1.Brand new,Grade-A cells,100k safety stock 2.Own SMT to make PCB 3.100% compatibility,1year warranty 4.CE,FCC,ISO9001:2000 1.Type: Li-ion2.Model: LDL-BPS93.Voltage: 11.1V4.Capacity: 4.4AH/6.6AH5.Fit P/N:FRU 42T4522 ,43R19676.Compatible models: X300 X301 Series Laptop battery for IBM X300, X301 Series