Looking for a true-capacity B31N1631 notebook battery? Chengyuan’s B31N1631 model is 100% brand new, and it offers a true capacity of 42W and a output of 11.52V, which suits the Asus VivoBook 15 series prefectly. It’s is built with Grade A ICs and Grade A Li-polymer cells, which is manufactured to meet or exceed the original specifications, ensuring top performance in fasting charging and longer battery lifespan.

Our B31N1631 model is a replacement type, which is compatible with Asus VivoBook 15 X505BP, X505BA, and X505BA-BR016T laptops. Each model will be strictly tested before shipment to ensure good compatibility and safety. We offer a one-year warranty and happy after-sales services. Welcome to let us know if you want customized services!