Specification: Battery type: Li-ion Voltage: 11.1V (Compatible with 10.8V) Capacity: 5200mAh Cell: 6 Cells recharge cycles: 500 Operation time: Around 1.5-2.5hours Tips:Before purchase,you'd better make a comparison between your original battery and our item,if same appearance(especially the connector location),it is no problem being suitable for your laptop. Pls note: the connector location is on the right. Compatible Models:( Ctrl + F for fast search ur laptop model) For HP 2000 Notebook PC 2000z-100 CTO Notebook PC 430 Notebook PC 431 Notebook PC 630 Notebook PC 631 Notebook PC 635 Notebook PC 636 Notebook PC Envy 15-1100 Envy 17-1000 Envy 17-1001TX Envy 17-1002TX Envy 17-1013tx Envy 17-1018tx Envy 17-1050ea Envy 17-1085eo Envy 17-1100 Envy 17-1103tx Envy 17-1104tx Envy 17-1110t.