Spinel lithium manganese oxide powders were prepared directly by a continuous drop let-to-particle conversion process using an ultrasonic spray pyrolysis method. Nine kinds of precursor solutions were used to synthesize LiMn2O4 powders. The aqueous precursor solutions were made from various combinations of Li-salt, such as Li (HCOO) . H2O, Li (CH3COO) . 2 H2O, Li (NO3), were Mn (HCOO)(2).2 H2O, Mn (CH3COO)(2).4 H2O or Mn (NO3).6 H2O. The total concentration of metal ion is 0.54 mol/dm(3). The particle properties of as-prepared LiMn2O4 Powders were examined by X-ray diffraction (XRD), the Brunauer-Emmet-Teller (BET) method, transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM). The chemical composition of the powders was determined by inductively coupled plasma spectroscopy (ICP). As the results, the powders were identified as single-phase spinel LiMn2O4, and the observed chemical compositions showed, good agreement with the stoichiometry one of LiMn2O4 for all samples. However, the particle morphology could be classified into four patterns depending on the original salts. The as-prepared particles were then used as cathode active materials for lithium-ion batteies and their charge/discharge properties were investigated. Their electrochemical properties in terms of cycle performance were also examined.