This is a Brand New Gateway Replacement Battery Restore your computers original battery life with a fresh replacement battery. Enjoy the running time you had when your computer was new. This powerful battery for the Gateway Series is built with the highest quality Li-Ion 8 Cells. Compatible Models: Gateway 7200, 7300, 7400, M520. Replaces part #s 101339, 101340, 101341, 101343, 102738, 102739...