Replacement notebook battery for GATEWAY NV50A NV51B NV53 NV53A NV55C NV73A NV79 NV79C various Acer Aspire & Travelmate models; replaces AS10D31, 3ICR19/65-2, AK.006BT.080; Specs Lithium Ion 6-cells 10.8V 4400mAh 48Wh