Used in the world's top capsun,yamaha audio widely exported to high-end hotels in Europe and the United States, the price of $1200 to milli*** of dollars a set of high prices, mostly used in aristocratic families and hotels. ***all, large-capacity supercapacitors are also being developed. The test method and test conditi*** of leakage current of aluminum electrolytic capacitor are as follows: at 25 ℃, a 1000 ω protective resistance is connected to the rated voltage in series of the tested capacitor to measure the leakage current.