The Practical Meter will tell you truth about all your USB chargers. From the makers of The PowerPot, the Practical Meter displays real-time charge rates of any USB device so you know how fast you’re charging. Slow and inconsistent charging rates is the result of different standards for high-powered USBs. You may be accustomed to getting a full charge from the wall outlet in a couple hours, but the same charge may take up to six hours in your car. The Practical Meter is especially beneficial when you’re outdoors charging your device from solar or non-standard power supply. In some cases you may actually be draining your device battery instead of charging. Support the Kickstarter campaign and pre-order yours here.