This ASUS replacement battery pack is a 2200mAh, 11.25, rechargeable, removable, Li-ion battery designed to work with ASUS F540LA-DM1155T. The Hi-Quality battery meets or exceeds original manufacturer specifications for the ASUS F540LA-DM1155T Laptop Battery in quality, durability, and performance. Li-ion batteries do not suffer from the memory effect. They generally last between 300-500 charge/discharge cycles. All laptop batteries are tested for 100% quality control assurance. This battery for ASUS F540LA-DM1155T includes a one year warranty. We offer a 30 day money back guarantee and fast shipping on all of our products.