{"product_id":"30a-12v-12v-compact-dc-dc-battery-to-battery-charger-20a-solar-input","title":"30A 12V→12V Advanced DC-DC Battery Charger with 20A MPPT Solar Input","description":"\u003csection class=\"energian-product\"\u003e \u003ch2\u003e30A 12V→12V Advanced DC-DC Battery Charger with 20A MPPT Solar Input\u003c\/h2\u003e \u003cp\u003eThe \u003cstrong\u003eDC1212-3020\u003c\/strong\u003e is an advanced dual-input \u003cstrong\u003eDC-DC charger\u003c\/strong\u003e designed for vehicles, boats and off-grid systems requiring reliable charging from both alternator and solar sources. Delivering up to \u003cstrong\u003e30A\u003c\/strong\u003e from a 12V starter battery and a further \u003cstrong\u003e20A\u003c\/strong\u003e from its integrated MPPT solar controller, it provides efficient, intelligent charging for a wide range of battery types — including \u003cstrong\u003eLead Acid, AGM, Gel, LiFePO\u003csub\u003e4\u003c\/sub\u003e, and Lithium-ion (NCM)\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eCompact and lightweight, this high-frequency charger uses buck-boost conversion to maintain consistent output even when supply voltage fluctuates. Its intelligent three-stage charging program automatically adjusts to the selected battery chemistry for safe, unattended operation. Whether fitted in a campervan, motorhome, commercial vehicle or boat, the DC1212-3020 ensures fast, complete and controlled charging every time.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eDual charging capability:\u003c\/strong\u003e charges from alternator or solar, switching automatically between inputs for maximum efficiency.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIntegrated 20A MPPT solar controller:\u003c\/strong\u003e extracts maximum power from solar panels (up to 250W, 50V Voc), with trickle charge to maintain the starter battery.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIntelligent three-stage charging:\u003c\/strong\u003e optimised for Lead Acid, AGM, Gel, LiFePO\u003csub\u003e4\u003c\/sub\u003e and Lithium-ion (NCM) batteries, ensuring safe and complete charging.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eTemperature management:\u003c\/strong\u003e supports an optional external sensor for automatic voltage compensation (lead-acid) and low-temperature charge inhibit (lithium).\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eData monitoring:\u003c\/strong\u003e compatible with optional Bluetooth module or remote LCD meter for real-time charging data.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIgnition or voltage sensing control:\u003c\/strong\u003e automatic start\/stop charging with engine on\/off via D+ terminal or voltage detection.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eContinued charging under load:\u003c\/strong\u003e maintains charge while 12V appliances remain in use; full protection against voltage fluctuation.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eWake-up function for lithium BMS:\u003c\/strong\u003e automatically reactivates a battery that has entered protection mode.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRelay signal output:\u003c\/strong\u003e allows battery banks to be linked under heavy load so the source battery can assist the target battery.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003ePrecision sense terminals:\u003c\/strong\u003e optional terminals for accurate voltage sensing and compensation for cable drop.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eLED indicators:\u003c\/strong\u003e display solar charging status, charging stage, and diagnostic information at a glance.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eSource battery voltage\u003c\/td\u003e \u003ctd\u003e12V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eInput voltage range\u003c\/td\u003e \u003ctd\u003e10.5 – 16V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eEffective D+ signal range\u003c\/td\u003e \u003ctd\u003e8 – 16V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum charging current (target)\u003c\/td\u003e \u003ctd\u003e30A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum charging power\u003c\/td\u003e \u003ctd\u003e390W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum solar input power\u003c\/td\u003e \u003ctd\u003e250W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum solar input current\u003c\/td\u003e \u003ctd\u003e14A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSolar open-circuit voltage (Voc)\u003c\/td\u003e \u003ctd\u003e50V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCharging current from solar to target battery\u003c\/td\u003e \u003ctd\u003e20A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTrickle charge to source battery\u003c\/td\u003e \u003ctd\u003e0 – 5A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRecommended source battery capacity\u003c\/td\u003e \u003ctd\u003e≥ 60Ah\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTarget rated voltage\u003c\/td\u003e \u003ctd\u003e12V (Lead Acid, AGM, Gel), 12.8V (LiFePO\u003csub\u003e4\u003c\/sub\u003e), 11.1V (Li-ion)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTarget battery capacity\u003c\/td\u003e \u003ctd\u003e45 – 280Ah\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBulk voltage\u003c\/td\u003e \u003ctd\u003e14.7V (AGM), 14.3V (Gel), 14.4V (Lead Acid), 13.9–14.6V (LiFePO\u003csub\u003e4\u003c\/sub\u003e), 12.6V (Li-ion)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFloat voltage\u003c\/td\u003e \u003ctd\u003e13.5V (AGM), 13.8V (Gel), 13.5V (Lead Acid), 13.8V (LiFePO\u003csub\u003e4\u003c\/sub\u003e), 12.5V (Li-ion)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTemperature compensation\u003c\/td\u003e \u003ctd\u003e−3 mV \/ °C \/ 2 V (Lead-acid only)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOperating temperature\u003c\/td\u003e \u003ctd\u003e−20 °C to +50 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSelf-consumption\u003c\/td\u003e \u003ctd\u003e17 mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRelay signal output\u003c\/td\u003e \u003ctd\u003e12 V \/ 1 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e \u003ctd\u003e190 × 194 × 70 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWeight\u003c\/td\u003e \u003ctd\u003e1.44 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 12V electrical systems only. Works with all common 12V battery types and alternator systems. Not compatible with 24V systems or mixed 12V\/24V setups. Install using appropriately sized cables and fuses in a ventilated location. Optional accessories — including Bluetooth module, remote meter, and temperature sensor — allow flexible monitoring and control in vehicle, marine or off-grid environments.\u003c\/p\u003e \u003ch3\u003eDocuments Available\u003c\/h3\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0579\/7927\/3414\/files\/DC1212_DC1224_DC2412_user_manual_with_solar.pdf?v=1760173782\"\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":67609776849050,"sku":"DC1212-3020","price":127.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/9568\/9626\/files\/DC1212-3020DCtoDCchargerwithsolarinput1.png?v=1790723689","url":"https:\/\/coretarps.co.uk\/products\/30a-12v-12v-compact-dc-dc-battery-to-battery-charger-20a-solar-input","provider":"ELMBER TRADE LTD","version":"1.0","type":"link"}