1.Unique structural design, making the current distribution uniform, excellent conductivity, low internal resistance of the battery, avoiding thermal runaway, ensuring the reliability and safety of the battery 2.High tin-lead-calcium alloy, minimizing grid corrosion and extending battery life 3.Unique active material formula, making the battery have better wide temperature adaptability, excellent high and low temperature resistance and charging acceptance 4.High gas recombination efficiency, avoiding battery water loss, making the electrolyte maintenance-free 5.Strong deep discharge recovery ability, good cycle and floating charge performance