Alkaline batteries battery carbon of 4-5 times, price is 1.5 2 times of carbon. Carbon batteries suitable for use in low current applications, such as quartz clock, remote control, radio, etc.; Alkaline batteries used on high current electrical appliances, such as BP machine, CD, PDA, etc. Carbon batteries contain heavy metal, such as mercury, cadmium, lead, "does great harm to the environment. And environmental protection, alkaline batteries which is different from the carbon battery electrolyte materials and internal structure, do not contain mercury, cadmium, lead and other harm to the environment of heavy metal material. And battery is higher than carbon batteries, use long time. Encourage the use of environmental protection, alkaline batteries, reduce environmental pollution by carbon battery, and thus reduce carbon waste battery pollution to the environment.