Batteria fotonica

This work derives the concept of a Photon Battery directly from the closed andself–referential Universal Ψ Lagrangian. While the previously derived Photon Sailreveals the transfer of informational momentum, the Photon Battery demonstratesthe accumulation and release of coherent energy stored in the informational phaseof Ψ. The derivation proceeds explicitly from the dynamic term (V − VΨ)2 of theLagrangian and shows that a stable energy density EΨ = ε(∂tϕ)2 emerges naturallyunder stationary coherence. The system behaves as a non–dissipative cavity thatretains phase potential indefinitely, enabling the storage of coherent energy withoutphoton or charge accumulation.