{"product_id":"asuncell-rj40g-63wh-laptop-battery-for-dell-latitude","title":"ASUNCELL RJ40G 63Wh Laptop Battery for Dell Latitude","description":"\u003cp\u003e\u003cstrong\u003eASUNCELL RJ40G is a direct-fit 63Wh lithium-ion replacement battery engineered to restore full runtime for compatible Dell Latitude and Precision laptops.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen your Dell Latitude 14\/15 or Precision 15 shows shortened battery life or unreliable charge behavior, swapping the cell pack can be the fastest, most cost-effective fix. This ASUNCELL RJ40G 63Wh battery matches the original battery's voltage and capacity, includes built-in protections against overcurrent and temperature extremes, and is designed to meet the form factor and connector layout of listed Dell part numbers.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Dell models and part numbers work with this battery?\u003c\/h3\u003e\n\u003cp\u003eThis replacement fits several Latitude and Precision series that use the RJ40G-style battery. Confirm compatibility by matching your laptop's existing part number or the battery label before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models: Dell Latitude 14 5420, Latitude 15 5520, Precision 15 3560.\u003c\/li\u003e\n  \u003cli\u003eCommon compatible part numbers: RJ40G, 01K2CF, 075X16, WY9DX, 0WK3F1, 0M3KCN, 005R42.\u003c\/li\u003e\n  \u003cli\u003eBe aware: some laptops offer two battery size options (63Wh and 42Wh); choose the size that matches your original pack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow reliable and safe is the ASUNCELL RJ40G battery?\u003c\/h3\u003e\n\u003cp\u003eThe RJ40G pack uses lithium-ion cells with integrated safety circuitry to help prevent overcharge, overdischarge, and excessive current draw. It is rated for about 500 recharge cycles under normal use and includes thermal safeguards to reduce risk during charging and operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVoltage and capacity: 15.2V, 63Wh (3941mAh).\u003c\/li\u003e\n  \u003cli\u003eSafety functions: overcurrent, overcharge, overdischarge protection, and temperature control.\u003c\/li\u003e\n  \u003cli\u003eDurability: designed for roughly 500 charge cycles with typical laptop usage patterns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before buying and installing this battery?\u003c\/h3\u003e\n\u003cp\u003eDouble-check your laptop’s current battery label, service tag, or system settings to confirm the part number and battery capacity. Use anti-static precautions and follow Dell’s disassembly guidance or a professional service for safe installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original battery part number (e.g., RJ40G or WY9DX) and capacity (63Wh vs 42Wh).\u003c\/li\u003e\n  \u003cli\u003ePower off, unplug, and ground yourself before replacing the battery to avoid damage.\u003c\/li\u003e\n  \u003cli\u003eKeep screws and fasteners organized; take photos if needed to ensure correct reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and support come with the battery?\u003c\/h3\u003e\n\u003cp\u003eASUNCELL provides straightforward after-sales protection: a 30-day full refund window plus a 12-month warranty. For any problems during the first year, customer support promises a timely response to troubleshoot or arrange a replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e30-day full refund if the product is unsatisfactory.\u003c\/li\u003e\n  \u003cli\u003e12-month limited warranty for defects and performance issues.\u003c\/li\u003e\n  \u003cli\u003eSupport response typically within 24 hours via the \"Ask a Question\" contact method.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The ASUNCELL RJ40G 63Wh battery is intended for Dell Latitude and Precision users who need a reliable OEM-style replacement to recover lost runtime without upgrading the entire laptop. It's well suited for professionals, students, and technicians who want a drop-in battery that matches original specifications and includes protections and warranty coverage. If your machine originally shipped with the 63Wh pack and you want consistent voltage and fit with factory behavior, this battery is a practical, budget-friendly replacement option.\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: Is this battery an exact replacement for Dell RJ40G?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this ASUNCELL unit is designed to match RJ40G specifications (15.2V, 63Wh) and fit the listed Dell models when your original was the 63Wh version.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What if my laptop originally had a 42Wh battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your original battery label: if it shows 42Wh (WY9DX), order the 42Wh pack instead—this listing is for the 63Wh RJ40G replacement.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ASUNCELL","offers":[{"title":"Default Title","offer_id":48413644587165,"sku":"B0DK78RC3L","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/asuncell-rj40g-front-view.jpg?v=1781275946","url":"https:\/\/nexoltic.com\/products\/asuncell-rj40g-63wh-laptop-battery-for-dell-latitude","provider":"Nexoltic","version":"1.0","type":"link"}