LB1 High Performance 6600mAh Battery for Dell Precision M4600 / M4700, fits: 0TN1K5 312-1177 FV993 KJ321

hey scared with laptop ever express the mah or milliamp-hour and WH or what are indicate how long the battery will last the higher the number the longer the battery will run all our berries are brand new and not refurbished they have Texas Instrument chipsets and Samsung sells these components meet or exceed the manufacturers specification you can expect an additional two hours of runtime for a total of five hours and it has a useful life of 300 to 500 recharge cycles we have a 30 day satisfaction guarantee a two-year warranty we offer free shipping from North Ohio as well as free customer service in the United States if you have any questions please call eight six six five one four two five nine zero