Replaces OEM # C31N1636, 0B200-02580000, 0B200-02580100, 0B200-02580200 Fits: ASUS VIVOBOOK PRO 15 M580GD, M580VD, N580GD, N580VD, N580VN, NX580GD, NX580VD, UX502VD, X580GD, X580VD, X580VN Specs: 11.49V, 47WHR, 4090MAH, 3 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety