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I need guidance on how to calculate how long I can power my Pi from an external power bank when I have USB and GPIO peripherals connected.
I am considering buying this power bank pack. It says that is delivers: Output: USB1: 5V/1.0A ; USB2: 5V/2.4A and has Capacity: 5000 mAh. Would this power the pi for at least an hour with a wifi dongle and a gpio type lcd screen?
Any pointers on how to make this calculation and what equipment/measurements I should take to make an educated decision on this purchase?