Frequently asked questions

How can I choose the ideal power for a Power Bank?

To find the Power Bank that is most suited to your needs, we recommend choosing one with a capacity at least equal to, or greater than, that of the device to be recharged. For example, the battery of an iPhone 4 is 1420 mAh. A 2200mAh power bank enables you to recharge it completely about 1.5 times. The Ampere indicated in the USB port output of a Power Bank determine the speed with which the device will be recharged. In addition to selecting the right capacity, it is thus also important to choose a Power Bank with output current similar to the one indicated on the battery charger of your device. A smartphone is usually equipped with a battery charger that supplies current at approximately 1A. A tablet, instead, comes with a battery charger that supplies current at approximately 2A. Recharging a tablet with a 1A output Power Bank will require slightly longer charging times than with a 2A Power Bank. Instead, there will be no problems using a 2A output Power Bank with a smartphone, since the output current is controlled by the voltage, which is always 5V, a value established by USB port specifications. You can find further information here.