Since 2006 American Power Systems, Inc. has been designing and manufacturing advanced mobile power systems and DC power generators (auxiliary power units) for armored, security, commercial, marine and purpose-built specialty vehicles.

Meet our team.

Founded by the late Thomas K. Evans, for whom the Thomas K. Evans Memorial Scholarship is named, American Power Systems, Inc. specializes in custom design and development of power conversion and distribution systems from 12VDC to 58VDC, up to 10kW for diverse applications. APS products include high output alternators, custom alternator brackets and dual alternator bracket kits, DC-DC boost converters, DC-DC step down converters, high idle switches, and onboard DC power generators.

At our facility in Davenport, Iowa, the APS team evaluates vehicle platforms for a combination of electrical equipment based on customer and industry requirements. We design integrated power systems and perform ambient and catastrophic testing to ensure our products withstand the most severe conditions. You can meet the APS team here.

APS is the preferred supplier of government agencies and fleet operators worldwide to develop and provide power systems and programs to support vehicles and personnel in an array of environments and theatres. 

In March 2020 APS was honored as Small Business Exporter of the Year by the U.S. Small Business Administration (SBA) Region VII office, which includes Iowa, Kansas, Missouri and Nebraska.


We invite you to contact us today to learn more about how we can serve your power needs.

 Our Location



American Power Systems, Inc.
Company Headquarters

426 W. 2nd Street
Davenport, Iowa 52801
United States


International: +1 (563) 323-7994, Ext. 100

Domestic toll-free: (866) 446-8878, Ext. 100

Fax: +1 (563) 323-8089

 Message APS