A cold-start battery being tested by the U.S. Army Engineer Research and Development Center’s Cold Regions Research and Engineering Laboratory (CRREL) is attached to a simulated Stryker engine starter, which sits inside one a cold room inside CRREL’s Cold Room Complex, which consists of 26 refrigerated rooms, each varying in size and in other capabilities, allowing for a variety of environmentally controlled experimentation at low temperatures. These laboratory-grade rooms can maintain temperatures from −30°C to over 43°C (−22°F to 110°F), with an additional standalone unit extending to −40°C (−40°F). The CRREL-designed battery is intended for use with U.S. military Stryker vehicles to ensure they are able to consistently start even in the most extreme cold environments.