LiFePO4 battery is new model li-ion battery that LiFePO4 as positive material instead of LiCoO2.The raw material of LiFePO4 has variety sources,low price(about 1/5 LiCoO2),non-toxic,good environment compatibility.Not only has the advantages of LiCoO2,LiNiO2 and LiMnO2 materials,but also good thermal stability,superior safety performance(dont worry about explosion)and excellent cycle property. LiFePO4 is considered to be marked "a new era of lithium ion battery is coming", especially as the preferred material of positive materials for li-ion battery.