Premium Quality Battery For ASUS VivoBook X512 F512DA F512FA F512FB F512FJ X515 X515MA A509FB A509FJ C21N1818 B21N1818 Laptop Battery

Remember kindly: You need professional technology to change the built-in phone battery. We recommend that you go to a mobile phone repair shop to install it.

Battery Model:C21N1818 B21N1818 Battery Capacity: C21N1818-1:4850mAh C21N1818-3:4385mAh C21N1818-2 Compatible with :  C21N1818-1 For ASUS Vivobook 15 A512/F512/X512 A512JA F512DA F512FA F512FB F512FL F512FJ F512UA F512UB X512DA X512DK X512FJ X512FL X512UA ect., C21N1818-3 For ASUS A509 F509 X509 Series A509FB A509FJ A509MA A509FL F509JB F509FA F509FB F509UJ X509FL X509FB X509JA X515 X515M X515MA F515 F515JA X515E ect., C21N1818-2 For ASUS FL8700F X412FJ X509F X512DA V4000F/D  Battery Country of Origin: China

Important: New Lithium Ion batteries must be FULLY CHARGED and FULLY DISCHARGED 2 to 3 times, before being FULLY CONDITIONED. Please remember that a new Lithium-Ion battery's full performance and longevity is only achieved after 2 to 3 complete charge and discharge cycles.