OMCreate Laptop Battery for Asus K53E X53S X54 X54C X54H, fits P/N A32-K53 / A42-K53 / A31-K53-12 Months Warranty All products are CE-/FCC-/RoHS-Certified by reputable, qualified and accredited testing laboratories. Strict guidelines for compatibility. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Built-in circuit protection. Automatic power cut off at high electric current, voltage or temperature ensures safety and extended battery life. Operation time: 1.5 - 3 hours. Actual operation time varies depending on types of the device and the way it is used. 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.