Samsung has brought a new laptop battery for its X series. The new battery is named X Models 9cell 73Wh Li-Ion. The accessories will support Samsung X15, X20, X25, X30, X50 and M40 too. X series is always designed for high performances.
9cell 73Wh Li-Ion laptop battery
Samsung X15, X20, X25, X30, X50 and M40 will get extra backup with the supports of 9-Cell 73Wh Li-Ion Battery. I did not get any more information in Google search.