Li-Ion replacement Lenovo SQU-409 Battery for Lenovo Y200, NEC Versa S940, and Packard Bell Easy Note A7 Series notebooks. The LLE-21 is designed to replace OEM part numbers 916C3150F, ED1, SQU-409 and more. All Amstron brand batteries are manufactured with the highest quality cells and parts and are guaranteed to meet or exceed original specification.