There are a variety of reasons why Vidian batteries fail,

Battery charging and discharging process is the process of electrochemical reaction, discharge, lead sulfate, lead sulfate reduction to lead oxide when charging.

Another reason leading to the lead-acid battery charging heat is vulcanization, vulcanization directly leads to the increase of the battery internal resistance, which further causes the lead-acid battery charging heat, heat and oxygen cycle current rise, so the battery is seriously vulcanized, the probability of thermal runaway is very high.

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In order to increase the capacity of lead-acid batteries, the current number of electric vehicle lead-acid battery plates is generally used to increase the number of plates, which leads to the bulkhead is relatively thinner than that of other batteries, the lead sulfate of the negative plate crystallizes and grows, and a small amount of lead sulfate is left in the bulkhead after charging. Once the lead sulfate left in the bulkhead is reduced as lead, it accumulates more. The lead-acid battery battery will have a micro short circuit, which is called “lead bridge”.