CWK 7800mAh 9 Cell Capacity Battery for Asus A32-K53 A42-K53 A43 K43 K53BY K53E K53F K53SJ X84 Asus A43S A45A A53 K43B K53E K53S K54 X43T X53 A32-K53 A42-K53 ASUS K53 K53E K53F K53U K53S K53S Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 7800mAh (Better than 6600mAh) 90 Day Money Back. Buy with confidence!