{"title":"Split Charge Diodes","description":"\u003ch2\u003eMarine Split Charge Diodes for Battery Isolation\u003c\/h2\u003e\u003cp\u003eSimple, reliable battery isolation using split charge diodes. Our collection features diode-based battery isolators that prevent house battery discharge from affecting engine starting batteries.\u003c\/p\u003e\u003cp\u003eSplit charge diodes provide automatic battery isolation with no moving parts, ensuring your starting battery remains charged while allowing house batteries to charge from the alternator. Essential for safe operation on all vessels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBattery Isolation:\u003c\/strong\u003e Part of our \u003ca href=\"\/collections\/battery-isolators\"\u003eBattery Isolators collection\u003c\/a\u003e. Compare with \u003ca href=\"\/collections\/split-charge-relays\"\u003esplit charge relays (VSR)\u003c\/a\u003e for more efficient charging. Use with \u003ca href=\"\/collections\/agm\"\u003eAGM\u003c\/a\u003e or \u003ca href=\"\/collections\/lithium\"\u003elithium batteries\u003c\/a\u003e. Essential for \u003ca href=\"\/collections\/batteries\"\u003emulti-battery systems\u003c\/a\u003e. Pair with \u003ca href=\"\/collections\/battery-chargers\"\u003ebattery chargers\u003c\/a\u003e and \u003ca href=\"\/collections\/monitoring\"\u003ebattery monitors\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"mastervolt-battery-mate-1602-ig-83116025","title":"Mastervolt Battery Mate 1602 IG","description":"\u003cp\u003eThe Mastervolt Battery Mate 1602 IG is an electronic battery isolator that charges two independent battery banks from a single alternator or battery charger. Unlike conventional diode splitters, its MOSFET technology compensates for the voltage drop, so charging continues at the correct voltage level and the batteries charge quickly and fully without any adjustment to the alternator.\u003c\/p\u003e\n\u003cp\u003eBecause the voltage loss between the alternator and the batteries is negligible, the Battery Mate performs far better than a diode isolator. It is compatible with any type of alternator or battery charger, in both existing and new systems, even where the charge voltage cannot be adjusted. The 1602 IG suits alternators with a maximum charge current of up to 160 A.\u003c\/p\u003e\n\u003cp\u003eA LED on the unit indicates when the power input is active. The corrosion-proof construction uses aluminium heat sinks with the electronic components encased in synthetic material, and the synthetic end plates carry the connection lugs for fast, secure installation.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":55973190140244,"sku":"83116025","price":216.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/legacy-687c3b91.jpg?v=1781903766"},{"product_id":"mastervolt-83125035","title":"Mastervolt Battery Mate 2503 IG","description":"\u003cp\u003eThe Mastervolt Battery Mate 2503 IG is a high-capacity electronic battery isolator that charges three independent battery banks from a single alternator or battery charger. Unlike conventional diode splitters, its MOSFET technology compensates for the voltage drop, so charging continues at the correct voltage level and every battery charges quickly and fully without any adjustment to the alternator.\u003c\/p\u003e\n\u003cp\u003eBecause the voltage loss between the alternator and the batteries is negligible, the Battery Mate performs far better than a diode isolator. It is compatible with any type of alternator or battery charger, in both existing and new systems, even where the charge voltage cannot be adjusted. The 2503 IG is ideal for larger systems with alternators up to a 250 A charge current.\u003c\/p\u003e\n\u003cp\u003eA LED on the unit indicates when the power input is active. The corrosion-proof construction uses aluminium heat sinks with the electronic components encased in synthetic material, and the synthetic end plates carry the connection lugs for fast, secure installation.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":55973190566228,"sku":"83125035","price":301.85,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/legacy-9539595e.jpg?v=1781903767"},{"product_id":"mastervolt-83116035","title":"Mastervolt Battery Mate 1603 IG","description":"\u003cp\u003eThe Mastervolt Battery Mate 1603 IG is an electronic battery isolator that charges three independent battery banks from a single alternator or battery charger. Unlike conventional diode splitters, its MOSFET technology compensates for the voltage drop, so charging continues at the correct voltage level and every battery charges quickly and fully without any adjustment to the alternator.\u003c\/p\u003e\n\u003cp\u003eBecause the voltage loss between the alternator and the batteries is negligible, the Battery Mate performs far better than a diode isolator. It is compatible with any type of alternator or battery charger, in both existing and new systems, even where the charge voltage cannot be adjusted. The 1603 IG suits alternators with a maximum charge current of up to 160 A.\u003c\/p\u003e\n\u003cp\u003eA LED on the unit indicates when the power input is active. The corrosion-proof construction uses aluminium heat sinks with the electronic components encased in synthetic material, and the synthetic end plates carry the connection lugs for fast, secure installation.