CSE New Replacement Laptop Notebook Battery for 6 Cell Black Laptop Battery for Lenovo ThinkPad E430 E435 E530 E535 E540 45N1042 45N1043 L11L6F01 L11L6R01 L11S6F01 L11S6Y01 [10.8V 6-cell 5200mAh] Battery type: Li-ion; Capacity: 5200mAh/56WH; Cells: 6-cell; Voltage: 10.8V. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 12-month hassle-free warranty. Removes debris and bacteria lodged deep between teeth and below the gum-line Contain with Durable cells; Low power consumption IC design; Tested with strict quality control standards; Direct warranty from Manufacturer. Operation time: the actual operation time will depend on how much electricity is required by the device and how you use it.