This is not a full-on review but I’ve had these for a couple of months. The car power port adapter displays the vehicle voltage all the time. I typically plug it in every day just to be able to monitor voltage because the vehicle has an analog gauge but that gauge doesn’t let me really know where I’m at voltage wise.
No matter what cable you or others find yourself with in the vehicle you’ve got it covered.
The type C power display device works on either end of the cable works on either end of the cable. It displays voltage for 3 seconds and then amps for 3 seconds and then Watts for 6 seconds etc. The numbers are a little small and slightly hard to read from bad angles.
They both do what they claim and I find them very useful.
The car adapter is 1 for $10 or 3 for $20.
The type-c power display is a 2 pack for $9.
I somehow hit post before I was done adding all of the info.
I bought one of the USB C cables with display on a whim a couple of months ago, when it was on offer for US$3.
Only shows wattage but I’ve found it surprisingly useful, especially if you’re trying to charge your phone in a hurry, or curious what various power banks/power supplies actually provide.
I forgot my laptop charger so had to use it for 2 days to power my 17" Dell XPS which usually has a 130W power supply - I turned down brightness etc… Charged overnight and the battery recovered a little during emails, coffee breaks and lunch to get me through those days. The Essager cable showed the laptop pulling c.40W and the IKEA brick got mildly warm, never hot.
