CWK&reg; 7800mAh 9 Cell New High Capacity Battery for ASUS X54 X54C X54H X54HR X54C,Series A32-K53 ASUS P53SJ P53S P53XI Pro4J Pro4JE A32-K53 K54HY K54L K53BY K53E K53F A32-K53 K53TK K53U K53Z K53S K53T 90-N3V3B1 K53T K53U K53S/E K53SD K53U A32-K53 K53SJ K53SD K53S K53T K53J K53S K43J K43S K43U K43BY K53SD K53SJ K53SV K53SC K53BR K53TA K53J K53S K53T K53SM K53SV K53TA K53B K53E K53F K53J X53BR X53BY K53S K53T A31-K53 K53 X43 X84HO P43E P43S A41-K53 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!