{"product_id":"sterling-power-bb4812-dc-to-dc-charger-and-converter-48v-to-12v-40a","title":"Sterling Power BB4812 DC to DC Charger and Converter, 48V to 12V 40A","description":"\u003cp\u003eThe Sterling Power BB4812 is a two-in-one 48V to 12V unit for RVs, vans, boats and off-grid builds that run a 48V lithium or lead acid house bank but still need 12V power. It can feed 12V loads directly or charge a separate 12V battery.\u003c\/p\u003e\u003cp\u003eAs a converter it turns a 39-60V DC supply into a steady 12V output, so fridges, pumps, LED lighting, USB-C chargers or a small inverter can run without a 12V battery in the system (you can still add one). As a charger it behaves like a multistage battery charger with adjustable charge voltages and a 40A current limit. Out of the box the output sits at 13.8V and delivers up to 40A, about 550W.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWorks as a stand-alone 48V to 12V converter or as a 12V battery charger\u003c\/li\u003e\n\u003cli\u003e12V battery optional; the unit is current limiting\u003c\/li\u003e\n\u003cli\u003eAdjustable charge voltages, multistage charging\u003c\/li\u003e\n\u003cli\u003eHigh internal capacitance for a very stable 12V supply\u003c\/li\u003e\n\u003cli\u003eSelf-recovering protections: input under-voltage, input over-voltage, output over-voltage, over-current and charge over-temperature\u003c\/li\u003e\n\u003cli\u003eThermostatically controlled, variable low-speed fan\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput voltage:\u003c\/strong\u003e 39-60V DC (48V lithium or lead acid bank)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 40A at 13.8V default, about 550W continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDefault output voltage:\u003c\/strong\u003e 13.8V (adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e 98%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiescent current:\u003c\/strong\u003e 1 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20 to 60 °C (-4 to 140 °F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e Thermostatically controlled variable-speed fan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, UKCA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 165 x 130 x 56 mm (6.5 x 5.1 x 2.2 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.0 kg (2.20 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGenuine Sterling Power with Sterling Power's warranty. Ships from our warehouse in Upland, California. Not sure it fits your setup? Ask us before you order.\u003c\/p\u003e","brand":"Sterling Power","offers":[{"title":"Default Title","offer_id":68285003301165,"sku":"RVP-26301","price":398.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5625\/2717\/files\/BB4812.webp?v=1794524716","url":"https:\/\/www.rvpartsgiant.com\/products\/sterling-power-bb4812-dc-to-dc-charger-and-converter-48v-to-12v-40a","provider":"RV Parts Giant","version":"1.0","type":"link"}