France plant since 1859, invented the lead-acid battery, and has been for more than 100 years of history. It, like all other chemical power sources, is an energy and chemical energy conversion device. Because of its high EMF, charging and discharging of reversible electrochemical principle of good, wide operating temperature range, clearly, is easy to grasp and raw material production technology advantages such as abundant and inexpensive, access to a wide range of applications. With the development of science and technology, since the 50 's onwards, continued on the traditional lead-acid batteries for technological transformation. Especially valve-controlled sealed lead-acid battery (VRLAB) come out,Because it overcomes the drawbacks of acid is easy to spill headaches, and electronic equipment together, meet the requirements of users easy to use, thus enabling its broader applications. It is true that as a kind of new technology, new products on the market, you need to have a continuous improvement process, in addition to manufacturers ' product technologies and continually raising the quality of external, also require users to understand the use and maintenance of the new products, making them more reasonable and more permanent.
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