This Lenovo 45N1185 battery is compatible with the IdeaPad and Eraser B40, B50, N40, N50, M4400, M4450 and V4400 models. To make sure you order the correct battery match the part number listed on the original battery with "45N1185" or another part number below.
We use the highest quality lithium-ion battery cells and components. Higher quality batteries last longer and weigh less than cheaper, lower quality batteries. Lower quality batteries can wear out in just a few months. Our batteries can last up to 5 years.
This Lenovo 45N1185 battery carries a full 2 Year warranty and is tested and inspected 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.