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Colloidal batteries are a developmental classification of lead-acid batteries by adding a gelling agent to the sulfuric acid to make the sulfuric acid electrolyzed into a colloidal state. A battery in which electro-hydraulic is colloidal is often referred to as a colloidal battery. The difference between colloidal batteries and conventional lead-acid batteries is further developed from the initial understanding of electrolyte gelation to the electrochemical properties of electrolyte substrates and their application in grids and active materials. Its most important feature is: to produce a better battery with a small industrial cost, its discharge curve is straight, the turning point is high, its energy and power are more than 20% larger than conventional lead-acid batteries, and the life is generally conventional lead. The acid battery is about twice as long, and the high temperature and low temperature characteristics are much better.