Model Name: B31N1912
Condition: Brand New
Battery Type: Li-ion
Battery Voltage: 11.55V
Battery Capacity: 42Wh/3550mAh

Compatible Paer Number:

B31N1912 C31N1912 0B200-03680000 0B200-03680100.

Compatible Models: (use "Ctrl+F" to find your model quickly)
Asus VivoBook 14 E410MA Series

VivoBook 14 E410MA-EK007TS, 14 E410MA-EK017TS, 14 E410MA-EK018TS, 14 E410MA-EK026TS,
VivoBook 14 E410MA-BV1169TS, 14 E410MA-EK028TS, 14 E410MA-EK087T, 14 E410MA-EK211T,
VivoBook 14 E410MA-EK319T, 14 E410MA-EK321T, 14 E410MA-EK327TS, 14 E410MA-EK367TS,
VivoBook 14 E410MA-EK378T, 14 E410MA-EK505T, 14 E410MA-EK542T, 14 E410MA-EK946TS,

VivoBook 14 E410MA-EK991TS,

Asus VivoBook 14 L410MA Series

VivoBook 14 L410MA-BV037TS, 14 L410MA-BV053TS, 14 L410MA-BV058TS,

VivoBook 14 L410MA-BV076TS, 14 L410MA-BV077TS,
Asus VivoBook E410KA E410KA-EK139TS Series
Asus VivoBook E510KA E510KA-EJ033TS Series
Asus VivoBook F414MA Series
Asus VivoBook L510MA Series
Asus VivoBook R522MA Series
Asus VivoBook E510MA Series

For the new battery , we suggest that all of our customer should full charge it by AC power adapter ,because takes a long period, the capacity was strain out by inner PCB circuit, in order to protect your battery life,you can full charge to 100% and drain to 1% 2 times,then the capacity will recover.