A reliable, hi performance laptop battery is essential to today’s fast paced lifestyle. Lucky for you that Amstron Power Solutions provides you with quality. The LUN-22 laptop battery is designed to be 100% compatible with Uniwill OEM part numbers 351-3S6600-S2M1, and 351-3S8800-S2M1. Amstron Lithium-ion batteries provide a superior and reliable replacement batter that fits the Alienware Area51M series, and Uniwill N766 series notebooks. .