Ordinary batteries, also known as lead-acid batteries, which electrodes are composed of lead and lead oxide, the electrolyte is an aqueous solution of sulfuric acid. The main advantage is that the voltage stability, cheap; drawback is the low specific energy (ie energy per kilogram of battery storage), life is short and frequent routine maintenance. Vintage ordinary battery life in general around 2 years, and the need to check the height of the electrolyte regularly and add distilled water. But with the development of technology car battery brand rankings, currently general battery life becomes longer and maintenance is also easier. As for the disadvantages of automotive batteries Well, that is the price of ordinary batteries began to become more expensive. Of course, 12v car battery, if you want to play limit battery, long life, can be about 10,000 kilometers per electrolyte fluid level checks, it remains in the middle position. If properly maintained, ordinary battery life can be extended from 3 years to 4 years or 5 years. But now most of the 4S shops are not added electrolyte service car battery production, owners of a friend only to find their own repair shop to complete this operation. Maintenance-free battery, in order to avoid the routine maintenance and repair of its exhaust system design and ordinary batteries are distinctly different, so in theory it does not need to frequently add distilled water or electrolyte. In addition, maintenance-free batteries are generally closed housing, unless professional tools and techniques, usually the owner is unable to self-maintenance. Car battery car battery production _ _ Wei Li Po automotive batteries provided by Shenzhen Wei Lai Po Battery Limited. Shenzhen Wei Lai Po Battery Co., Ltd. (www.weilipo.com) strong, credible, in Shenzhen, Guangdong battery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Wei Li Po battery and you hand in hand into the brilliant, for a better future!