NOVELTY - A self-charging power pack (300) comprises cathode (312), anode (310) spaced apart from the cathode, an electrolyte (318) disposed between the anode and cathode, and a piezoelectric ion transport layer (322) disposed between the anode and the cathode, the piezoelectric ion transport layer having a piezoelectric property that generates a piezoelectric field when a mechanical force is applied to it, thus causing transportation of ions in the electrolyte through the piezoelectric ion transport layer towards the anode.    USE - As self-charging power pack, particularly self-charging battery, self-charging supper capacitor (claimed), or lithium ion batteries.    ADVANTAGE - The self-charging power pack employs a mechanism that directly hybridizes the two processes into one, in which mechanical energy is directly converted and simultaneously stored as chemical energy without going through the intermediate step of first converting into electricity.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) self-charging battery comprising lithium compound cathode comprising a metal foil layer and a lithium cobalt oxide (LiCoO2) layer disposed adjacent to it, an anode spaced apart from the lithium compound cathode, elongated nanostructures extending upwardly from anode; an electrolyte including lithium hexafluoro phosphate (LiPF6) disposed between the anode and the cathode, and an aligned poly(vinylidene fluoride) (PVDF) polar polymer piezoelectric ion transport layer disposed between the anode and the cathode, the piezoelectric ion transport layer having a piezoelectric property that generates a piezoelectric field when a mechanical force is applied to it, thus causing transportation of lithium ions in the electrolyte through the piezoelectric ion transport layer towards the anode; and    (2) self-charging super capacitor comprising cathode including a metal foam, an anode spaced apart from the cathode, the anode including a metal foam, an electrolyte, including potassium hydroxide, disposed between the anode and the cathode, and piezoelectric ion transport layer disposed between the anode and the cathode.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of battery.    Self-charging power pack (300)    Anode (310)    Cathode (312)    Titanium dioxide nanotubes (314)    Lithium compound layer (316)    Electrolyte (318)    Piezoelectric ion transport layer (322)