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 also uses lithium metal for the anode instead of graphite. Tests showed the prototype battery maintained over 80% of its charge after 500 charging cycles and it did not catch fire even when pierced with a nail. This new solid-state battery technology could allow for safer, more powerful and reliable electric vehicles and other devices.