This is a generic, equivalent one, 100% compatible! 7.7V 37Wh replacement/equivalent Rechargeable battery is 100% compatible with Asus B21N1818-2 VivoBook 14 A412 A412D A412FA A412FL A412UA Series Laptop, Brand new, 1 year warranty!

Replaces the following Asus battery part numbers:
C21N1818, C21N1818-2, B21N1818, B21N1818-2, 0B200-03280500, C21PpJH

Compatible with Asus Models:
For Asus Y4200 Y5200F Series;
For Asus VivoBook S14 S412F S412FA S412FJ S412FL S412D S412DA S412DK S412U S412UA Series;
For Asus VivoBook 14 A412 A412D A412DA A412DK A412F A412FA A412FL A412FJ A412U A412UA Series;
For Asus VivoBook 14 F412 F412D F412DA F412DK F412F F412FA F412FL F412FJ F412U F412UA Series;
For Asus VivoBook 14 R424D R424DA R424F R424FA Series;
For Asus VivoBook 14 X412 X412D X412DA X412DK X412F X412FA X412FJ X412FL X412UA X412U X412UB X412UF X412J X412JA Series.

Need Attention: There are two battery C21N1818-1 and C21N1818-2, they are not compatible with each other. Please choose which one you are going to replace and according to your laptop's original battery.

Specifications:
◆ Product type: generic/equivalent
◆ Voltage: 7.7V
◆ Capacity: 37Wh
◆ Battery Composition: Li-ion
◆ Condition: brand new, 1 year warranty!
◆ No memory effect, Over-charge protection, Short-circuit protection.

Package Includes:
1 x 7.7V Replacement Battery for Asus B21N1818-2 VivoBook 14 A412 A412D A412FA A412FL A412UA Series 37Wh