Timeworn Equipment

However, the technology found in the hands of Numeria's denizens isn't usually in such pristine repair. Between languishing in forgotten ruins open to the elements, being used by those ignorant of the nature of this technology, and having no one skilled at building, maintaining, or repairing such devices, most technological items are "timeworn"-damaged and malfunctioning (when not completely nonfunctional).
  These malfunctions manifest in two ways: limited charges and glitches. Only technological items that consume charges (including nanite canisters) or are pharmaceutical items can be affected by these timeworn rules, though any technological item can still become broken or nonfunctional just as any other item. A piece of timeworn technology may have additional aesthetic and functional differences from a new piece of the same equipment.
  Many of these effects are purely cosmetic, such as cracks in the casing of an arc grenade or primitive etchings on a suit of technological armor placed there by a barbarian millennia ago. Pieces of timeworn technology may also have minor mechanical effects beyond glitches