There are three commonly used batteries, lead-acid batteries, nickel metal hydride batteries, lithium ion batteries. Lead battery electric vehicle is the commonly used batteries, the disadvantage is that weight is bigger, broken life, memory effect, advantage is low price. Lithium ion battery is commonly used normal cell phone batteries, advantages of light weight, large capacity, long life, no memory effect, defect is poor stability (is the safety issues). Nimh batteries should be bound and between. Due to the electric voltage and current of motor is very high, originally the lithium ion battery is the best choice, but because of security issues, has been difficult to apply success, only a few foreign companies, by changing the internal composition, increase the protection circuit method, better solved the problem. So if you want to buy lithium battery electric vehicle, be sure to have a look at the battery manufacturer.
　　Usually says "is actually lithium-ion batteries, lithium batteries common simply points for lithium cobalt and lithium manganese and iron lithium, said before the safety of lithium-ion batteries is refers to the lithium cobalt, but through technology progress, the manganese lithium and lithium iron completely can guarantee security, otherwise we nearby of electric tools, IT products, such as use lithium electricity most of the goods does not have become the ticking time bomb? Especially of lithium iron batteries will be in the next few years the electric car is most likely to use efficient battery, such as byd's electric cars with the "battery" is actually of lithium iron batteries.
　　Cycle life of lead acid battery is controlled in 300 times, lithium manganese battery cycle life of 500-800, lithium iron battery cycle life of 2000 times, Toshiba new lithium electricity reached more than 5000 times.
　　Lead-acid battery charging time for six to eight hours or more commonly, lithium-ion batteries use a dedicated charger, charging time only 2-3 hours, Toshiba new li-ion battery charging for a few minutes to recover 90% of the battery.
About 17 kg 48 v10ah lead-acid battery, and the same capacity lithium battery for only 3-5 kg.
　　Lead-acid battery capacity will fall by more than 40% during the winter, has good temperature adaptability of lithium battery, even in winter - 20 ℃, no more than 15% drop in its capacity.
　　The harm of lead is not much said, lithium batteries in the production and use, will pose no pollution to the environment.
　　Cost of the most important questions, in fact, the lithium electricity costs than lead-acid cost your a lot, under the condition of small energy storage battery, lithium electricity than lead acid more competitive. Expensive lithium electricity today is because its technology continues to progress, the old production process out quickly, to recover the cost in a short time, must have higher profit margins than other industry, when mature technology development, industry scale formation, lithium electricity price will be cheaper than lead acid also.
　　Technology in constant progress, of course, lead acid lithium electricity replace problem is not the future direction of the battery, li-ion battery is not revolutionary advances in technology, the scientific community more inclined to the direction of the fuel cell, in the foreseeable future, the fuel cell is likely to be the human way of the ideal solution.