Plug this meter in between any USB charging port and whatever device you’re charging. Seeing how much power a port puts out can help you determine how long a device will take to charge or whether your solar panels are oriented for optimum yield.
- Compatible with any USB charging port, including portable solar panels, the PowerPot, home PCs or laptops and any charging accessory you have. Will not interfere with data transfer
- 5 LEDs display power from 1 to 10 watts in 1-watt intervals, covering the entire range of smartphone and tablet charging
- Accuracy: +/- 0.5 watts
- Includes Practical Meter, fast-charging 3-in-1 cable with Apple Dock (iPhone 4, and older), USB Micro B, and USB Mini B
