The simplest magitech construct is a small metal core that is charged with magical essence. This can act like a battery for a mechanical structure as a whole, but in general is unreliable. There are any number of reasons for this. It depletes faster, is harder to recharge, and is nearly impossible to know how much magic it contains. Different metals will affect how fast the energy is depleted, and what complexity of magic it can hold. The highest end simple cores can hold multiple types of magic at once. With any simple core, the risk of explosion is present when trying to store many types of magic at once inside. This only increases when more and more are added. 

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The magitech constructs only get more complex as one works upwards, all the way to the imperial airships of the Kyosei fleet. Said airships are complicated mechanisms of levitation (rapidly expending energy like a propulsion), stripping energy from the air around the core, and recycling the energy that they expend. Many times they are just mechanical pieces that use the mana inside of the battery like electricity would. Anything can act as a magitech battery, from shards of metal, crystals, and even things like prosthetic limbs. The idea is that it has to be sturdy enough to contain whatever energy that the user is putting into it. A simple crystal wouldnt contain the amount of power to lift an airship off the ground, after all.

 

The quality of the item impacts how well it stands up to the rapid discharge and recharge of energy. Typically, the rarer that the material is, the better its quality is. Over time, the materials will wear down and begin to falter. If one doesnt replace and repair the tools that they use, the risk of serious injury increases. One who cares little about their magitech will end up with shards of metal and crystals lodged in their soft tissues.

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Magitech weapons often draw upon the magical affinities of the user. Materials can be tempered to sustain elemental energies, though some will have those affinities by default. Examples of this would include crystals found in frozen tundras having better times handling ice magic.

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More complex mechanisms are lined with runes that help by providing extra features to the battery. The examples of an airships recycling its energy is a reference to this. Runes along the battery produce their own fields that catch discharged energy and cycles it back through the structure of the battery. Runes like this would be all along the metal around the battery to further perform such a feature. A rune of this sort would be like any other magical rune, just designed around the process instead of adapted for it. 

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There are more often than not craftsmen in the parts of the world that create magitech whos entire job is to work on and create these constructs. From people who make elemental weaponry to those in Neo Eskaral who make airships. The closer one is to a a city, the more quality one will find in produced magitech.