Balmar 24V 90A XT Series Alternator, Single Foot Mount (No Pulley)

High-Output 24V Charging for Marine and Off-Grid Power Systems

Upgrading your vessel or off-grid vehicle's charging system requires components matched to its electrical loads. The XT Series 90A 24V Alternator is engineered for demanding marine and RV applications where standard automotive units often fail due to heat exhaustion. Featuring a small case frame with a 1-2in (approx. 25.4mm or 50.8mm) single foot (spindle) mount, this high-output alternator delivers reliable energy generation to keep your auxiliary battery banks fully charged.

Why Upgrade to a High-Output XT Series Alternator?

Standard factory alternators are typically designed to maintain a starting battery and run basic vehicle electronics, rather than recharging deep-cycle house banks. When subjected to the constant high-amperage demands of lithium (LiFePO4) or large AGM battery banks, standard units can rapidly overheat, leading to premature failure and system downtime. The XT Series addresses this with a braided-stator design and a dual-fan, high-airflow frame, significantly reducing the risk of power loss in remote locations or out at sea.

• Robust 24V 90A Output: Delivers consistent amperage to efficiently replenish depleted 24V house battery banks, reducing engine run time and fuel consumption.
• Single Foot (SF) Mounting: Features a 1-2in spindle mount that suits 1in Motorola-style and 2in Delco-style single foot brackets.
• Customisable Drive Interface: Supplied without a pulley, allowing you to match the exact belt profile and ratio required for your specific engine setup.
• Dual-Fan Cooling: A high-airflow frame with dual fans helps manage heat in warm engine rooms.

Important Exclusion: Pulley Sold Separately

To ensure seamless integration with your existing engine belt configuration, this alternator is supplied without a pulley. Because engines use varying belt widths and styles, purchasing the pulley separately ensures correct alignment and prevents belt slippage or premature wear. The unit features a standard 17mm shaft bore and is compatible with the following pulley options:

• 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)

Engineered for Demanding Applications

Whether you are fitting out a bluewater cruiser or upgrading an expedition vehicle, reliable 24V power generation is critical. By pairing this XT Series alternator with the appropriate pulley and an external regulator (where applicable), you can achieve a tailored charging profile that maximises battery lifespan and system efficiency.

Select the compatible 17mm bore pulley from the options above and upgrade your 24V engine charging system today for dependable off-grid performance.