SEI Industries’ BATT is a collapsible tank for transporting fuel in an aircraft. The patented baffling system of the inner tank (US Patent No. 10029848), the sturdy fabric of the outer tank, and the harness straps ensure that fuel transport with a BATT is safer, greener, and more economical than hauling oil drums. SEI was the first company to receive a Transportation of Dangerous Goods Equivalency Certificate (SA 10638) for this kind of tank.