NewMar Battery Chargers

NewMar Phase Three Smart Battery Chargers

NewMar has built a reputation spanning battery chargers and DC power products for over 50 years, serving the marine, telecommunications, land mobile, and industrial sectors. Within the battery charger category specifically, NewMar's engineering philosophy is defined by one central technology: Phase Three "Smart" charging. This proprietary three-stage approach — bulk, absorption, and float — is designed to interact dynamically with the battery rather than simply pushing voltage until the job is done.

Phase Three Technology: How It Works

These chargers interact with batteries to put them through the optimum three-stage charge process, which provides for fastest recovery and ideal conditioning, maximizing battery performance and extending battery life. This stands in sharp contrast to older single-stage float chargers, which continuously apply a fixed voltage and can contribute to battery degradation over time.

The Phase Three lineup's "Smart" circuitry covers a wide model range for battery system ratings from 14 to 950 amp-hours , making it suitable for everything from a small recreational vessel's auxiliary bank to a large commercial workboat or remote industrial communication site.

Battery Type Flexibility

One of NewMar's most practical engineering choices in this lineup is its broad battery chemistry compatibility. A selector switch adjusts output voltage to adapt for proper charging of gel-cell, lead-acid, and AGM battery types. For installations where temperatures fluctuate significantly, an optional temperature compensation sensor adjusts output for ideal voltage based on changes in ambient temperature, improving performance and extending battery life.

Rugged Construction Built for Demanding Environments

NewMar Phase Three chargers are built to last — housed in a rugged stainless steel case with a durable white powder coat finish, a drip shield, and polyurethane-coated internal circuitry. This construction philosophy reflects the marine and industrial environments NewMar serves, where corrosion and moisture are persistent threats to electronics.

All models carry UL 1950 certification, USCG CFR 183.410 ignition protection compliance, and the CE mark, with numerous other safety and EMC compliances also applicable. For professional installers, this compliance breadth matters — it means NewMar chargers are cleared for use aboard vessels where ignition-protected equipment is required by regulation.

Monitoring, Control & Expandability

Multiple isolated output banks allow an ammeter to indicate total output current, an optional sensor adjusts output voltage based on battery temperature, current limiting prevents damage from overloading, and charger status is clearly displayed with LED and/or audible indicators or via an optional remote panel.

With the expansion of communication networks to remote sites and mobile applications where 12 and 24-volt redundant power is essential, the Phase Three Modular (PTM) system was specifically designed to provide rack-mount power redundancy features in a wall-mount unit — a convenient and professional solution for this growing area of network power.

Whether you're re-powering a live-aboard sailboat, maintaining generator start batteries at a remote communications site, or outfitting a workboat for commercial duty, NewMar's Phase Three battery charger lineup delivers purpose-built, compliance-verified performance. Explore the full NewMar brand page or browse the complete battery chargers category to find the right model for your application.