Thanks, keep it coming, you’re giving me ideas. I have three USB multimeters, two of which I’ll use for the test because they are identical and as luck would have it, they each have two outputs. So I can hook up a power bank to one outlet, watch the current at 2.0 amps, and then hook up the second power bank through the same meter. I’ve already had that panel up to 2.5 amps on two multimeters, so that should be doable.

The two multimeters I’m using have large fonts in color, easily read in daylight. I won’t be using the third multimeter; tested it today and it worked but the display was not easily read in sunlight, dim B&W, small font.

Edit: The multimeters I’m using are:
Two DROK Digital Multimeter USB 2.0
One Eversame USB Digital Power Meter Tester Multimeter

The Eversame is difficult for me to read in daylight. Drok units are easily read in daylight; volts & amperes seem to be consistent between all three.

No affiliation. I wouldn’t know these companies existed were it not for Amazon’s marketing.