This Lenovo B50 battery is also compatible with the B40, N40, N50, M440 and G550s models.
We use the highest quality lithium-ion battery cells and components that charge faster, last longer and weigh less than cheaper, lower quality batteries. Low quality batteries can wear out in just a few months. Our batteries can last up to 5 years.
This battery carries a full 1 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery, even if it is not our fault.