Replaces OEM # BTY-M48 Fits: MSI PRESTIGE PS42, MSI PRESTIGE PS42 8RB, MSI MODERN PS42 8RC, MSI MODERN PS42 8RA, MSI MODERN PS42 8MO, MSI MECHREVO S1-C1 Specs: 15.2V, 50WHR, 3390MAH, 4 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