Specification: Battery type: Li-ion Voltage: 11.1V (Compatible with 10.8V) Capacity: 5200mAh Cell: 6 Cells recharge cycles： 500 Operation time: Around 2-3 hours Compatible Models：( Ctrl + F for fast search ur laptop model) For HP/Compaq For HP 550 Compaq 610 Business Notebook 6720s Business Notebook 6720s/CT Business Notebook 6730s Business Notebook 6730s/CT Business Notebook 6735s Business Notebook 6820s Business Notebook 6830s Compatible Part Numbers： For HP/Compaq 451086-121,451085-141,451086-161,451568-001,456864-001,GJ655AA,HSTNN-IB51,HSTNN-IB52,HSTNN-IB62,HSTNN-XB51,HSTNN-XB52.
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