The Li-polymer battery is using file alloy as the positive electrode. It uses polymer conductive materials, polyacetylene, polyaniline, or poly-p-phenol for the negative electrode. It uses organic solvent as the electrolyte. The specific energy of the lithium-polyaniline battery can reach 350W.h/kg. but the specific power is only 50-60W/kg, the use temperature is -40-70 degrees, and the lifetime is about 330 times.