{"product_id":"enerdrive-b-xt-sf-250-sp","title":"Balmar 12V 250A XT Series Alternator, Single Foot Mount (No Pulley)","description":"\u003ch2\u003eHigh-Output 250A 12V Charging Power for Demanding Electrical Systems\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eXT Series 250A 12V Alternator\u003c\/strong\u003e is engineered to meet the high energy demands of modern marine vessels and off-grid expedition builds. Featuring a 1-2in (Approx. 25.4mm or 50.8mm) single foot (spindle) mount, this high-output alternator is designed as a robust power generation upgrade for systems running large auxiliary battery banks, high-draw inverters, and critical onboard electronics.\u003c\/p\u003e\u003cp\u003eStandard factory alternators are typically designed for intermittent loads and often suffer from rapid thermal degradation when tasked with charging low-impedance lithium (LiFePO4) or large AGM battery banks. The XT Series mitigates the risk of overheating and premature component failure with a braided-stator design and a dual-fan, high-airflow frame, ensuring reliable power generation when you are far from shore power or the grid.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstantial 250A Output at 12V:\u003c\/strong\u003e Delivers rapid bulk charging to large house battery banks, significantly reducing engine run-time and fuel consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Foot (SF) Mount:\u003c\/strong\u003e 1-2in spindle mount suits 1in Motorola-style and 2in Delco-style single foot brackets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomisable Drive Configuration:\u003c\/strong\u003e Supplied without a pulley to allow precise matching to your engine's specific belt drive system and ratio requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Fan Cooling:\u003c\/strong\u003e A high-airflow frame with dual fans helps manage heat when charging large lithium and AGM banks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17mm Shaft Bore Compatibility:\u003c\/strong\u003e Accepts a range of Dual V and multi-rib serpentine pulleys for seamless integration into existing setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Upgrade to a High-Output XT Series Alternator?\u003c\/h3\u003e\u003cp\u003eUpgrading your battery storage capacity requires a corresponding upgrade in charging capability. Attempting to charge a high-capacity lithium system with an OEM-grade alternator places immense strain on the stator and rectifier, often leading to system failure in remote locations. The XT Series 250A alternator solves this problem by providing additional charging headroom. By pairing this unit with an appropriate external voltage regulator, users can safely optimise charge profiles for their battery chemistry.\u003c\/p\u003e\u003ch3\u003eImportant Exclusions and Compatible Pulley Options\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e This alternator is supplied \u003cstrong\u003ewithout a pulley\u003c\/strong\u003e to accommodate custom engine configurations. To complete your installation, select one of the compatible 17mm bore pulleys listed below based on your belt drive type:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eB-61-0020:\u003c\/strong\u003e Pulley, Dual V 2.7in (Approx. 68.6mm) x 1\/2in (Approx. 12.7mm) DeepV, 17mm Bore\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB-61-0070:\u003c\/strong\u003e Pulley, K-6 2.45in (Approx. 62.2mm) Serpentine 6-Rib, 17mm Bore\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB-1310:\u003c\/strong\u003e Pulley, K-8 2.4in (Approx. 61mm) Serpentine 8-Rib, 17mm Bore, Short (STD)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Vessels:\u003c\/strong\u003e Yachts and cruisers requiring rapid replenishment of house banks during short motoring intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4WD and Expedition Vehicles:\u003c\/strong\u003e Overland builds with custom dual-alternator brackets powering air conditioning, induction cooktops, and large inverters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUpgrade Your Onboard Power Generation\u003c\/h3\u003e\u003cp\u003eConfigure your custom charging system with the XT Series 250A 12V Single Foot Alternator and select the matching 17mm bore pulley for your engine drive to ensure dependable, high-capacity power delivery on every journey.\u003c\/p\u003e","brand":"Balmar","offers":[{"title":"Default Title","offer_id":43629786202173,"sku":"B-XT-SF-250-SP","price":1774.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/balmar-xt-series-250a-12v-alternator-b-xt-sf-250-sp.jpg?v=1792490707","url":"https:\/\/www.solar4rvs.com.au\/products\/enerdrive-b-xt-sf-250-sp","provider":"Solar 4 RVs","version":"1.0","type":"link"}