240W USB C Adapter Power Meter Tester (2 Pack) - Wattage, Voltage, Amperage LED Digital Display, Type C Male to Female Extension Connector for iPhone 15/16, MacBook, iPad & More USB-C Cables/Devices

Very nice, simple unit to debug power consumption. Small, works well, and seems decently built. I used this to debug power issues with a Macbook, though see that it works for any USB PD device. It allowed me to discover that not all USB C laptop chargers are PD.

The LED display is clear and easy to read, even at a quick glance. I haven’t had a single issue with it—it just works exactly as expected. If you need a reliable way to monitor your power output, this is a great tool to have on hand.

They work fine, with readings differing by 0.1V. I guess that's OK for the price. Voltage drop down to 4.5V when I put a flash drive in the output, feeding it with another powered hub, but maybe that's normal. Haven't tried that test using another, more expensive, tester I bought. The flash drive worked fine, but the specs for USB are +/- 5%, meaning it shouldn't go lower than 4.75V. I wouldn't buy this as a primary tester, but as a backup they are tiny and cute and work.

The media could not be loaded. I wanted to test all of my USB cables and figure out which ones were holding back the performance I needed.I simply wanted to check voltages for charging, not data, or videoHere’s my experience:After using this tool for a couple of months, I was pleasantly surprised. It has a super small form factor, feels well-built, and has proven to be accurate. I've tested many cables and I'm happy to report that it hasn’t limited power throughput at all.🔬 Testing ParametersDevice: USB tester connected to several cablesPower Source: Ecoflow Delta Pro 3 (4500Wh battery backup)Scenario: Previously measured about 95W charging output to a laptop from the Ecoflow panelPROS:✅ Super small and portable: Easy to carry and use anywhere✅ Very bright display: Easy to read in most lighting conditions✅ Scrolls through key metrics: Voltage, wattage, and amperage✅ Solid connectors: Good physical build quality✅ Minimal impedance: No noticeable restriction on power flowCONS:❌ Fast scrolling: Data points cycle quickly, making it hard to catch one metric for very long🔎 CONCLUSIONI would highly recommend this tester if you're looking for simple measurements of power throughput. After plugging the same cable into this inline tester, I saw similar wattages as without it (as shown in the video and pictures). Honestly, I was expecting more impedance at higher wattages, but even after leaving the tester in place for a while, there was no noticeable temperature rise or performance drop.This has earned a place in my laptop bag!

These are my favorite. They alternate between volts, amps, and watts while most just show watts. This is helpful diagnosing charger capabilities. Nice, bright display. Works up to 240 watts.

I recently got my hands on this excellent USB-C voltage meter tester adapter, and it's been incredibly useful. The Power Digital LED Display Design makes monitoring wattage a breeze, ensuring my devices are always in good shape. The 240W PD Fast Charging & 40 Gbps Data Transfer guarantees my MacBook and other USB-C devices are always powered up and running smoothly. The Universal Compatibility is impressive, working seamlessly with my iPhone 15. However, I've noticed a slight misalignment with some of my more expensive devices, occasionally showing a mismatch of greater than 5 watts. Overall, this 2-pack USB-C tester power meter adapter has it's uses for a quick cheap way to see how much power your device is consuming but don't lean on its accuracy too heavily. I would recommend if you need a quick cheap way to visualize charging speeds.

Wasn't expecting much from this at this price but seems to be fairly accurate compared to my higher watt tester. Pretty cool to have around when you're unsure what cable you have or how much it's charging through your cable.

Works great, accurate.