{"product_id":"brtong-laptop-battery-b31n1911-for-vivobook-42wh","title":"BRTONG Laptop Battery B31N1911 for VivoBook 42Wh","description":"\u003cp\u003e\u003cstrong\u003eHigh-quality replacement battery BRTONG B31N1911 (42Wh, 11.55V) built to restore power to compatible Asus VivoBook Flip 14, M413, F413 and related models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your laptop no longer holds a reliable charge or shuts down unexpectedly, this replacement pack from BRTONG is engineered to match the original specifications while meeting safety certifications. The cell configuration delivers 42Wh at 11.55V and is designed as a direct swap for the listed part numbers including B31N1911 and C31N1911 and OEM codes like 0B200-03580300. Units are certified to UL, CE and FCC standards and ship with a 12-month warranty and customer support.\u003c\/p\u003e\n\n\u003ch3\u003eWill this battery fit my Asus VivoBook model?\u003c\/h3\u003e\n\u003cp\u003eThe BRTONG B31N1911 is intended as a compatible replacement for many Asus VivoBook Flip and VivoBook 14 variants. Check your current battery part number or laptop model designation against the compatibility list before purchase. If the part numbers match one of the supplied alternatives, the physical connector and form factor should be compatible.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces part numbers: B31N1911, C31N1911, 0B200-03580300, 0B200-03580500.\u003c\/li\u003e\n  \u003cli\u003eCompatible models include: TM420IA, M413, TP470, F413, S413, X413, X421 and related series.\u003c\/li\u003e\n  \u003cli\u003eWorks with specific SKU variations such as TM420IA-DB71T, M413DA-EB005T, and F413FF.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will the battery last and what capacity can I expect?\u003c\/h3\u003e\n\u003cp\u003eThis battery has a rated capacity of 42Wh which reflects the energy storage equivalent to the original pack for compatible models. Actual run time depends on your laptop’s processor, screen brightness, and workload. BRTONG provides quality control to ensure stable performance close to original specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal voltage: 11.55V for correct power delivery to the system.\u003c\/li\u003e\n  \u003cli\u003eRated capacity: 42Wh for balanced runtime and portability.\u003c\/li\u003e\n  \u003cli\u003eCell type: Lithium-ion for consistent charge\/discharge cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this battery safe and supported after purchase?\u003c\/h3\u003e\n\u003cp\u003eBRTONG batteries are produced and tested to meet widely recognized safety standards and include overcurrent and short-circuit protections built into the pack design. Each product is certified to UL, CE and FCC where applicable and undergoes inspection prior to shipping. If any issue arises, the product includes a 12-month warranty and direct customer support for troubleshooting or replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSafety certifications: UL, CE, FCC compliant where applicable.\u003c\/li\u003e\n  \u003cli\u003eManufacturing controls and compatibility checks to reduce installation issues.\u003c\/li\u003e\n  \u003cli\u003e12-month warranty and prompt email support with responses typically within 24 hours.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know before installing the replacement pack?\u003c\/h3\u003e\n\u003cp\u003eBefore installing, power down the laptop and remove any external power source, then follow the manufacturer guidelines for battery replacement. Use basic tools and take anti-static precautions; if you’re unsure, a technician or authorized service center can perform the swap. Keep your original battery number to confirm fit and retain packaging until you verify operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm compatibility by matching the part number on your old battery.\u003c\/li\u003e\n  \u003cli\u003eTurn off the laptop and disconnect the charger before opening the case.\u003c\/li\u003e\n  \u003cli\u003eObserve anti-static care and reassemble thoughtfully to avoid connector damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWho is this for?\u003c\/strong\u003e The BRTONG B31N1911 replacement battery is aimed at VivoBook and VivoBook Flip owners whose original battery is worn, swollen, or no longer meets daily runtime needs. It suits DIY-savvy users seeking a direct-fit replacement, IT technicians managing device fleets, and anyone who needs a reliable, certified battery alternative with warranty coverage and responsive support. If your Asus model appears in the compatibility list and you want a cost-effective restoration of mobile battery life, this pack provides a practical 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: Does this battery match the original Asus part number?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It replaces B31N1911\/C31N1911 and OEM numbers like 0B200-03580300; verify your old battery label before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty and support does BRTONG provide?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: BRTONG offers a 12-month warranty and responsive email support, typically replying within 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BRTONG","offers":[{"title":"Default Title","offer_id":48413405610141,"sku":"B0FNLCHYNC","price":48.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/brtong-front-packaging.jpg?v=1781263757","url":"https:\/\/nexoltic.com\/products\/brtong-laptop-battery-b31n1911-for-vivobook-42wh","provider":"Nexoltic","version":"1.0","type":"link"}