Because of the general non-maintenance-free batteries need to add electrolyte, so the top of the battery with a protruding mouth rehydration be unscrewed. The maintenance-free battery factory had been closed to the electrolyte in the battery, so the battery is flat top car battery factory, even if there is fluid in the mouth is not easy to open, but also within the battery life does not need to open. ● What is the role of the car battery? Car battery's main role is to provide enough power to support the vehicle start, and secondly, in the off state to provide electricity to support vehicle electrical appliances, as well as long-term maintenance of electrical equipment parked dormant. In addition, the battery also plays a role in stabilizing the circuit. Before we begin to explain several data, these data need to understand in order to read the article Rated voltage: Under normal conditions the battery voltage of 12V, our home base petrol vehicles are 12V battery capacity: the capacity of the unit is safe When (Ah) Which car battery, which is our most important project today compare car battery, but also the focus of debate forums. Low start-up current (CCA): When the battery we saw above, in addition to two data but also have a logo is "CCA" car battery, said the low temperatures, the battery can provide the starting current to the engine. That value is the battery discharge at -18 ℃ for 30 seconds, the battery voltage at the limit of the current feed before discharge. Technology and process this indicator and the battery has a great relationship. Reserve capacity (RC): means that when the charging system fails, the battery can provide the minimum amount of time the car load of work, that is the value of the battery at 27 ℃, with 25 amps current discharge to the termination voltage of 10.5 volts of time (in minutes) . Car battery car battery _ _ Benxi City, Wei Li Po car battery 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 car battery and you hand into the brilliant, for a better future!