Battery Encyclopedia


The main components of maintenance free lead-acid batteries


Maintenance-free lead-acid batteries are mainly composed of positive and negative electrode plates, partitions, shells, electrolytes, and terminal blocks. The chemical reaction of discharge relies on the active substances of the positive and negative plates under the action of electrolytes (dilute sulfuric acid solution). The grid of the electrode plate is made of lead-calcium alloy, so the amount of water decomposition generated during charging is low, and the evaporation of water is also low. In addition, the shell adopts a sealed structure, The released sulfuric acid gas is also very small, with the advantages of no need to add any liquid, less corrosion to the wiring pile head, wires, and vehicle body, strong overcharging resistance, high starting current, and long battery storage time.