Balmar 12V 250A XT Series Alternator, 3.15in Saddle Mount (No Pulley)

High-Output 250A 12V Charging Power for Demanding Off-Grid and Marine Systems

The XT Series 250A 12V Alternator is engineered to meet the energy demands of modern marine vessels and off-grid recreational setups. Featuring a robust 3.15in (approx. 80mm) dual foot saddle mount, this high-output alternator is designed as a charging upgrade for engines requiring substantial DC power generation. Whether you are running large inverter loads, air conditioning, or rapidly recharging a high-capacity lithium (LiFePO4) battery bank, the XT Series delivers consistent, reliable amperage where standard automotive alternators fall short.

Solving the Challenges of High-Load Battery Charging

Standard factory alternators are typically designed for intermittent loads and can quickly overheat and fail when subjected to the continuous, low-resistance charge acceptance of large AGM or lithium house battery banks. Its braided-stator design and dual-fan, high-airflow frame help reduce the risk of overheating and premature component failure. By upgrading to a dedicated high-output alternator, you reduce engine run-time required for battery charging, saving fuel and minimising engine wear during off-grid stays or at anchor.

Key Features and Benefits

• Massive 250A Output at 12V: Provides rapid bulk charging for large deep-cycle and lithium battery banks, significantly reducing generator or main engine run times.
• 3.15in (Approx. 80mm) Dual Foot Mount: Hitachi-style mounting, which Balmar lists as typical for Yanmar, Westerbeke, Lehman and Perkins-Sabre engines.
• Customisable Drive Configuration: Supplied without a pulley, allowing you to match the exact belt profile and drive ratio required by your specific engine setup.
• Dual-Fan Cooling: A high-airflow frame with dual fans helps manage heat during heavy charging.

Pulley Selection and Compatibility

Please note that this unit is supplied without a pulley to allow for custom configuration based on your engine's belt drive system. It features a standard 17mm shaft bore, compatible with the following pulley options depending on your belt style:

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

Ideal Applications

This 250A 12V alternator is an exceptional choice for system builders and technicians working on:

• Marine Vessels: Yachts and cruisers needing fast replenishment of house batteries between anchorages.
• Recreational Vehicles: Motorhomes, 4WD expedition vehicles, and overland trucks running high-draw 12V appliances.

Upgrade Your Engine's Charging Capability

Take control of your off-grid or marine power generation with a purpose-built charging solution. Select the appropriate pulley from the options above and add the XT Series 250A 12V Alternator to your system today for dependable, high-capacity energy on every journey.