{"product_id":"90a-12v-12v-advanced-dc-dc-battery-charger","title":"90A 12V→12V Advanced DC-DC Battery Charger","description":"\u003csection class=\"energian-product\"\u003e \u003ch2 style=\"text-align: center;\"\u003e90A 12V→12V Advanced DC-DC Battery-to-Battery Charger\u003c\/h2\u003e \u003cp\u003eThe \u003cstrong\u003eDC1212-90\u003c\/strong\u003e is a high-power, fully automatic \u003cstrong\u003e90A DC-DC charger\u003c\/strong\u003e designed for leisure vehicles, boats, and commercial or specialist applications that require fast, safe charging of large 12V battery banks. Using advanced \u003cstrong\u003ebuck-boost power conversion\u003c\/strong\u003e and high-frequency switching technology, this unit delivers consistent output even with fluctuating alternator or supply voltage — ensuring your auxiliary batteries are always charged to optimum levels.\u003c\/p\u003e \u003cp\u003eSuitable for \u003cstrong\u003eLead Acid, AGM, Gel, LiFePO\u003csub\u003e4\u003c\/sub\u003e, and Lithium-ion (NCM)\u003c\/strong\u003e batteries, the charger features a smart three-stage charging program for efficient and reliable battery maintenance. With comprehensive protections, temperature-aware charging, and optional data monitoring, it’s ideal for motorhomes, campervans, work vehicles, and marine systems with multiple battery sources.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eHigh-output charging:\u003c\/strong\u003e provides up to 90A of regulated charging power for rapid replenishment of large 12V battery banks.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIntelligent three-stage charging:\u003c\/strong\u003e fully automatic bulk, absorption, and float modes tailored to each battery chemistry.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSelectable battery profiles:\u003c\/strong\u003e DIP-switch selection for Lead Acid, AGM, Gel, LiFePO\u003csub\u003e4\u003c\/sub\u003e, or Lithium-ion (NCM) batteries.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSafe unattended operation:\u003c\/strong\u003e protection against overload, overheating, over- and under-voltage, short circuit, and reverse discharge.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eTemperature management:\u003c\/strong\u003e supports optional external sensor for voltage compensation on lead-acid batteries and cold-charge protection on lithium types.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eData monitoring:\u003c\/strong\u003e optional Bluetooth module or remote LCD meter (sold separately) for live status, charging data, and diagnostics.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIgnition-controlled start\/stop:\u003c\/strong\u003e begins charging automatically when vehicle ignition is on and stops when turned off, or can operate via voltage-sensing control.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eContinued charging under load:\u003c\/strong\u003e maintains stable output even while 12V appliances are in use, preventing voltage dips or surges.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eWake-up function for lithium BMS:\u003c\/strong\u003e automatically re-activates lithium batteries that have entered protection mode.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRelay control output:\u003c\/strong\u003e provides a signal to link battery banks under heavy load so the source battery can assist with starting or powering large equipment.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003ePrecision sense terminals:\u003c\/strong\u003e optional sense lines bypass voltage drop in long or heavy-gauge cables for more accurate charging control.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eLED indicators:\u003c\/strong\u003e four status LEDs display charge stage and diagnostic information for clear, at-a-glance monitoring.\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\u003e90A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum charging power\u003c\/td\u003e \u003ctd\u003e≈1170W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRecommended source battery capacity\u003c\/td\u003e \u003ctd\u003e≥ 60–100Ah\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\u003e120 – 800Ah\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBulk charge 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 charge 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 current\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\u003e\u003cspan\u003e276 x 190 x 72mm\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWeight\u003c\/td\u003e \u003ctd\u003e2 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\u003eDesigned for 12V electrical systems only. Works with all major 12V battery chemistries. Not compatible with 24V systems or mixed-voltage setups. For best results, mount in a ventilated area and connect using properly sized cables and fuses. Optional accessories — including Bluetooth module, temperature sensor and remote LCD meter — provide full monitoring and environmental protection in demanding 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\/DC1212_DC1224_DC2412_user_manual_without_solar.pdf?v=1760174511\"\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":67609785663642,"sku":"DC1212-90","price":161.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/9568\/9626\/files\/DC1212-90.png?v=1790723720","url":"https:\/\/coretarps.co.uk\/products\/90a-12v-12v-advanced-dc-dc-battery-charger","provider":"ELMBER TRADE LTD","version":"1.0","type":"link"}