{"product_id":"e-fast-20a-smart-car-battery-charger-12v-24v-lifepo4-lead-acid-compatible-7-stage-fast-charge","title":"E-FAST 20A Smart Car Battery Charger 12V\/24V — LiFePO4 \u0026 Lead-Acid Compatible, 7-Stage Fast Charge","description":"\u003cp\u003e\u003cstrong\u003eThe E-FAST 20A Smart Car Battery Charger is a high-power, multi-chemistry charger and maintainer that charges 12V\/24V batteries fast, revives sulfated lead-acid cells, and safely maintains LiFePO4 and lead-acid batteries.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a single charger that handles everything from a camper's LiFePO4 bank to a truck's deep-cycle lead-acid battery, this unit provides fast 20A charging, a 7-stage smart algorithm, and a desulfation\/repair mode. It’s designed to bring large-capacity batteries back to life, protect against common faults, and run continuously as a maintainer for vehicles, boats, RVs, and off-grid gear.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will it charge my battery compared with a typical 10A charger?\u003c\/h3\u003e\n\u003cp\u003eThanks to its 20A output for 12V systems (10A for 24V), the E-FAST charger cuts charge time roughly in half versus standard 10A units. Expect to fully charge about a 100Ah battery in approximately 5–6 hours under normal conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20A output for 12V, 10A output for 24V batteries\u003c\/li\u003e\n  \u003cli\u003e100Ah battery reaches full charge in ~5–6 hours\u003c\/li\u003e\n  \u003cli\u003eSupports batteries up to 300Ah for heavy-duty applications\u003c\/li\u003e\n  \u003cli\u003eBuilt-in fan manages heat during sustained high-amp charging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this charger safely handle LiFePO4 and different lead-acid types?\u003c\/h3\u003e\n\u003cp\u003eYes — the charger uses dedicated charging algorithms tailored for LiFePO4 chemistry as well as all common 12V\/24V lead-acid types (AGM, GEL, SLA, wet, and deep-cycle). It detects and applies appropriate voltage and charge profiles to protect battery health.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSelectable modes for LiFePO4 and multiple lead-acid chemistries\u003c\/li\u003e\n  \u003cli\u003eMicroprocessor-controlled 7-stage charging for correct voltage stages\u003c\/li\u003e\n  \u003cli\u003eAuto-memory restores last selected mode after power loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the desulfation or Repair Mode do for an old battery?\u003c\/h3\u003e\n\u003cp\u003eThe Repair Mode applies pulse repair technology over an extended cycle (up to 16 hours) to help break down sulfate buildup on lead-acid plates. This process can restore capacity to idle or stratified batteries and extend usable life when recovery is practical.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePulse-based desulfation targets sulfate crystals on plates\u003c\/li\u003e\n  \u003cli\u003eDesigned for stuck, idle, or stratified lead-acid batteries\u003c\/li\u003e\n  \u003cli\u003e16-hour Repair Mode cycle to maximize recovery potential\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protections and safety features are included for 24\/7 use?\u003c\/h3\u003e\n\u003cp\u003eThe unit includes a suite of protections and an active cooling system so it can operate continuously as a maintainer without user supervision. Safety features reduce risk of damage to battery and charger during normal or fault conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReverse polarity, short-circuit, over-charge, and over-temp protection\u003c\/li\u003e\n  \u003cli\u003eActive cooling fan disperses heat during high-amp operation\u003c\/li\u003e\n  \u003cli\u003eAuto-memory ensures consistent behavior after interruptions\u003c\/li\u003e\n  \u003cli\u003eMicroprocessor control manages charging stages to avoid overcharging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The E-FAST 20A Smart Charger is aimed at owners of larger batteries and mixed fleets: RV and boat owners, pickup and truck drivers, agricultural equipment operators, and small off-grid systems who want faster recharge times, smart multi-chemistry support, and a tool to revive tired lead-acid batteries. Choose this charger if you need a robust, all-in-one solution to rapidly charge, safely maintain, and potentially recover batteries up to 300Ah in demanding vehicle and marine environments.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this charger work with both 12V and 24V batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It supports 12V at 20A and 24V at 10A, with appropriate charging profiles for each voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the Repair Mode restore a sulfated battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Repair Mode uses pulse desulfation to improve many sulfated lead-acid batteries, though results vary by battery condition.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"E-FAST","offers":[{"title":"Default Title","offer_id":48079938322590,"sku":"B0G1YH6QFQ","price":69.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/e-fast-front-panel.jpg?v=1785776306","url":"https:\/\/northtrailauto.ca\/products\/e-fast-20a-smart-car-battery-charger-12v-24v-lifepo4-lead-acid-compatible-7-stage-fast-charge","provider":"North Trail Auto","version":"1.0","type":"link"}