{"product_id":"srne-md1250-dual-dc-to-dc-mppt-controller","title":"SRNE MD1250 Dual DC to DC \u0026 MPPT Controller","description":"\u003cp\u003eThe \u003cstrong data-end=\"257\" data-start=\"239\"\u003eSRNE MD1250N05\u003c\/strong\u003e is a high-efficiency, multi-stage \u003cstrong data-end=\"342\" data-start=\"292\"\u003eDC-DC charger and MPPT solar charge controller\u003c\/strong\u003e designed for dual-battery systems in vehicles, boats, and off-grid applications. It intelligently manages power from both solar panels and a vehicle alternator or generator, ensuring that the auxiliary battery is charged safely, efficiently, and reliably under all conditions.\u003c\/p\u003e \u003ch4 data-end=\"649\" data-start=\"628\"\u003e\u003cstrong data-end=\"649\" data-start=\"633\"\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e \u003cp data-end=\"803\" data-start=\"652\"\u003e\u003cstrong data-end=\"676\" data-start=\"652\"\u003eDual Input Charging:\u003c\/strong\u003e Accepts power from both alternator and solar sources, charging the auxiliary battery independently from the starter battery.\u003c\/p\u003e \u003cp data-end=\"990\" data-start=\"806\"\u003e\u003cstrong data-end=\"832\" data-start=\"806\"\u003eMPPT Solar Technology:\u003c\/strong\u003e Utilises advanced Maximum Power Point Tracking to extract the maximum possible power from solar panels, improving overall charging efficiency by up to 98%.\u003c\/p\u003e \u003cp data-end=\"1123\" data-start=\"993\"\u003e\u003cstrong data-end=\"1021\" data-start=\"993\"\u003eMultiple Charging Modes:\u003c\/strong\u003e Supports solar charging only, alternator charging only, or simultaneous charging from both sources.\u003c\/p\u003e \u003cp data-end=\"1245\" data-start=\"1126\"\u003e\u003cstrong data-end=\"1158\" data-start=\"1126\"\u003eAutomatic Battery Detection:\u003c\/strong\u003e Compatible with standard and smart alternators, making it ideal for modern vehicles.\u003c\/p\u003e \u003cp data-end=\"1388\" data-start=\"1248\"\u003e\u003cstrong data-end=\"1276\" data-start=\"1248\"\u003eMulti-Chemistry Support:\u003c\/strong\u003e Works with Sealed, Gel, Flooded, and Lithium (LiFePO₄) batteries, with user-customisable charging parameters.\u003c\/p\u003e \u003cp data-end=\"1540\" data-start=\"1391\"\u003e\u003cstrong data-end=\"1420\" data-start=\"1391\"\u003eComprehensive Protection:\u003c\/strong\u003e Built-in safeguards against overvoltage, overcurrent, overheating, reverse polarity, and night-time reverse charging.\u003c\/p\u003e \u003cp data-end=\"1692\" data-start=\"1543\"\u003e\u003cstrong data-end=\"1574\" data-start=\"1543\"\u003eCompact \u0026amp; Efficient Design:\u003c\/strong\u003e Fanless cooling, ultra-low standby power consumption (\u0026lt;0.6 W), and durable IP32 enclosure for reliable performance.\u003c\/p\u003e \u003cp data-end=\"1692\" data-start=\"1543\"\u003e \u003c\/p\u003e \u003ctable style=\"width: 84.514874%; border-collapse: collapse;\" class=\"spec-table\"\u003e \u003cthead style=\"background-color: #f2f2f2;\"\u003e \u003ctr\u003e \u003cth style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eSpecification\u003c\/th\u003e \u003cth style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003eMD1230N05\u003c\/th\u003e \u003cth style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003eMD1250N05\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003ePV INPUT\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. Voltage of Open Circuit\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e55V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMPPT Voltage Range\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e17–36V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. PV Input Current\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003e30A\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003e50A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. PV Input Power\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003e400W\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003e700W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003eHOUSE BATTERY\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eBattery Type\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eLead-acid \/ Li-ion \/ User Defined\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eRated Battery Voltage\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e12V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eBattery Voltage Range\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e9–16V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. MPPT Charging Current\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003e30A\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003e50A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003eSTARTER BATTERY\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eBattery Type\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eLead-acid\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eRated Battery Voltage\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e12\/24V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. Alternator Input Voltage\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eConventional Alternator: 13.2–16V DC \/ 26.4–32V DC\u003cbr\u003eEuro 6 Standard Alternator: 12–16V DC \/ 24–32V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eAlternator Charging Mode\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eBuck, Boost\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003eEFFICIENCY\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMPPT Tracking Efficiency\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e\u0026gt;99%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eMax. Charging Conversion Efficiency\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e96%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003eGENERAL\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eWeight\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003e1.92kg\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003e2.34kg\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eDimension (L×W×H)\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 18.731266%;\"\u003e221×175.8×73mm\u003c\/td\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 26.268734%;\"\u003e221×175.8×92.4mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eProtection Degree\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eIP32\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eOperating Temperature Range\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003e-35°C to +65°C (-31°F to +149°F)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eCommunication\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eTTL, Bluetooth, RS485, CAN\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #dddddd; background: #f9f9f9; width: 73%;\"\u003e\u003cstrong\u003eCERTIFICATION\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding: 10px; border: 1px solid #dddddd; width: 28%;\"\u003eCompliance\u003c\/td\u003e \u003ctd colspan=\"2\" style=\"padding: 10px; border: 1px solid #dddddd; width: 45%;\"\u003eIEC62109 \/ IEC61000 \/ FCC sDoC \/ RoHS\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cdiv class=\"_tableContainer_1rjym_1\"\u003e \u003c\/div\u003e \u003ch4 data-end=\"2389\" data-start=\"2368\"\u003e \u003cstrong data-end=\"2389\" data-start=\"2373\"\u003eApplications\u003c\/strong\u003e \u003c\/h4\u003e \u003cp data-end=\"2425\" data-start=\"2392\"\u003eCampervans, motorhomes, and RVs\u003c\/p\u003e \u003cp data-end=\"2459\" data-start=\"2428\"\u003eMarine and boat installations\u003c\/p\u003e \u003cp data-end=\"2503\" data-start=\"2462\"\u003eOff-grid cabins and mobile power setups\u003c\/p\u003e \u003cp data-end=\"2536\" data-start=\"2506\"\u003eDual-battery vehicle systems\u003c\/p\u003e \u003ch4 data-end=\"2559\" data-start=\"2543\"\u003e\u003cstrong data-end=\"2559\" data-start=\"2548\"\u003eSummary\u003c\/strong\u003e\u003c\/h4\u003e \u003cp data-end=\"2867\" data-start=\"2560\"\u003eThe SRNE MD1250N05 combines intelligent charging control with powerful MPPT solar optimisation, ensuring efficient battery management wherever you go. Designed for reliability and simplicity, it’s the perfect solution for maintaining fully charged leisure or auxiliary batteries in any off-grid environment.\u003c\/p\u003e","brand":"SRNE","offers":[{"title":"Default Title","offer_id":54908161556819,"sku":"SR-MD1250N05","price":97.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/SRNE_MD1250.jpg?v=1789034427","url":"https:\/\/progradewarehouse.com\/products\/srne-md1250-dual-dc-to-dc-mppt-controller","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}