Cloud and battery are the twin afterlives of contemporary energy: one promises infinite preservation, the other promises clean transition, yet both depend on hidden extraction, restricted architectures and spectral remainders. CloudTomb begins with the data centre, where memory is removed from sight and kept alive through land, electricity, cooling, servers, cables, water, rare minerals and controlled access; BatteryRelic begins with lithium, where future belief is stored inside mined matter, geopolitical dependency, patents, factories and sacrificed territories. Their laws are forms of enclosure. The data centre governs what may persist, who retrieves it, who owns it and when it disappears; the patent governs who may manufacture, profit, improve or imitate the chemistry of transition. Their tools make absence operational. The server receives, mirrors and delivers memory while erasing its own material cost from the user’s perception; the drone converts stored energy into remote agency, extending the eye, weapon, sensor, delivery route and agricultural monitor beyond bodily presence. Their foods reveal preservation as alteration. Salt names the ancient logic of keeping by drying, stabilising and delaying decay, now transferred to digital formats, backups and duplicated files; soy names the planetary food-energy nexus, where monoculture, feed, land conversion and commodity chains show that clean transition cannot be separated from edible extraction. Their deaths are archival wounds. The cloud leaves the ghost-file, a trace persisting beyond living relation; the battery leaves extinction-memory, the species loss, poisoned water, obsolete device and damaged territory hidden inside technological hope. In WorldMetabolism, these figures converge: solar grid, protocol, algorithm, seed and living archive show that no object exists alone. Matter becomes culture when it is energised, ruled, tooled, consumed and remembered. The final lesson is not rejection but literacy: to inherit the future ethically, one must read every promise of preservation and transition through the material deaths it stores.