This brand new Genuine Lenovo ThinkPad U430 laptop battery features lithium-ion cells. This battery fits all the Lenovo models in the U430 series, including the U430p and the U430t. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty.