{"product_id":"renogy-12v-40a-dc-to-dc-battery-charger-mppt","title":"Renogy 12V 40A DC to DC Battery Charger w\/ MPPT","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #001b30; line-height: 1.65; max-width: 1180px; margin: 0 auto;\"\u003e\n\u003csection style=\"background: linear-gradient(135deg,#001B30 0%,#00254B 100%); border-radius: 24px; padding: 34px; margin-bottom: 20px; color: #f5f5f5;\"\u003e\n\u003ch2 style=\"font-size: 34px; line-height: 1.15; margin: 0 0 16px; color: #f5f5f5;\"\u003eRenogy 12V 40A DC to DC Battery Charger with MPPT\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; color: #f5f5f5; max-width: 900px; margin: 0;\"\u003eKeep a compatible house battery charged while driving or parked with a charger designed to switch between DC input and solar input. Use the SELECT button to set solar-priority charging for appropriate system conditions.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC battery charger with MPPT charging overview\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-1.jpg?v=1752055658\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"background: #F5F5F5; border: 1px solid #D9D9D9; border-radius: 22px; padding: 26px; margin-bottom: 40px; box-shadow: 0 6px 18px rgba(0,27,48,.06);\"\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eSwitch between solar and DC charging inputs efficiently while maintaining dependable charging support for a compatible mobile power system.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger supporting mobile off-grid charging\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-2.jpg?v=1752055656\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eSeamlessly Switch Charging Modes\u003c\/h3\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eWhen input voltage in the primary charging mode drops below the default threshold, the charger automatically switches to the alternate source to maintain efficient charging.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eDC Priority\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger DC priority mode\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-3-1.jpg?v=1752055687\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eSolar Priority\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger solar priority mode\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-3-2.jpg?v=1752055687\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eUnderstand the Charging Logic Behind Each Model\u003c\/h3\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eRenogy presents the 40A model as switching between solar and DC inputs according to availability, while the compared 30A and 50A models support simultaneous dual input.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy MPPT DC-DC charger model charging logic comparison\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/rbc40-rbc30-rbc50-pc-1.jpg?v=1752055694\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eGet to Know the Key Points\u003c\/h3\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eThe source comparison identifies the 40A model as a compact MPPT\/DC-input charger with SELECT-button mode switching for compatible mobile power systems.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A charger key feature comparison\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/rbc40-rbc30-rbc50-pc-2.jpg?v=1752055697\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eStay Charged on the Move\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger RV application\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-6-1.jpg?v=1752055675\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eStay Charged on the Drive\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger SUV application\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-6-2.jpg?v=1752055675\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eStay Charged on the Water\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger boat application\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-6-3.jpg?v=1752055675\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eMultiple Safety Certifications\u003c\/h3\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eThe live Description presents certification testing as part of Renogy’s focus on dependable off-grid power performance.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A charger certification and safety documentation\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/RBC40D1S-PC-7.jpg?v=1752055679\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch3 style=\"font-size: 26px; color: #001b30; margin: 0 0 10px;\"\u003eWiring Diagram\u003c\/h3\u003e\n\u003cp style=\"color: #284055; margin: 0;\"\u003eThe verified in-description wiring diagram illustrates a compatible connection layout for the starter battery, house battery, alternator and solar input.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 18px; margin-top: 16px; display: block;\" loading=\"lazy\" alt=\"Renogy 40A DC-DC charger wiring diagram\" src=\"https:\/\/www.renogy.com\/cdn\/shop\/files\/E8_BF_9E_E7_BA_BF_E5_9B_BE-_E5_AE_98_E7_BD_91PC_E7_AB_AF.jpg?v=1752055690\u0026amp;width=1200\"\u003e\u003c\/section\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Renogy","offers":[{"title":"Default Title","offer_id":52462549893401,"sku":"RBC40D1S-G1-US","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/7318\/4281\/files\/01_9fe8f135-b670-4465-943d-5c0d2bfb8351.jpg?v=1780523955","url":"https:\/\/gridgetaway.com\/products\/renogy-12v-40a-dc-to-dc-battery-charger-mppt","provider":"Grid Getaway","version":"1.0","type":"link"}