After the In-isa Shrine, a construct will give you the Energy Cell, and it informs you that it will power Zonai devices. Image Source: Nintendo via Twinfinite Though to use it, you are pointed toward ...

A The Legend of Zelda: Tears of the Kingdom player has harnessed the power of a handy glitch to create the game’s first perpetual flying machine, which makes use of zero batteries or despawning parts.