{"product_id":"ctek-smartpass-120s-battery-management-system-w-installation-kit-12v-dc-power-distribution-40-678","title":"CTEK SmartPass 120S Battery Management System w\/ Installation Kit - 12V DC Power Distribution | 40-678","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCTEK SMARTPASS 120S\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a high-capacity 12V power management solution designed for dual-battery systems in vans, motorhomes, 4x4s, boats, and other vehicles requiring reliable auxiliary battery charging and power distribution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S manages up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e120 amps continuously\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, directing available alternator power to the service battery and connected electrical equipment. Its intelligent Battery Guard system prioritizes critical electrical loads while protecting the auxiliary battery from excessive discharge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S can also be integrated with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCTEK D250SE 20A onboard charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to create a combined \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e140A power management and charging system\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003e120A continuous power management\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHandles 12V batteries from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e28–800Ah\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with lead-acid and LiFePO₄ batteries\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with smart alternators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProvides rapid auxiliary battery charging while driving\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBattery Guard\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e protects the service battery from total discharge\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrioritizes critical electrical equipment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupplies selected consumers directly from the alternator\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDynamic over-current protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHandles temporary inputs and outputs up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e350A for 10 seconds\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt-in battery temperature protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStart-assistance function\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAutomatic battery separation eliminates the need for traditional diodes or VSR relays\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFully automatic operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCan be integrated with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eD250SE\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIP65 splash- and dust-resistant construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for dual-battery vehicle systems\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCTEK\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSMARTPASS 120S\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40-678\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePrevious Article Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40-289\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCharging Category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDC Charging\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e11.5–23V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eContinuous Input Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Temporary Input\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e350A for 10 seconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eContinuous Output\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Temporary Output\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e350A for 10 seconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBattery Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e28–800Ah\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBattery Chemistry\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLead Acid \/ Lithium-Ion\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCompatible Battery Types\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWET, MF, Ca\/Ca, AGM, EFB, GEL, LiFePO₄\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Source\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12V → 12V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProtection Rating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP65\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-4°F to +122°F (-20°C to +50°C)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBack Current Drain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLess than 7Ah\/month\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.6 × 4.3 × 2.6 in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNet Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.09 lbs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Years\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cbr class=\"ProseMirror-trailingBreak\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBattery Guard\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S uses an integrated \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBattery Guard\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e system to help prevent the service battery from being completely discharged.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen auxiliary-battery voltage becomes low, the system can disconnect non-critical electrical loads while maintaining power to priority equipment. This is particularly useful for vehicles carrying important electrical equipment such as radios, emergency lighting, navigation systems, refrigeration, and other auxiliary loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e120A Alternator Power Management\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S allows available alternator power to be intelligently distributed between the auxiliary battery and connected electrical consumers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt provides up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e120A of continuous power\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with dynamic over-current protection capable of handling temporary loads up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e350A for 10 seconds\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eD250SE Integration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S is designed to work with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCTEK D250SE 20A DC-DC charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen combined, the system can provide up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e140A of power management\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, making it an excellent solution for larger auxiliary electrical systems in motorhomes, vans, 4x4s, and overlanding vehicles.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBattery Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SMARTPASS 120S supports a wide range of 12V battery technologies, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eWET\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaintenance-free (MF)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCa\/Ca\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAGM\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEFB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGEL\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLiFePO₄\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt supports both \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elead-acid and lithium-ion battery chemistries\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with service batteries ranging from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e28–800Ah\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTemperature Protection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eBuilt-in battery temperature protection reduces charging current when battery temperature becomes excessive. This helps protect the service battery and charging system during demanding operating conditions.\u003c\/span\u003e\u003c\/p\u003e","brand":"CTEK","offers":[{"title":"Default Title","offer_id":43115902304352,"sku":"ctek40-678","price":569.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/files\/smartpass120s-product-image-big.webp?v=1788376493","url":"https:\/\/www.importimageracing.com\/products\/ctek-smartpass-120s-battery-management-system-w-installation-kit-12v-dc-power-distribution-40-678","provider":"Import Image Racing","version":"1.0","type":"link"}