{"product_id":"ruemiu-78wh-mr90y-laptop-battery-replacement-for-dell-inspiron-latitude-6-cell-11-1v-upgrade","title":"RUEMIU 78Wh MR90Y Laptop Battery Replacement for Dell Inspiron \u0026 Latitude – 6-Cell 11.1V Upgrade","description":"\u003ch2\u003eUpgrade your Dell laptop's runtime with RUEMIU MR90Y 78Wh Battery\u003c\/h2\u003e\u003cp\u003eRUEMIU introduces an upgraded MR90Y battery designed to replace the original in a wide range of Dell notebooks. The 78Wh capacity is paired with a compact 6-cell lithium-ion package, delivering 11.1V and roughly 7000mAh. In practice, this combination can translate into longer unplugged sessions across daily tasks, creative work, and study sessions, all while retaining a familiar form factor.\u003c\/p\u003e\u003ch3\u003ePower and efficiency you can rely on\u003c\/h3\u003e\u003cp\u003eMoving from 65Wh to 78Wh means more energy stored per charge. In real-world use, you may experience extended periods between plug-ins during tasks such as document editing, spreadsheet work, video conferencing, light photo editing, and long web-browsing sessions. The result is a smoother workflow where time between charges matters less.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey specs at a glance\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eModel MR90Y; Lithium-ion 6-cell pack; 78Wh capacity; 11.1V; approximately 7000mAh; designed for extended use\u003c\/li\u003e\n\u003cli\u003eUpgraded energy density supports longer sessions without a heavier battery\u003c\/li\u003e\n\u003cli\u003eBroad compatibility across Dell Inspiron, Latitude, and Vostro models\u003c\/li\u003e\n\u003cli\u003eSupported P\/Ns MR90Y, XCMRD, FW1MN, 4DMNG, GHY59, N121Y, 0MF69, G35K4, MK1R0, VR7HM, 68DTP, 312-1433, XRDW2, V8VNT and more\u003c\/li\u003e\n\u003cli\u003eBuilt-in Smart IC protection guards against overheating, overcharging, overvoltage, and short circuits\u003c\/li\u003e\n\u003cli\u003eIn the box: MR90Y battery for Dell, repair tools, installation manual, and responsive customer support\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility and parts\u003c\/h3\u003e\u003cp\u003eThe RUEMIU MR90Y module harmonizes with many Dell notebooks, including Inspiron 15-3521, 15-3531, 15-3537, 15R-5521, 15R-5537, 14-3421, 14-3437, 14R-5437, as well as 17-3721, 17-3737, 17R-5737, 17R-5721 and Latitude 3540\/3440 series, plus Vostro 2421\/2521. Always confirm the MR90Y or XCMRD part number before ordering to ensure a clean match.\u003c\/p\u003e\u003ch3\u003eSmart protections for safe operation\u003c\/h3\u003e\u003cp\u003eThe Smart IC inside the pack monitors temperature and voltage to help prevent overheating, overcharging, overvoltage, and short circuits. This layer of protection is designed to support steady performance over longer sessions.\u003c\/p\u003e\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMR90Y replacement battery for Dell\u003c\/li\u003e\n\u003cli\u003eRepair tools and installation manual\u003c\/li\u003e\n\u003cli\u003eResponsive customer support for setup and post-purchase questions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReal-world use and installation\u003c\/h3\u003e\u003cp\u003eUsers appreciate a replacement that feels familiar in size and weight, with a straightforward install. The 78Wh design is well-suited for commuting, school assignments, remote-work setups, and casual gaming when unplugged from outlets.\u003c\/p\u003e\u003ch3\u003eTips to maximize life and performance\u003c\/h3\u003e\u003cp\u003eKeep the battery cool, avoid direct sun exposure, and use cycles that balance discharge and recharge. For best results, follow care recommendations in the installation guide.\u003c\/p\u003e\u003ch3\u003eWhy RUEMIU\u003c\/h3\u003e\u003cp\u003eRUEMIU focuses on compatibility and safe, user-friendly replacements. The 78Wh MR90Y delivers higher energy density while staying aligned with many Dell notebook designs, offering flexibility for on-the-go productivity without excessive bulk.\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: Which Dell models does the RUEMIU MR90Y 78Wh battery fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with many Inspiron and Latitude models; verify MR90Y or XCMRD PN before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What’s included and what protections does it offer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes battery, tools, manual, and support; Smart IC protections guard against overheating, overcharge, overvoltage, and short circuits.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RUEMIU","offers":[{"title":"Default Title","offer_id":48412604956829,"sku":"B0FN6Z7FCB","price":44.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/ruemiu-mr90y-battery-dell-inspiron-78wh-01.jpg?v=1781240595","url":"https:\/\/nexoltic.com\/products\/ruemiu-78wh-mr90y-laptop-battery-replacement-for-dell-inspiron-latitude-6-cell-11-1v-upgrade","provider":"Nexoltic","version":"1.0","type":"link"}