Minimum Skill Weapon
1 Talon M2A3 .45 Caliber Pistol
Apollo H4 Laser Pistol
2 Shotgun
TC-11 "Brick" Grenade Launcher
3 Stasis Field Generator
Fusion Cannon
4 M-22 Assault Rifle
Viral Proliferator
Annelid Launcher
6 Dual-Circuit EMP Rifle


The Maintenance skill also increases the maximum charge that can be held in implants, energy guns and powered armor. Each point of Maintenance skill adds 10 units of power to the maximum. The maximum charge capacity of those items is thus 160 units.


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