What We Offer
Recreational Vehicle Products
Recreational Vehicle power conversion and battery charging products enhanced by our patented Charge Wizard® 4-stage battery management system. This management system constantly monitors voltage status and automatically manages your battery. - Read More
A complete range of Marine battery chargers from 20 to 80 Amps. Features a digital display screen, plus a unique patented micro-processer controlled four-stage charging system that offers rapid recharge and two to three times longer battery life. - Read More
Service Hours – 8:30 A.M. to 4:30 P.M.
Eastern Standard Time
Get in Touch!
Progressive Dynamics, Inc.
507 Industrial Road
Marshall, MI 49068 USA
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About Progressive Dynamics, Inc.
Progressive Dynamics, Inc. is a privately owned corporation, established in Marshall Michigan in 1964. Its initial product was a high-quality LP gas regulator manufactured for use in recreational vehicle heating and cooking systems. Since 1968, PDI has been producing power converters and battery charging systems for the RV industry. - Read More
Our patented Charge Wizard® 4-stage system constantly monitors RV batteries and automatically adjusts your converter output voltage. - Read More
Progressive Dynamics Inc. converter chargers are being advertised on Amazon, Yahoo and Face Book under the name of Progressive International. This name is to imply that Progressive Dynamics is somehow involved with Progressive International and we are not. The real Progressive International sells RV kitchen products and not converter chargers. Progressive Dynamics and the real Progressive International only sell through authorized RV distribution companies and RV dealers.