{"product_id":"victron-bcd-802-diode-battery-combiner-2-bank-80a","title":"Victron BCD 802 2 batteries 80A (combiner diode) - BCD000802000","description":"\u003ch1 style=\"color: #f87c24;\"\u003eVictron BCD 802 Diode Battery Combiner – 2 Batteries, 80A\u003c\/h1\u003e\n\n\u003cp\u003eThe Victron BCD 802 is a diode-based battery combiner designed to charge two separate battery banks simultaneously from a single charging source, without allowing the banks to discharge into one another. It is suited to marine, vehicle and off-grid installations where battery isolation between a starter battery and a service bank is required.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCombines two battery banks from a single charging source using Schottky diodes, preventing reverse current flow between banks.\u003c\/li\u003e\n  \u003cli\u003eRated at 80A continuous current, covering the majority of alternator and charger outputs used in 12V and 24V systems.\u003c\/li\u003e\n  \u003cli\u003eSupports two output battery connections, keeping starter and leisure or service batteries electrically isolated during discharge.\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.49 kg, suitable for installation in confined spaces such as engine bays and vehicle battery compartments.\u003c\/li\u003e\n  \u003cli\u003eNo moving parts and no control electronics, giving a passive, maintenance-free installation.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard alternator and battery charger inputs across 12V and 24V systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eDiode battery combiners work by allowing current to flow from the charging source to both battery banks simultaneously, while the diodes block any current flowing back from one bank to the other. This means a flat service battery cannot drain the starter battery, and vice versa. The BCD 802 uses Schottky diodes, which have a lower forward voltage drop than standard silicon diodes, reducing heat generation and improving charging efficiency.\u003c\/p\u003e\n\n\u003cp\u003eThe 80A rating makes this unit appropriate for most single-alternator installations in boats, motorhomes, campervans and light commercial vehicles. It is a passive device with no relays, no control board and no software dependency. Once wired correctly, it operates without any user intervention. The voltage drop across the diodes (typically 0.3V to 0.6V for Schottky types) should be accounted for when setting the charging voltage on the source, particularly in temperature-sensitive battery chemistries such as lithium.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSKU: BCD000802000\u003c\/li\u003e\n  \u003cli\u003eModel: BCD 802\u003c\/li\u003e\n  \u003cli\u003eNumber of battery outputs: 2\u003c\/li\u003e\n  \u003cli\u003eMaximum continuous current: 80A\u003c\/li\u003e\n  \u003cli\u003eWeight: 0.49 kg\u003c\/li\u003e\n  \u003cli\u003eGTIN: 8719076020974\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine installations requiring isolation between engine start and domestic battery banks.\u003c\/li\u003e\n  \u003cli\u003eMotorhomes and campervans with a split-charge requirement between vehicle starter and leisure batteries.\u003c\/li\u003e\n  \u003cli\u003eLight commercial vehicles with auxiliary battery banks for refrigeration or equipment power.\u003c\/li\u003e\n  \u003cli\u003eOff-grid cabins or vehicles where a single solar charge controller or alternator feeds two separate battery banks.\u003c\/li\u003e\n  \u003cli\u003eBackup power systems requiring two independently dischargeable battery banks from one charger.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Victron BCD 802 diode battery combiner\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eThe BCD 802 should be mounted in a well-ventilated location, as diodes generate heat under load. Ensure the mounting surface can dissipate heat adequately, particularly at sustained high currents. All wiring should be appropriately rated for the maximum current and protected with correctly sized fuses on each output. The inherent voltage drop across the diodes means the charging source voltage may need to be increased slightly to compensate, particularly for AGM or lithium battery chemistries with tight charge voltage tolerances. Installation should be carried out by a qualified auto-electrician or marine electrician familiar with multi-battery systems.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":59855241380174,"sku":"BCD000802000","price":33.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/3698\/8238\/files\/VoltaconSolar_-_BCD000802000_-_BCD_802_2_batteries_80A_combiner_diode.webp?v=1781091723","url":"https:\/\/voltaconsolar.com\/products\/victron-bcd-802-diode-battery-combiner-2-bank-80a","provider":"VoltaconSolar","version":"1.0","type":"link"}