Balmar XT-DF alternator KIT -12/24V – 90/170/250A

The Balmar XT-DF Alternator Kit is the ultimate, all-in-one charging solution designed for marine engines requiring a 3.15″ dual foot (Hitachi style) mount. Rather than just replacing a part, this kit provides a complete, integrated “smart” charging system that maximises battery health, decreases engine run time, and ensures your vessel has reliable power for even the most demanding house loads.

The Complete Charging System

Buying a high-output alternator is only half the battle. To truly benefit from that power without damaging your batteries or the alternator itself, you need intelligent regulation and thermal monitoring. This kit includes everything you need for a professional-grade installation:

• Balmar XT-DF High-Output Alternator: Features the innovative braided stator design for maximum output in a compact 3.15″ saddle mount frame.
• MC-618 or MC-624 Digital Regulator: The “brains” of the system. These multi-stage regulators communicate with your batteries to provide the exact voltage they need at every stage of the charge cycle (MC-618 for 12V systems, MC-624 for 24V systems).
• Alternator & Battery Temperature Sensors: Critical safety components that automatically reduce output if the alternator gets too hot or stop charging if the battery reaches dangerous temperatures.
• Wiring Harnesses: High-quality, color-coded harnesses to simplify installation and ensure secure electrical connections.

Why Choose the XT-DF Kit?

• Standard Mounting Compatibility: Designed for engines requiring a 3.15″ (80mm) dual foot saddle mount (Hitachi style), common on many Yanmar, Westerbeke and Perkins engines.
• Lithium (LiFePO4) Ready: The included Balmar regulators feature a dedicated Lithium charging profile. When combined with the temperature sensors, they provide the precise control and safety safeguards required to charge modern Lithium banks safely and efficiently.
• Unrivaled Idle Performance: Cruising often involves low-RPM maneuvering or idling at anchor. While standard alternators produce very little at low speeds, the XT-Series is designed to deliver industry-leading output at idle, ensuring your batteries are charging the moment you start the engine.

Kit Components

• Balmar XT-Series Alternator (90A, 170A, or 250A / 12V or 24V)
• MC-618 (12V) or MC-624 (24V) Digital Multi-Stage Regulator
• MC-TS-A Alternator Temperature Sensor
• MC-TS-B Battery Temperature Sensor
• Wiring Harness
• Mounting Hardware & Comprehensive Instruction Manual

Technical Specifications

• Voltage: 12V or 24V options
• Output: 90A, 170A, or 250A options
• Mounting: 3.15″ Dual Foot (Saddle Mount / Hitachi style)
• Regulator Type: External, Multi-Stage Digital
• Internal 14.1V Backup Regulator (SmartReady® technology)
• Case Ground

Installation Notes

• High-output kits require at least a dual v pulley, but preferably a multi-groove serpentine belt to handle the increased mechanical load. If your engine is not already equipped with one, a Balmar AltMount® Serpentine Conversion Kit is required.
• A Tachometer Signal Stabilizer (Part No. 15-TSS) may be required if your current tachometer is not adjustable.

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.