These have been on the market for years. I have a bunch of them.
They are a bad gimic in every way.
They generate heat. They waste power. They create light pollution. They are distracting. Their measurement capabilities are often very limited or mediocre or don't update quickly. And finally they often burn out and stop working anyway.
If you want a USB power meter, buy one for $10 or less.
Marginal. A laptop display uses 1000x power and heat than these LCDs. Turning your brightness down for a few seconds saves the same amount.
> They create light pollution. They are distracting.
Personal preference, but for me it is no more distracting than the battery percentage icon next to my taskbar clock.
> Their measurement capabilities are often very limited or mediocre or don't update quickly.
The chip used in all the Aliexpress cables updates multiple times a second and is in line with my standalone power meter.
> And finally they often burn out and stop working anyway.
I'm using these as my daily drivers for all my USB C devices for over a year, and haven't had to replace them. Gave them as stocking stuffers to the family last Christmas and have heard no complaints.
They are a bad gimic in every way.
They generate heat. They waste power. They create light pollution. They are distracting. Their measurement capabilities are often very limited or mediocre or don't update quickly. And finally they often burn out and stop working anyway.
If you want a USB power meter, buy one for $10 or less.