• RV power converters and battery charging systems available from Progressive Dynamics

    Quality Recreational Vehicle Products for the RV industry

    Since 1964, Progressive Dynamics, Inc. has been the source of bright ideas for the RV industry. Our reputation for being an industry leader is well established and one that we work very hard to maintain.



  • Marine power converters and marine battery chargers from Progressive Dynamics

    Marine Products from
    Progressive Dynamics

    In 1998, we expanded our intelligent battery charging systems by developing the Inteli-Power Marine™ Series of battery chargers for the Marine Industry. Models are designed to meet the rugged environmental requirements and are Marine UL listed.



  • RV power converters and other charging products available

    Specialty Products from
    Progressive Dynamics

    Specialty products from Progressive Dynamics, Inc. are suited for various specialty vehicles and other applications for a range of industries.



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

Marine Products

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

Specialty Products

Specialty products from Progressive Dynamics, Inc. are suited for various specialty vehicles and other applications for a range of industries. - Read More

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 Services

Service Hours – 8:30 A.M. to 4:30 P.M.
Eastern Standard Time
Pho: 269-781-4242
Fax: 269-781-8729

Get in Touch!

Progressive Dynamics, Inc.
507 Industrial Road
Marshall, MI 49068 USA

Pho: 269.781.4241
Fax: 269.781.7802

Contact Us

Click here for parts at a reduced price.

Progressive Dynamics is a proud member of RVAA RVIA RVDA

Informational and interactive video features electrical systems and components of standard RVs and motorhomes - Watch Now

Customer Feedback Form

Thank you for purchasing a Progressive Dynamics product. Your feedback is important to us. Please take a moment to fill out our customer feedback form.

Power Converters interactive video

Charge Wizard interactive video

Our patented Charge Wizard® 4-stage system constantly monitors RV batteries and automatically adjusts your converter output voltage - Read More

As of January 1, 2016, the hot buss in our model PD4045 and PD4060 is no longer supplied by Progressive Dynamics as it is not required for the proper function of the power center. If you have any questions, please feel free to contact our Service Department at 269-781-4242.

Note: 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.