🔍 Discover the Power of Precision!
The JacobsParts USB Power Meter is a cutting-edge device designed to measure USB charging voltage, current, and discharge capacity. With a voltage range of 4-20V and a maximum current of 3A, it provides precise readings with a resolution of 0.01V and 0.01A. Its compact design makes it perfect for testing various chargers and cables, ensuring you never miss a beat in your charging performance.
G**E
A Neat & Nifty Little USB Gadget
Well I couldn't figure out what the dickens was happening to my portable USB hard drive as it kept turning itself off while I was using it ~ So I started looking for some way of monitoring the current to see if it was drawing more than my USB was putting out. And I found out with this device it WAS overloading my little 2 amp USB receptacle. Since then I've used it for all kinds of USB accoutrements so I can monitor them for excessive power usage plus just for my own 'enlightenment'. It's a cool gadget to have and will tell you much about all the stuff you are plugging into your USB outputs.
D**J
Easy to see LED display.
Great for testing old laptop USB ports and USB cables.
P**.
Not particularly accurate as an ammeter
The thing happily shows multiple Bluetooth and Logitech unifying recievers as using no amps at all (which is nonsense since they were actively in use), so maybe it should only be considered accurate to tenths of an amp. Other than that the display is at least very easy to read, and the one-button it has doesn't take much thinking to figure out.
J**Y
Very accurate
It shows the voltage accurately. Easy to use.
K**N
does everything I need
thank you
A**R
A very good little usb power monitor
I purchased these before along with some other metering type monitors and was impressed when checking and comparing accuracy compared to my trusty Fluke meter that they registered less than one percent error, 99.2% (or minus 0.8% error) and was so impressed I wanted a couple more and when I checked out my most recent purchase found they registered 99.6% (-0.4% error). That is close enough for me. Whenever I'm in the market for anything monitoring related, they are going to be first choice. Outstanding product in my opinion.
J**I
Fun info
It's fun to see so much info about charging things. Works great!
R**H
Large clear display of voltage, current and time.
Excellent little product! I'm using it to check charging rate to my cell phones and portable battery packs. Reads perfectly with both standard and high speed chargers. Only limitation is the single USB output which could complicate measurements when trying the measure with multiple devices connected. Not an issue for me. Highly recommended.
Trustpilot
2 weeks ago
2 months ago