High Performance Lithium Ion Main Battery Pack for eMachines eM250 Netbook OEM Part # equivalent: UM08A31, UM08A51, UM08A71, UM08A72, UM08A73, UM08A74, UM08B31, UM08B71, UM08B72, UM08B73, UM08B74, LC.BTP00.017, LC.BTP00.018, 934T2780F, B-5872H, ACERAS1W_OEM, AR-ASONEHW |