{"product_id":"12v-to-28v-caravan-charging-booster","title":"12V to 28V 50A Step-Up Converter | Caravan Charging Booster","description":"\u003cp\u003e\u003cstrong\u003eGet more from your existing caravan charging cable.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStruggling to charge your caravan batteries while driving? Long cable runs and excessive voltage drop can leave your DC-DC charger without the supply it needs to charge effectively.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eFalcon 12V to 28V Step-Up Converter\u003c\/strong\u003e raises the supply voltage before it travels from your tow vehicle to your caravan. Your compatible DC-DC charger then converts that supply into the correct charging voltage for your battery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigher voltage means less current through the long cable run.\u003c\/strong\u003e For the same power, a 28V supply carries approximately half the current of a 14V supply, reducing voltage drop and heat lost in the wiring. Actual results depend on the installation and conversion losses.\u003c\/p\u003e\n\u003cp\u003eIn suitable installations, this can allow you to \u003cstrong\u003eretain existing 8 AWG charging cable rather than replace the entire cable run\u003c\/strong\u003e, saving on materials and labour. Cable length, condition, connections and current capacity must still be checked—not every existing installation will be suitable.\u003c\/p\u003e\n\u003cp\u003eDesigned for use with compatible 12V DC-DC battery chargers up to 40A output. This converter supplies your charger; it does not replace it.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal input voltage\u003c\/th\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutput voltage\u003c\/th\u003e\n\u003ctd\u003e28V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConverter output rating\u003c\/th\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum DC-DC charger size for this application\u003c\/th\u003e\n\u003ctd\u003e40A output into a 12V battery system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRequired charger compatibility\u003c\/th\u003e\n\u003ctd\u003eVehicle-input operating range must accommodate 28V, including converter output tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBuilt-in on\/off switch\u003c\/th\u003e\n\u003ctd\u003eNone—external supply isolation required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe converter’s 50A output rating is not the battery charging current. The maximum charger size for this application is 40A.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline;\"\u003eCompatibility and Installation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the exact charger model.\u003c\/strong\u003e A “24V compatible” label or a high solar-input rating alone is not sufficient. The charger’s\u003cstrong\u003e \u003c\/strong\u003evehicle input must accept the converter’s output. REDARC BCDC1225D and BCDC1240D models specify a 9–32V input range, but complete system compatibility still needs checking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall at the vehicle end, after suitable supply isolation and before the long cable run.\u003c\/strong\u003e For the proposed VSR installation, this means the \u003cstrong\u003eload side of the voltage-sensitive relay\u003c\/strong\u003e. The 12V input wiring, relay and protection must handle the higher input current; only the boosted cable run benefits from the lower current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart-alternator vehicles require additional checks.\u003c\/strong\u003e A conventional VSR may disconnect when alternator voltage falls. This converter cannot maintain charging after its supply has been disconnected; the vehicle may require a different, suitably controlled isolation arrangement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003c\/em\u003e The boosted feed must be dedicated to compatible equipment. \u003cem\u003eDo not connect the 28V output directly to a 12V battery, fridge or other 12V-only accessories\u003c\/em\u003e\u003cstrong\u003e.\u003c\/strong\u003e Existing shared Anderson-plug circuits must be checked before conversion.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eInstallation and cable suitability should be assessed by a qualified auto electrician.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Falcon Overland","offers":[{"title":"Default Title","offer_id":67647736807738,"sku":null,"price":499.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4361\/1962\/files\/20261008_144302.jpg?v=1791425612","url":"https:\/\/falconoverland.co.nz\/products\/12v-to-28v-caravan-charging-booster","provider":"Falcon Overland","version":"1.0","type":"link"}