12, 24, 48, 130 Vdc iPMs. 2, 4 and 8-slot chassis

Product Features:

Multiple iPMs in a single chassis provide redundancy (N+1, N+2, etc) and will continue to operate if the User Interface Module (UIM) fails for high availability/uptime application.

Mitigate time at work site with individual iPMs that can be removed and replaced while remaining iPMs are in use.

Compliant with the California Energy Commission (CEC) standards.

Industry leading charging performance and intelligence. Our proprietary charge algorithm ensures a precisely charged battery every time.

Lester Electrical chargers are all natural convection cooled (use no fans) ensuring the top performance and protection from environmental hazards.

Alarms can be individually enabled/disabled, assigned a delay, assigned a priority, and assigned to the summary alarm relay. History of 10,000 records saved and downloadable as a CSV file.

Extreme network security is maintained by requiring activation of this on-site feature to make changes to charger.

Lester Electrical HF-MAX Modular Industrial High Frequency Railway Power Battery Charger 12 Volt 24 Volt 48 Volt 130 Volt


Lester Electrical Stationary Power Battery Chargers Railway


Internal Web Server with modern, responsive framework

Lester Electrical High Tech Battery Chargers
High-tech meets the Heartland

For over 30 years, Lester Electrical has been a principal supplier of wayside battery chargers to the rail industry.  We understand that delivering purpose-built battery chargers with leading reliability and best-in-class features is of the utmost importance in this mission-critical, demanding application. In partnership with National Railway Supply (NRS), our exclusive partner for the rail industry in North America, the HF-MAX battery charger platform is trusted by leading Class I, freight, transit, passenger, and short-line railroads, as well as light rail, high-speed rail, and subways.

In North America, contact National Railway Supply (NRS) for all of your railroad signaling, communications, and switch machine battery charging solutions. 

Outside of North America, contact Lester Electrical to discuss your wayside railway battery charging applications and needs.

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