This document describes a new type of battery that is safer and longer lasting than current lithium-ion batteries. The battery replaces the flammable liquid electrolyte with a solid electrolyte made of ceramics and polymers. It maintains the same energy density and power as lithium-ion batteries, but the solid electrolyte prevents short circuits and allows faster charging. The solid-state battery prototype demonstrated stability over hundreds of charge-discharge cycles, showing its potential to improve electric vehicles and consumer electronics.