We will send a high-quality Lenovo ThinkPad X240 Laptop Battery compatible with the listed model. This is the finest quality laptop battery available in the market it will replace your faulty (original) laptop Battery. You can expect an optimum level of performance just like you were experiencing with your original laptop Battery. The new Lenovo ThinkPad W510 Battery will meet all the specifications so you can experience a consistent performance out of your laptop. There is no need to worry about the reliability of the product as the replacement Lenovo ThinkPad X240 Laptop Battery we ship goes through proper quality assurance processes. It is a perfect replacement battery, and on the top price is also very competitive.