CWK 7800mAh 9 Cell New High Capacity Battery for HP Pavilion DV7-6156NR DV7-6123CL DV7-6153NR DV7-4278NR DV7-6113CL DV7-4173US DV7-4178NR DV7-4157CL DV7-4165DX DV7-4151 DV7-4153 DV7-4138 DV7-4148 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!