The Autonomous Portable Refrigeration Unit (APRU) is an FDA listed device that provides constant cooling of blood products, vaccines, and temperature-controlled medications using a standard Military Battery with a 95-hour run-time. The APRU, also known as “The DELTA®,” has intuitive on-screen controls and records stored temperature for up to 72 days. Its heating and cooling capability ensures stable temperature in all austere environments spanning the realms of military operations, disaster relief response, and emergency medical systems.