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":55973258101076,"sku":"83116035","price":242.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/legacy-ab9b5389.jpg?v=1781903766"},{"product_id":"battery-isolating-splitter-fet-based-100a-2-outputs","title":"Victron Argofet Battery Isolator 100A (2 Outputs)","description":"\u003cp\u003eThe Victron Argofet Battery Isolator 100A charges two independent battery banks from a single alternator or charger while keeping them fully isolated from one another. Discharging one bank, such as a domestic service battery, can never flatten the other, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eUnlike diode isolators, the Argofet uses FET (field-effect transistor) technology with virtually no voltage loss: the drop is under 0.02 V at low current and averages just 0.1 V at higher currents. Because there is almost no drop, there is no need to raise the alternator output voltage, so charging stays accurate and batteries reach a full state of charge. A current-limited alternator energize input supplies B+ when the engine run switch is closed, so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and needs no maintenance. M8 bolt connections and a compact enclosure suit marine, motorhome and off-grid installations where two banks must share one charge source without the losses of a diode splitter.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272573301076,"sku":"ARG100201020","price":80.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553401389396.jpg?v=1783006601"},{"product_id":"battery-isolating-splitter-fet-based-100a-3-outputs","title":"Victron Argofet Battery Isolator 100A (3 Outputs)","description":"\u003cp\u003eThe Victron Argofet Battery Isolator 100A charges three independent battery banks from a single alternator or charger while keeping all three fully isolated from one another. Discharging one bank, such as a domestic service battery, will not draw down the others, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eUnlike diode isolators, the Argofet uses FET (field-effect transistor) technology with virtually no voltage loss: the drop is under 0.02 V at low current and averages just 0.1 V at higher currents. Because there is almost no drop, there is no need to raise the alternator output voltage, so charging stays accurate and batteries reach a full state of charge. A current-limited alternator energize input supplies B+ when the engine run switch is closed, so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and needs no maintenance. M8 bolt connections and a compact enclosure suit marine, motorhome and off-grid installations where up to three banks share one charge source without the losses of a diode splitter.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272573333844,"sku":"ARG100301020","price":93.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553401454932.jpg?v=1783006605"},{"product_id":"battery-isolating-splitter-fet-based-200a-2-outputs","title":"Victron Argofet Battery Isolator 200A (2 Outputs)","description":null,"brand":"Victron","offers":[{"title":"Default Title","offer_id":56272574054740,"sku":"ARG200201020","price":96.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553401487700.jpg?v=1783006607"},{"product_id":"battery-isolating-splitter-fet-based-200a-3-outputs","title":"Victron Argofet Battery Isolator 200A (3 Outputs)","description":"\u003cp\u003eThe Victron Argofet Battery Isolator 200A charges three independent battery banks from a single high-output alternator or charger while keeping all three fully isolated from one another. Discharging one bank, such as a domestic service battery, will not draw down the others, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eUnlike diode isolators, the Argofet uses FET (field-effect transistor) technology with virtually no voltage loss: the drop is under 0.02 V at low current and averages just 0.1 V at higher currents. Because there is almost no drop, there is no need to raise the alternator output voltage, so charging stays accurate and batteries reach a full state of charge. A current-limited alternator energize input supplies B+ when the engine run switch is closed, so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and needs no maintenance. M8 bolt connections and a compact enclosure suit marine, motorhome and off-grid installations with large alternators where up to three banks share one charge source without the losses of a diode splitter.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272574382420,"sku":"ARG200301020","price":113.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553401553236.jpg?v=1783006610"},{"product_id":"battery-isolating-diode-splitter-80a-2-outputs","title":"Victron Argo Diode Battery Isolator 80A (2 Outputs)","description":"\u003cp\u003eThe Victron Argo Diode Battery Isolator 80A charges two independent battery banks from a single alternator or charger while keeping them fully isolated from one another. Discharging one bank, such as a domestic service battery, can never flatten the other, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eIsolation is achieved with Schottky diodes, giving a low forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode lets you nudge the alternator output voltage up slightly to offset this drop, and an alternator energize input supplies B+ when the engine run switch is closed so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and requires no maintenance or control wiring. Its compact steel enclosure suits marine, motorhome and off-grid installations where two banks must share one charge source.