I'm trying to measure the voltage of a powerbank. When I connect the multimeter to its output it displays 5.26V. But after around ten seconds the voltage drops to 1.12V. When I disconnect the multimeter and connect it back again, the sequence repeats itself.
Why is it happening? And more importantly, is it possible to make the powerbank always provide 5.26V?
Perhaps the powerbank senses that the multitool does not represent a proper load and issues some kind of power saving mode?