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The capacity of advertising power banks shows the amount and size of the charge in the power bank battery, the unit of which is mAh milliamps per hour. For example, the capacity of a power bank may be 90% because part of the power bank's energy is used to transfer the charge from the power bank to the mobile phone. There are different types of power bank batteries, which are: nickel cadmium battery, lithium ion battery, lithium polymer battery. Some people mistakenly believe that the charging speed of the device depends on its capacity, but this is the fact that the charging speed has a direct relationship with the output current. You can buy all kinds of promotional power banks in bulk from Iran Zaman online store. This store operates in the field of producing all kinds of advertising products. Among other advertising products of Iran Zaman company, it also produces all kinds of advertising wall clocks, all kinds of advertising pens, all kinds of advertising glasses, etc.
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