LB1 High Performance 6600mAh Battery for Dell Studio 17 1745 1747 1749 fits: N855P U164P 312-0186

hi this is anthony de pinna with laptop battery express this nine self-doubt replacement battery is rated at 7800 milliamp hours and will give you about three to four hours of runtime depending on your energy use the mah or milliamp power rating indicates how long the battery will run on to charge the higher the mah number the longer the battery will run all of our batteries are brand new with Samsung power sells a Texas Instruments computer chip and they're never used or refurbished all batteries from laptop battery Express come with a 30 day money back gaurantee and a full 12 month warranty if you're finding less expensive batteries on line please be aware that it is because they use cheap quality power cells inside the cartridge that can easily wear out in six months all of our batteries shipped from the United States and all air shipments placed by 6 p.m. Eastern Time shipped the sa