Power Supply 14.4V 48Wh new laptop battery for lenovo Z400 Z400A Z500 Z410 Z510 P400 P500 L12L4K01 L12S4E21 L12S4K01 L12M4K0 L12M4E21-12 Month Warranty Voltage:14.4v Capacity:48wh Model : L12S4K01 L12M4E21 L12M4K01 High Quality Laptop Battery This product is CE & RoHS certified, so buy with confidence!!! Warranty:12 months long