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272651518292,"sku":"ARG080201000","price":40.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553408598356.jpg?v=1783006636"},{"product_id":"argo-battery-isolating-diode-splitter-120a-2-outputs","title":"Victron Argo Diode Battery Isolator 120A (2 Outputs)","description":"\u003cp\u003eThe Victron Argo Diode Battery Isolator 120A charges two independent battery banks from a single alternator or charger while keeping them fully isolated from one another. Discharging one bank, such as a domestic service battery, can never flatten the other, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eIsolation is achieved with Schottky diodes, giving a low forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode lets you nudge the alternator output voltage up slightly to offset this drop, and an alternator energize input supplies B+ when the engine run switch is closed so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and requires no control wiring or maintenance. Heavy-duty M8 stud connections and a compact steel enclosure suit marine, motorhome and off-grid installations where two banks must share one higher-output charge source.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272653058388,"sku":"ARG120201020R","price":61.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553409024340.jpg?v=1783006639"},{"product_id":"argo-battery-isolating-diode-splitter-160a-2-outputs","title":"Victron Argo Diode Battery Isolator 160A (2 Outputs)","description":"\u003cp\u003eThe Victron Argo Diode Battery Isolator 160A charges two independent battery banks from a single alternator or charger while keeping them fully isolated from one another. Discharging one bank, such as a domestic service battery, can never flatten the other, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eIsolation is achieved with Schottky diodes, giving a low forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode lets you nudge the alternator output voltage up slightly to offset this drop, and an alternator energize input supplies B+ when the engine run switch is closed so machine-sensing alternators start charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and requires no control wiring or maintenance. Heavy-duty M8 stud connections and a compact steel enclosure suit marine, motorhome and off-grid installations where two banks must share one high-output charge source.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272655450452,"sku":"ARG160201020","price":73.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553409253716.jpg?v=1783006641"},{"product_id":"argo-battery-isolating-schotty-diode-splitter-low-volt-drop","title":"Victron Argo Diode Battery Isolator 80A Schottky (2 Outputs)","description":"\u003cp\u003eThe Victron Argo Diode Battery Isolator 80A (Schottky) charges two independent battery banks from a single alternator or charger while keeping them fully isolated. Discharging one bank, such as a domestic service battery, cannot flatten the other, so the engine start battery stays protected and ready to crank.\u003c\/p\u003e\u003cp\u003eThis version uses low-drop Schottky diodes for isolation, giving a forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode allows the alternator output voltage to be raised slightly to offset the diode drop. It is the base 80A model without an alternator energize input, suiting installations whose alternator does not need external B+ excitation.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and needs no control wiring or maintenance. Its compact steel enclosure suits marine, motorhome and off-grid setups where two banks share one charge source.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272659317076,"sku":"ARG080202000","price":31.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553410007380.jpg?v=1783006654"},{"product_id":"argo-battery-isolating-diode-splitter-100a-3-outputs","title":"Victron Argo Diode Battery Isolator 100A (3 Outputs)","description":null,"brand":"Victron","offers":[{"title":"Default Title","offer_id":56272718070100,"sku":"ARG100301000R","price":54.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553415709012.jpg?v=1783006428"},{"product_id":"argo-battery-isolating-diode-splitter-140a-3-outputs","title":"Victron Argo Diode Battery Isolator 140A (3 Outputs)","description":"\u003cp\u003eThe Victron Argo Diode Battery Isolator 140A charges three independent battery banks from a single alternator or charger while keeping all three fully isolated from one another. Discharging one bank, such as a domestic service battery, will not draw down the others, so the engine start battery is always protected and ready.\u003c\/p\u003e\u003cp\u003eIsolation uses Schottky diodes for a low forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode lets you raise the alternator output voltage slightly to offset this drop, and an alternator energize input supplies B+ when the engine run switch is closed so machine-sensing alternators begin charging reliably.\u003c\/p\u003e\u003cp\u003eThe isolator adjusts automatically to 12 V or 24 V systems and needs no control wiring or maintenance. Heavy-duty M8 stud connections and a compact steel enclosure suit marine, motorhome and off-grid installations where up to three banks share one higher-output charge source.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":56272718233940,"sku":"ARG140301020R","price":77.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553415741780.jpg?v=1783006430"},{"product_id":"argo-battery-isolating-diode-splitter-180a-3-outputs","title":"Victron Argo Diode Battery Isolator 180A (3 Outputs)","description":null,"brand":"Victron","offers":[{"title":"Default Title","offer_id":56272721477972,"sku":"ARG180301020","price":89.04,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/victron-15553416200532.jpg?v=1783006444"},{"product_id":"mastervolt-bi-702-s-battery-isolator-2-batteries-70a-output","title":"Mastervolt Bi 702-S Battery Isolator (2 Batteries \/ 70A Output)","description":"\u003cp\u003eThe Mastervolt BI 702-S is a conventional diode battery isolator that splits the charge current from a single alternator or battery charger between two battery banks, keeping them isolated so the engine start battery cannot be drained by the domestic loads. It is fully solid state, with no moving parts to wear.\u003c\/p\u003e\n\u003cp\u003eAs a diode splitter, the BI 702-S has a voltage drop of approximately 0.6 V. This can be compensated by raising the output voltage of the connected charger or alternator; Mastervolt Mass battery chargers and Alpha Pro charge regulators include automatic voltage drop compensation as standard. The 702-S handles a maximum alternator output of 70 A.\u003c\/p\u003e\n\u003cp\u003eConstruction is corrosion-proof, with aluminium heat sinks and moulded diode splitters encased in synthetic material. The synthetic end plates carry the connection lugs, and solid bolt connections with nuts and locking rings make installation quick and secure.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":56282449183060,"sku":"83007021","price":79.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/M83007021.jpg?v=1782766750"},{"product_id":"mastervolt-bi-1202-s-battery-isolator-2-batteries-120a-output","title":"Mastervolt Bi 1202-S Battery Isolator (2 Batteries \/ 120A Output)","description":"\u003cp\u003eThe Mastervolt BI 1202-S is a conventional diode battery isolator that splits the charge current from a single alternator or battery charger between two battery banks, keeping them isolated so the engine start battery cannot be drained by the domestic loads. It is fully solid state, with no moving parts to wear.\u003c\/p\u003e\n\u003cp\u003eAs a diode splitter, the BI 1202-S has a voltage drop of approximately 0.6 V. This can be compensated by raising the output voltage of the connected charger or alternator; Mastervolt Mass battery chargers and Alpha Pro charge regulators include automatic voltage drop compensation as standard. The 1202-S handles a maximum alternator output of 120 A.\u003c\/p\u003e\n\u003cp\u003eConstruction is corrosion-proof, with aluminium heat sinks and moulded diode splitters encased in synthetic material. The synthetic end plates carry the connection lugs, and solid bolt connections with nuts and locking rings make installation quick and secure.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":56282449281364,"sku":"83012021","price":138.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/M83012021.jpg?v=1782766732"},{"product_id":"mastervolt-bi-1203-s-battery-isolator-3-batteries-120a-output","title":"Mastervolt Bi 1203-S Battery Isolator (3 Batteries \/ 120A Output)","description":"\u003cp\u003eThe Mastervolt BI 1203-S is a conventional diode battery isolator that splits the charge current from a single alternator or battery charger between three battery banks, keeping them isolated so the engine start battery cannot be drained by the domestic loads. It is fully solid state, with no moving parts to wear.\u003c\/p\u003e\n\u003cp\u003eAs a diode splitter, the BI 1203-S has a voltage drop of approximately 0.6 V. This can be compensated by raising the output voltage of the connected charger or alternator; Mastervolt Mass battery chargers and Alpha Pro charge regulators include automatic voltage drop compensation as standard. The 1203-S handles a maximum alternator output of 120 A.\u003c\/p\u003e\n\u003cp\u003eConstruction is corrosion-proof, with aluminium heat sinks and moulded diode splitters encased in synthetic material. The synthetic end plates carry the connection lugs, and solid bolt connections with nuts and locking rings make installation quick and secure.\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":56282449412436,"sku":"83012031","price":187.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9702\/3060\/files\/M83012031.jpg?v=1782766733"}],"url":"https:\/\/hudsonmarine.co.uk\/collections\/split-charge-diodes.oembed","provider":"Hudson Marine Electronics","version":"1.0","type":"link"}