GFI&reg; High Performance Replacement Laptop Battery ASUS A43 A54 A83 A84 K43 k53 K54 K83 K84 P43 P53 X43 X53 X84 Fit No.: A31-K53 A32-K53 A42-K53 A43EI241SV-SL 5200mAh-12 Months Warranty Battery type: Li-ion; Capacity: 5200mAh/56Wh; Voltage: 10.8V;Cell:6 cell 100% GFI Brand new from manufacturer. Under 100% Aging Test. Up to 500 cycles life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. CE/FCC/RoHS certified for product safety. 24/7 email support, 12-month hassle-free warranty. Grade A Cell ensures fast charging and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time for standard batteries(6-Cell, 5200mAh): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.