{"product_id":"ezred-ms4000-automotive-memory-saver-with-built-in-12v-charger-obdii-backup-4-5ah-battery","title":"EZRED MS4000 Automotive Memory Saver with Built‑In 12V Charger — OBDII Backup, 4.5Ah Battery","description":"\u003cp\u003e\u003cstrong\u003eThe EZRED MS4000 is a compact automotive memory saver with a built‑in 12V charger that preserves vehicle settings while the main battery is disconnected.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe MS4000 combines a sealed 12‑volt, 4.5 Ah lead‑acid backup battery with a hardwired OBDII plug so you can change or replace a car battery without losing radios, clocks, anti‑theft codes, TPMS data or other electronic settings. LED indicators show when the unit is connected and when the internal battery needs replacement, while an integrated 4‑amp circuit breaker protects the unit during use.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the MS4000 keep vehicle settings safe during a battery swap?\u003c\/h3\u003e\n\u003cp\u003ePlug the MS4000 directly into your vehicle’s OBDII port before removing the main battery; the internal backup battery supplies essential power to memory circuits so settings remain unchanged. This avoids reprogramming anti‑theft radios, clocks, navigation presets and other modules.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect wired OBDII connector for an immediate, secure connection\u003c\/li\u003e\n  \u003cli\u003e4.5 Ah sealed lead‑acid internal battery provides stable backup voltage\u003c\/li\u003e\n  \u003cli\u003eMaintains driveability codes, ECU memory, and accessory settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat indicators and protections does it include?\u003c\/h3\u003e\n\u003cp\u003eThe MS4000 uses a green LED to confirm a good connection to the vehicle circuit and an amber LED to warn when the internal battery is low (around 11.6 V). A built‑in 4‑amp circuit breaker prevents overloads or short circuits, helping protect both the tool and the car’s electronics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGreen LED confirms proper hookup to vehicle power\u003c\/li\u003e\n  \u003cli\u003eAmber LED signals internal battery nearing end‑of‑life\u003c\/li\u003e\n  \u003cli\u003e4‑amp circuit breaker for overload and short‑circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan the MS4000 recharge itself, and how long will the backup battery last?\u003c\/h3\u003e\n\u003cp\u003eThe MS4000 includes a 4.5 Ah sealed lead‑acid battery that can hold enough charge to maintain memory circuits during typical battery changes. While it is not a full vehicle starter charger, it is sized to preserve settings for the duration of replacement or diagnostics; replace the internal cell when the amber LED indicates low voltage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12V, 4.5 Ah sealed lead‑acid battery installed inside the unit\u003c\/li\u003e\n  \u003cli\u003eMeant for temporary memory preservation, not starting a vehicle\u003c\/li\u003e\n  \u003cli\u003eReplace internal battery once amber LED indicates 11.6 V or less\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do professionals and DIYers use the MS4000 in real work?\u003c\/h3\u003e\n\u003cp\u003eTechnicians and home mechanics use the MS4000 whenever the vehicle’s battery must be disconnected for service, diagnostics or replacement. It’s convenient for preserving settings during routine maintenance, module replacement, or when vehicles are stored and undergo electrical work.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug into OBDII before disconnecting the battery for uninterrupted memory\u003c\/li\u003e\n  \u003cli\u003eUseful during starter replacement, battery maintenance, or ECU work\u003c\/li\u003e\n  \u003cli\u003eCompact, rugged housing suitable for shop benches and home garages\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The EZRED MS4000 is aimed at automotive technicians, mobile mechanics, fleet managers and informed DIY enthusiasts who need a reliable, plug‑and‑play solution to protect vehicle electronic memories during battery service. If you routinely swap batteries, work on vehicle electrical systems, or maintain vehicles with sensitive anti‑theft and infotainment programming, the MS4000 offers a simple way to avoid time‑consuming reprogramming and retain stored settings.\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: Will the MS4000 start my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The MS4000 provides backup power for memory and electronics only; it is not a starter or jump starter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I know when to replace the internal battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace the sealed internal battery when the amber LED lights, indicating roughly 11.6 volts or lower.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EZRED","offers":[{"title":"Default Title","offer_id":48081465770142,"sku":"B0021UP5KW","price":124.11,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ezred-ms4000-front-view.jpg?v=1785805902","url":"https:\/\/northtrailauto.ca\/products\/ezred-ms4000-automotive-memory-saver-with-built-in-12v-charger-obdii-backup-4-5ah-battery","provider":"North Trail Auto","version":"1.0","type":"link"}