Causes of Acid Creep on Lead-acid Battery Terminals

The main causes of lead-acid battery terminal acid creep include excessive electrolyte, improper charging, overuse, problems in the production process, internal structure problems of the battery, and external factors.

  1. Excess electrolyte
    When there is too much electrolyte inside the battery, it will accelerate the aging of the battery and increase the internal pressure of the battery, causing the electrolyte to overflow and contaminate the battery surface, thereby causing acid creep.
  2. Improper charging
    If the charging voltage is too high or too low, the electrolyte in the lead-acid battery will decompose and the lead plate will lose its protective layer, causing acid creep.
  3. Overuse
    If the lead-acid battery is not used for a long time, the electrolyte inside the battery will decompose and cause acid creep.
  4. Problems in the production process
    Including poor primer during the terminal sealing stage, improper process control, no acid extraction at the end of the formation, excessive acid saturation of the diaphragm, changes in saturation caused by thermal expansion and contraction, etc. These factors will lead to poor sealing at the terminal and rising acid.
  5. Battery internal structure problems
    If the gap between the terminal and the pole is too large, the combination of the terminal material and the epoxy resin has poor sealing, etc., it may also cause the acid to rise along the surface of the pole and terminal.
  6. External factors
    These factors include high resistance in the battery connection wires and connections, improper fixation of pole links, damage to the battery cover sealing structure, long-term micro-short circuiting of the positive and negative poles of the battery, etc. These factors may lead to acid leakage or corrosion, thereby causing creepage. acid phenomenon.

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