HDC85C

Excellent device with useful information, clear graphics, and a reasonable price I’ve used it to learn a lot about charging my devices, and which power supplies are best for specific situations. I also used it to measure power consumption of devices to help me estimate runtime and battery capacity needs. It seems durable so far, and it’s incredibly small and unobtrusive.

Great little Multimeter. Really like this item, very handy to have. Lets you check power and life your battery has. Very easy to use. Price was reasonable. Shipped quickly. Display is easy to see and auto adjusts with built in gyro. Like the metal storage case with window.

Very nifty little device. Works right out of the box and provides USB power information that wasn't available to me previously.

Works good so far! Will provide updates IF it stops working and/or malfunctions in any way.

When I have a tool or instrument I like when it’s easy to use without a lot of complicated screens and pressing buttons, and all kinds of multifunction type of things. But this meter you simply just plug it in and that’s it. There are 2 buttons, however, I find that the instructions aren’t quite clear and as always, you need to do your own poking around to find out in your mind how these things work. But most of all it gives you the basic data voltage amperage, wattage, and watts hours. It will show you the accumulative watt hours. The screen auto rotates or what you call gravity screen. Is small and compact and completely enclosed, not like the other ones that look like they have two circuitboard screwed together like a sandwich. It seems to do PD charging. I am learning more about this in their protocols. also with the other USB meters there’s an adapter that you have to plug in for the C type protocol. And it seems like they won’t read anything other than PD‘s type C.It’s looks like they’re not quite made for the other types of USB other than type A. They also have a Data out for Jack. This one does not. For this particular meter it’s visual information that you can see real time. If you look closely at the very tiny bottom banner, it shows how much time it took for the particular charging event as well as peak, wattage and voltage. A very interesting little meter. I recommend this USB meter.

This device is great for finding out which chargers and cables charge your devices the fastest. I was able to find out what charger and cable combination charged my Fire tablet at 15W.

This has worked great for my needs. Pros: Easy to read LCD Simple interface Screen rotates 90, 180, 270, 360 degrees LCD has a good refresh rate Value Voltage Amperage and Wattage all seem reasonably accurate. Cons: I am not sure the Watt Hour (Wh) measurement is very accurate. I used a 5Ah M18 battery with a PD100 watt adapter to charge my laptop and when the battery was depleted to where it shut off it was reading 122Wh from a 90Wh battery. This was not just one battery I had 4 M18 batteries, so either they are all under rated or this meter does not have enough resolution to accurately measure Watt Hour.

Works as expected and comes with case to store it easily

So far, I have bought 5 pieces of these gadgets. It's a nice gadget to have for checking the charging conditions of your power banks. However, two pieces have already spoiled, and there is no display after two months of use. The display suddenly goes blank. The reliability is only 60%, and I don't know when the last three will suddenly break down. Very disappointed and might look for another brand. How can I claim the warranty and purchase items that are less than 6 months old?