PUSTUN battery should consist of positive plate, negative plate, separator,  tank,cover, safety valve, reflow bar, terminal, electrolyte.

1.The battery structure shall be such that it does not leak electrolyte during the service life.

2.The Preston battery is fully sealed and leak-proof.

3.The outer casing has no abnormal deformation, cracks and smudges. The upper cover and the terminal are not damaged. There is no acid mist overflow during normal operation.

4.When the ambient temperature is between -10 and +45 °C, the battery performance index should meet the normal use requirements.

5.The floating charge operating life of the battery at an ambient temperature of 20 to 25 ° C shall not be less than 12 years.

6.After the battery is sealed for 90 days, its charge retention capability is not less than 80%.

7.The sealing reaction efficiency of the battery is not less than 95%.