Valley Sheng mobile power all use high-density polymer batteries, compared with the traditional 18650 batteries, has a light weight, strong stability, high security does not explode, the appearance of a variety of features.

About the charging frequency, there is a formula to calculate the charging frequency, charging frequency=mobile power battery capacity/cell phone battery capacity*conversion rate, here the conversion rate is the conversion of mobile power to cell phone battery, the conversion rate of 18650 battery cell mobile power on the market is generally in the range of 70%-75%, the Valley Sheng mobile power using high-density polymer battery, the conversion rate is 85%. The battery capacity of iPhone 5s is 1560mah. Using the formula, the number of charge times = 10200/1560*85% ≈ 5.5 times

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