This is a brand new Lenovo 57Y6448 battery for the IdeaPad U160 models. This 57Y6448 battery features the highest quality lithium-ion cells and components that charge faster and last longer. Li-ion battery technology provides longer run times with less weight.
Li-ion batteries are not subject to the memory effect common with older battery technology. This 57Y6448 battery is 100%
compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.