{"product_id":"40a-12v-12v-compact-dc-dc-battery-to-battery-charger-with-solar-input","title":"40A 12V→12V Compact DC-DC Battery-to-Battery Charger with Solar Input","description":"\u003csection class=\"energian-product\"\u003e \u003ch2\u003e40A 12V→12V DC-DC Battery-to-Battery Charger with Integrated MPPT Solar Input\u003c\/h2\u003e \u003cp\u003eThis high-performance \u003cstrong\u003e40A DC-DC charger\u003c\/strong\u003e allows a 12V leisure or auxiliary battery to be charged from a 12V starter battery or alternator, and also features a built-in MPPT solar input for charging from solar panels when parked. Combining two charging systems in one compact, efficient unit simplifies installation and extends your off-grid runtime — ideal for \u003cstrong\u003ecampervans, motorhomes, caravans and boats\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eThe intelligent multi-stage charging program ensures each connected battery type receives the correct voltage and current profile for optimum life and performance. With one-button programming, advanced protections, and continued charging even under load, the DCDC-40A delivers professional-grade functionality in a user-friendly format.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eDual-input operation:\u003c\/strong\u003e charges from alternator or solar panel (up to 40A) with automatic input switching.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIntegrated MPPT solar controller:\u003c\/strong\u003e maximises solar efficiency and activates automatically when battery-to-battery charging is not required.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eMulti-stage smart charging:\u003c\/strong\u003e precise charging for Lead Acid, AGM, Gel, Calcium and Lithium-ion batteries for longer lifespan and performance stability.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eOne-button battery type selection:\u003c\/strong\u003e quick configuration with memory retention even after power loss.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSafe unattended operation:\u003c\/strong\u003e built-in protection against overload, overheating, over-voltage, reverse discharge and short circuit.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSupports charging under load:\u003c\/strong\u003e powers 12V appliances while maintaining battery charge stability.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIgnition or voltage-sensing control:\u003c\/strong\u003e automatically starts and stops charging with engine operation or based on battery voltage levels.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eDeep discharge recovery:\u003c\/strong\u003e capable of restoring batteries with output voltage as low as 2.0V.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eLED indicators:\u003c\/strong\u003e show charge stage, power source and selected battery type for clear visual feedback.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eBattery input voltage\u003c\/td\u003e \u003ctd\u003e12.5 – 16.0 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum charging current\u003c\/td\u003e \u003ctd\u003e40 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSolar input voltage\u003c\/td\u003e \u003ctd\u003e16 – 25 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum solar input current\u003c\/td\u003e \u003ctd\u003e40 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMinimum target battery voltage\u003c\/td\u003e \u003ctd\u003e2.0 V (recovery)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBulk charge voltage\u003c\/td\u003e \u003ctd\u003e14.7 V (AGM\/Gel), 14.4 V (Lead Acid), 15.4 V (Calcium), 14.4 V (Li-ion)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFloat charge voltage\u003c\/td\u003e \u003ctd\u003e13.5 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRecommended battery capacity\u003c\/td\u003e \u003ctd\u003e60 – 600 Ah\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e \u003ctd\u003e307 × 198 × 45 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWeight\u003c\/td\u003e \u003ctd\u003e1.2 kg\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWarranty\u003c\/td\u003e \u003ctd\u003e1 year\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eCompatibility \u0026amp; Installation\u003c\/h3\u003e \u003cp\u003eSuitable for any 12V battery system, including Lead Acid, AGM, Gel, Calcium and Lithium-ion types. Not compatible with 24V systems or mixed-voltage setups. Use correctly rated cabling and fuses, and ensure the charger is mounted in a ventilated location. Ignition and voltage-sensing control options make it adaptable for a wide range of vehicle and marine installations.\u003c\/p\u003e \u003ch3\u003eDocuments Available\u003c\/h3\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0579\/7927\/3414\/files\/DCDC-20_40A_user_manual.pdf?v=1760173241\"\u003eInstallation and user guide\u003c\/a\u003e available for download\u003c\/p\u003e \u003c\/section\u003e","brand":"Photonic Universe","offers":[{"title":"Default Title","offer_id":54909207839059,"sku":"DCDC-40A","price":70.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/DCDC-40A1.png?v=1789038809","url":"https:\/\/progradewarehouse.com\/products\/40a-12v-12v-compact-dc-dc-battery-to-battery-charger-with-solar-input","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}