7800mAh 9-Cell New Laptop Battery Replacement for Asus K53 K53E X54C X53S X53 K5Battery Type: Li-ion; Voltage: 11.1V (Compatible with 10.8V); Capacity: 7800mAh; 9 Cells Compatibility with Asus A31-K53 A32-K53 A42-K53 A43 A53 A54 A83 A84 K43 K53 K54 K84 P43 P53 Pro4J Pro5N X43 X44 X53 X54 X5P X84 100% New from Manufacturer, About 800 recharge cycles over the life of the battery. Grade A cells ensure fast charges and low power consumption; FCC / CE / RoHS Certified, Built-in circuit protection ensures both safety and stability. Warranty: 12 Months warranty. 24 x 7 email support.