Fancy Buying New Laptop Battery for HP Compaq 510 550 610 Series/Business NoteBook 6720S 6730S 6730 6735S 6820S 6830S,fits P/N HSTNN-IB51 HSTNN-IB62-12 Months Warranty [Li-ion 6-Cell 5200mAh]

hi this is Sarah - voice with laptop battery express this six l HP battery is rated at 5200 milliamp hours or 58 watt hours and will give you about two to three hours of runtime depending on your energy use the mah or milliamp hour and the W HR or watt hour indicates how long a battery will run on a charge the higher the milliamp hour and watt hour number the longer the battery will run all of our batteries are brand new with Samsung Power Cells a Texas Instruments computer chip and are never used or refurbished if you're finding less expensive batteries on line please be aware that it's because they use cheap quality power cells inside the cartridge that can easily wear out in six months our batteries typically have a service life of three to five years all batteries from laptop battery Express come with a 30 day money back gaurantee and a full 12 month warranty all of our batteries sh