{"product_id":"enerdrive-b-cfii-12-24","title":"Balmar Centerfielder II","description":"\u003ch2\u003eSynchronised Twin-Engine Alternator Charging for 12V and 24V Marine Systems\u003c\/h2\u003e\u003cp\u003eManaging power on a vessel with twin propulsion engines often presents a significant electrical challenge: getting two separate charging systems to work together efficiently. The \u003cstrong\u003eBalmar Centerfielder II (CFII-12\/24)\u003c\/strong\u003e is an intelligent charge-balancing module engineered to unify port and starboard alternators, allowing you to safely and rapidly charge a single large house battery bank using the combined output of both engines.\u003c\/p\u003e\u003cp\u003eDesigned specifically for multihulls, catamarans, and twin-engine powerboats, this system acts as a central coordinator. By constantly monitoring the port and starboard external voltage regulators, the Centerfielder II automatically designates the starboard regulator as the dominant controller when both engines are running. This seamless integration ensures both alternators work in harmony rather than competing against one another.\u003c\/p\u003e\u003ch3\u003eEliminate Regulator Conflict and the \"Yo-Yo\" Effect\u003c\/h3\u003e\u003cp\u003eWhen two independent voltage regulators attempt to charge the same battery bank simultaneously, slight variations in voltage sensing often cause one regulator to shut down prematurely while the other takes the full load. As the battery approaches its target voltage, the two systems can repeatedly cycle on and off in conflict. This phenomenon, known as the \"yo-yo effect\" or alternator chatter, leads to inefficient charging.\u003c\/p\u003e\u003cp\u003eThe Centerfielder II resolves this issue by unifying the field current when both systems are active. If you choose to shut down one engine while cruising or motor-sailing, the unit automatically isolates the regulators and alternators, allowing the single running engine to manage the charging profile independently without manual intervention.\u003c\/p\u003e\u003ch3\u003eKey Features and System Capabilities\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalances Twin-Engine Charging:\u003c\/strong\u003e Combines the output of port and starboard alternators to efficiently charge a single, high-capacity house battery bank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates Alternator Chatter:\u003c\/strong\u003e Unifies field current control to prevent regulators from cycling on and off as batteries near full charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Voltage Compatibility:\u003c\/strong\u003e Fully compatible with both 12V and 24V marine electrical architectures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Single-Engine Isolation:\u003c\/strong\u003e Seamlessly reverts to independent regulator operation when only one propulsion engine is running.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Installation Kit:\u003c\/strong\u003e Includes upgraded regulator power wires and inline fusing for reliable circuit protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable Charging Options:\u003c\/strong\u003e Can be used with the Balmar Digital Duo Charge to charge a second battery.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eImportant Compatibility Requirements\u003c\/h3\u003e\u003cp\u003eThe Centerfielder II is designed exclusively for \u003cstrong\u003eBalmar Max Charge voltage regulators\u003c\/strong\u003e: the \u003cstrong\u003eMC-614\u003c\/strong\u003e and \u003cstrong\u003eMC-618\u003c\/strong\u003e (12V) and the \u003cstrong\u003eMC-624\u003c\/strong\u003e (24V). It cannot be used with internally regulated alternators or the Balmar ARS-5 regulator.\u003c\/p\u003e\u003ch3\u003eEngineered for Demanding Marine Applications\u003c\/h3\u003e\u003cp\u003eRelying on uncoordinated charging systems risks undercharged house banks and overstressed engine room components. By installing a dedicated balancing controller, vessel owners can maximise their alternator investment, reduce engine run times, and maintain healthier battery banks over long voyages.\u003c\/p\u003e\u003ch2\u003eDocuments\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/balmar.net\/wp-content\/uploads\/2018\/04\/PDS-CFII-1224.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBalmar Centerfielder II Installation and Operation Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eUpgrade Your Vessel's Charging Efficiency\u003c\/h3\u003e\u003cp\u003eEquip your twin-engine catamaran or powerboat with the Balmar Centerfielder II to achieve balanced, reliable alternator performance on the water.\u003c\/p\u003e","brand":"Balmar","offers":[{"title":"Default Title","offer_id":43627488444477,"sku":"B-CFII-12-24","price":534.6,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/balmar-centerfielder-ii-charge-balancer-b-cfii-12-24.jpg?v=1792490877","url":"https:\/\/www.solar4rvs.com.au\/products\/enerdrive-b-cfii-12-24","provider":"Solar 4 RVs","version":"1.0","type":"link"}