(Davenport, IA) American Power Systems, Inc. (APS) has launched an all-new, groundbreaking high-output alternator series providing more output across the board at both lower and upper RPM. In addition, the increased power output at lower RPM means faster charging capability at lower speeds, including at idle.The Ultra Performance at Idle (UPI) series is APS’ next-generation line of alternators based on their original High Performance at Idle (HPI) alternator series. The new alternators share the same