LiIon, 10.8V, 4400mAh, 6 Cells, OEM P/N: AS10D31, 3ICR19/65-2, AK.006BT.080 for NV50A, NV51B, NV53, NV53A, NV55C, NV73A, NV79, various Acer Aspire und Travelmate, Visit the product finder for more compatibilities on http://www.originstorage.de