CHARGER Doctor is a popular USB power meter for USB 2.0 ports that can help you check whether your charger delivers the promised amperage, and if you are dealing with USB powered device you can easily measure the power drawn by that device. But we are now in 2017, and USB type C has become more and more popular, and can deliver higher voltages higher than 5V, as well as higher currents. So if you are looking for USB type C power meter, Satechi has you covered.
- Voltage Range – 4V-20V
- Current Range – 50mA-10W
- Max readable Power – 65W
- Indicates power over time (mAh) and current direction (e.g. charger to laptop, or laptop to phone).
- USB 3.1 data pass-through supported
- Dimensions – 6.3 x 2 x 0.8 mm
- Weight – 8.6 g
Beside just measuring power usage, several blogs report this USB-C power meter might be able to help you detect bad cables or power adapters, as people have reported frying equipment in the past, and a USB Type-C Authentication Specification has even been announced last year to work around the issue. I’m not sure how you are supposed to do to test cables/adapters safely, as user reviews indicate the display will only turn on if you are actually charging a device.