Will there be 3 amps if you connect two power banks?

Question

Electronics

there are two power banks with 2A out, if they are paralleled - will there be 5 volts and more than 3 amperes? (don't hit with sticks)

Answer 1

It's better not to do that. In power banks, a feedback converter (OS) works, which measures the voltage at the output and regulates it more tightly so that it is 5 volts. Even the same models of banks, due to the error of the OS circuit, can tend to different voltages, for example, the first to 5.02V, and the second to 5.07. The second one gives out 5.07V, the first one waits until the voltage drops to 5.02 and does nothing. It may work, but it will work clumsily :)

Answer 2

In parallel - yes, the amperage will increase.
The voltage will remain the same.

Answer 3

Although there is a battery inside, there is a pulse voltage converter at the output, so the rule for adding current in parallel does not work that way.
But if you really want to, you can try, but you need to understand that one of the two power banks will work to the maximum and it is quite possible that one of them, or both, will not withstand such mockery.

Answer 4

And how then to solve the question, maybe through a transistor?
Does my Sony XB30 speaker charge from a 5V 3A outlet? There is a usb adapter <-> a proprietary input to the speaker, but the speaker is charged from a power bank with such a supercharge for 6-12 hours .... (equals = does not charge at all)
Often at a picnic, it sits down completely at + -30% .... with I'm friends with a soldering iron, I sort out the details - but I don't rummage)