Balmar 12V 170A XT Series Alternator, Single Foot Mount (No Pulley)

High-Output 12V Charging Power for Marine and Off-Grid Systems

When your vessel, expedition vehicle, or heavy-duty off-grid setup demands rapid battery replenishment, a standard automotive charging system often struggles to keep up. The XT Series 170A 12V Alternator is engineered for the high-load demands of large house battery banks, including modern lithium (LiFePO4) and deep-cycle AGM configurations. Featuring a compact, small-case frame and a 1-2 inch (approx. 25.4mm or 50.8mm) single foot (spindle) mount, this high-output alternator delivers substantial amperage where engine bay space is at a premium.

Why Upgrade to a Dedicated High-Output Alternator?

Standard factory alternators are primarily designed to maintain starting batteries and run basic vehicle electronics. When subjected to the prolonged, heavy absorption loads of depleted auxiliary battery banks, standard units frequently overheat, experience severe voltage drop, or fail prematurely. Upgrading to the XT Series solves these thermal and electrical challenges:

• High-Amperage Output: Capable of delivering up to 170A at 12V, significantly reducing engine run-time required to recharge large auxiliary battery banks.
• Thermal Management: Dual-fan cooling and a high-airflow frame help manage heat in enclosed marine engine rooms and tight 4WD engine bays.
• Flexible Mounting Geometry: The 1-2 inch spindle mount suits 1in Motorola-style and 2in Delco-style single foot brackets.
• Custom Drive Adaptability: Supplied without a pulley, allowing you to match the exact belt profile and drive ratio required for your specific engine setup.
• Smart Ready® Technology: Balmar's Smart Ready internal regulator technology adds a level of fault tolerance for cruising boaters.

Important Exclusion: Pulley Required for Installation

To ensure seamless integration with various engine drive belt configurations, this XT Series alternator is supplied without a pulley. Selecting the correct pulley profile and diameter is critical to prevent belt slippage and to optimise the alternator's rotational speed (RPM) for idle and cruising outputs. All compatible pulleys listed below feature a 17mm bore to suit this unit's shaft:

• B-61-0020: Pulley, Dual V 2.7 inch (approx. 68.6mm) x 1/2 inch (approx. 12.7mm) DeepV, 17mm Bore
• B-61-0070: Pulley, K-6 2.45 inch (approx. 62.2mm) Serpentine 6-Rib, 17mm Bore
• B-1310: Pulley, K-8 2.4 inch (approx. 61.0mm) Serpentine 8-Rib, 17mm Bore, Short (STD)

Engineered for Demanding Applications

Whether you are fitting out a bluewater cruising yacht or building a remote touring 4WD, reliable DC power generation is critical. By pairing this 170A 12V alternator with an appropriate external regulator and your chosen drive pulley, you can safely maximise charge acceptance rates for lithium and AGM battery banks alike. This reduces fuel consumption, lowers engine wear from excessive idling, and ensures your onboard refrigeration, inverters, and navigation electronics remain powered.

Upgrade Your Engine's Charging Capability

Configure your ideal engine-driven charging system today. Select the XT Series 170A 12V Alternator along with your matching 17mm bore pulley to achieve dependable, high-capacity power generation on your next voyage or off-grid deployment.