Balmar 97XD Alternators

The Balmar 97XD (Extra Duty) Series is the premier “Large Case” 12 and 24V charging solution designed for vessels with extreme power requirements. Engineered for continuous, high-load operation on commercial-grade diesel engines, the 97XD series delivers massive amperage with industrial-level durability. Whether you are managing a high-capacity 24V system, or a massive 12V house bank, the 97XD is the definitive choice for reliability in the harshest marine environments.

Product Description

• Industrial-Strength Power Production: The Balmar 97XD Series is built on a heavy-duty large frame designed to handle the intense heat and mechanical stress of high-amperage energy production.
• Unrivalled Thermal Efficiency: High-output charging generates significant heat. The 97XD manages this through its massive surface area and a high-airflow housing design. This allows the alternator to maintain its peak output for extended periods without the thermal derating common in smaller frames. This “cool running” capability is essential for safely charging modern, low-resistance battery chemistries like Lithium (LiFePO4) and large AGM banks that can accept high current for hours at a time.
• Smart “Extra Duty” Regulation: The 97XD is designed strictly for external regulation to ensure maximum battery health and alternator protection. To unlock the full potential of this unit, we recommend pairing it with the Balmar MC-618 (12V) or MC-624 (24V) Digital Regulator. This combination provides multi-stage “smart” charging, alternator temperature monitoring, and the ability to program specialised profiles for Lithium systems.

Key Features

• Large Case Frame: Superior heat dissipation for continuous, high-load operation.
• High Amperage Options: Available in massive 12V (240A) and 24V (120A/190A) configurations.
• J-180 Dual-Foot Mount: Designed for the 4-inch (100mm) saddle mount common on heavy-duty diesel engines from Cummins, Caterpillar, and John Deere.

Technical Specifications

• Voltage: 12V or 24V options
• Amperage: 120A, 190A, or 240A
• Mounting: 4″ Dual Foot (J-180 style)
• Grounding: Isolated and Case Ground
• Regulator Type: Requires External Multi-Stage Regulation
• Pulley: Typically supplied with K6

Note for Installation:

Due to the extreme torque and mechanical load produced by the 97XD series, these units must be installed with a high-quality multi-groove serpentine belt system.

Country of Manufacture: USA

Brand

Balmar

Balmar has been serving the Recreational Marine Industry for over 30 years. We supply DC Charging Products and Battery Monitors to help sailors and power boaters charge and monitor their batteries more efficiently.