OMBAR New Laptop Battery for Apple A1309 A1297 (Early 2009, Mid 2009, Mid 2010 Version) with Two Free Screwdrivers Sonny Grade A battery Cell Li-Polymer 7.4V 13000mA 95Wh Sony Grade A cell: A good battery cell can be stored and released energy steadily for a long time ,the defective is not. So batteries can determine the battery is good or bad. Long Life: Up to 500 recharge cycles over the life of the battery , Around 2.5 hours.Actually, depend on the amount of electricity required by the device and how to use High-End PCB with Texas Instruments Master Chip: Lead-free PCB has small internal resistance, less heat advantages, conversion efficiency of power more than 85% Lithium polymer battery: Lithium polymer battery electrolyte is a solid or gel rather than a unstable liquid, so more efficient safer Worry-free: 12-month warranty, 30 days' refund policy and friendly customer service