Balmar 24V 90A XT Series Alternator, 4in Saddle Mount (No Pulley)

High-Output 24V Charging for Marine and Off-Grid Battery Banks

Upgrading your vessel or vehicle's charging system requires an alternator matched to your battery bank and electrical loads. The XT Series 24V 90A Alternator is engineered for demanding marine and mobile power systems. Featuring a robust 4-inch (approx. 101.6mm) dual foot saddle mount, this unit provides a high-output upgrade for charging large deep-cycle or lithium house battery banks.

Solving the Limitations of Standard Alternators

Standard automotive alternators are designed primarily to replenish starter batteries and run basic vehicle electronics. When tasked with charging deeply depleted 24V house banks, standard units often suffer from rapid thermal degradation, voltage drop, and premature component failure. This XT Series unit mitigates those risks with a braided-stator design and a dual-fan, high-airflow frame, reducing the risk of unexpected power loss in remote off-grid or offshore environments.

Customisable Drive Configuration (No Pulley Included)

To ensure exact compatibility with your specific engine belt geometry and drive ratio requirements, this alternator is supplied without a pulley. This allows system builders and marine mechanics to select the precise pulley profile needed for their engine setup, preventing belt slippage and optimising charging performance at both idle and cruising speeds.

Compatible 17mm Bore Pulley Options (Sold Separately):

• B-61-0020: Pulley, Dual V 2.7in x 1/2in (approx. 68.6mm x 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)

Key Features and System Benefits

• 90A at 24V Output: Delivers substantial charging power to rapidly replenish large-capacity 24V battery banks, reducing engine or generator run-time.
• 4-Inch (Approx. 101.6mm) Dual Foot Mount: J-180 mount, which Balmar lists as typical for John Deere, Cummins and Caterpillar engines.
• Dual-Fan Cooling: A high-airflow frame with dual fans helps manage heat during extended charging.
• Flexible System Integration: Ideal for pairing with external multi-stage alternator regulators to safely and efficiently charge AGM, Gel, or LiFePO4 battery chemistries.

Ideal Applications

This 24V alternator suits recreational 24V DC power generation setups such as:

• Marine engines with 24V house systems
• Custom expedition vehicles and motorhomes

Configure Your Charging System

Ensure your 24V battery bank receives consistent, dependable power when under way. Select the appropriate 17mm bore pulley for your engine drive belt and integrate the XT Series 90A Alternator into your electrical system today.