Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Power Supply Testers
I was curious if certain chargers and cords really did charge faster, or if it just seemed so. And this meter makes it easy to measure what's really going on. And yes, in my case, there was a big difference between between not just the chargers, but also the cords. Some cords appear to limit the current, even if the charger is capable of putting out more. It's also nice being able to see the voltage and current at the same time. I've been using it a few weeks now with no problems.
Verified purchase: Yes | Condition: New
This product came with no manual. The connector is upside down relative to the display (so you end up twisting the cord 180 degrees). There are two output ports, but they don't seem to be the same. Of the devices I tried to charge through them, it seems Output 1 has a higher charge current than Output 2. The readings can differ by as much as 0.05 (both current and voltage) from other similar USB voltage/current meters. Despite these things, still a good tool to test out USB charger claims, as many eBay USB chargers don't support the current they claim to support.
Verified purchase: Yes | Condition: New
Without this device, you are really in the dark when trying to troubleshoot a faulty cable, phone connector or power supply. Now you know exactly what is going on. You conveniently get a reading of voltage and current. I wish I had bought one of these sooner.
Verified purchase: Yes | Condition: New
This tester helped me sort out my collection of charging cables. Same 2 amp charger, same phone, totally different results on a few of my cables. Turns out all the slow-charging cables were generic no-name - no surprise, right? This tester will light-up and show voltage without any device plugged in, so that gives some idea of the voltage drop when a load is connected. A good charger will not drop in voltage too much. My Samsung charger drops from 5.01 down to 4.95 at full output of 1.45 amps. Funny that this 2 amp rated charger is only putting out that much...so I cut up a spare USB extension cable to connect my Fluke amp meter inline on the power wire inside. It showed pretty much the same amperage, so I'm not worried about how accurate this tester is. Then I bought a Qualcom certified QC2.0 car charger and with this tester I can see 9 volts with my Nexus 6. It might be nicer to have the USB socket on the end & skip having a 2nd socket, so the cable lies flat in my kit bag, but just unplugging everything solves that. Definitely worth havingRead full review
Verified purchase: Yes | Condition: New
Pretty simple to use, works great. I purchased to monitor the output of my portable solar panels.
Verified purchase: Yes | Condition: New