15+ In-Stock & Ships within the hour! 
Ever wanted to know how much juice your USB devices really require? Or why you smartphone chargers quicker using one charger, when compared to another? This Advanced USB Output Meter measures and displays simultaneously the amps, volts and milliamp / hour (mAh) as they flow through your USB charging loop (from power source to gadget) - allowing you a real-time look at USB throughput performance and charging speed.
USB Voltage, Amps and mAh (Milli-amp per Hour) all measured and displayed at the same time - the ultimate USB diagnostics tool!
Ever wondered which one of your many USB cables can handle the most power for charging? Ever doubted the power output of your wall charger or power bank? The Advance USB Output Meter is the tool to show you just how much juice is flowing through your cables.
Simply plug it into your USB power source, then continue to connect up your phone, tablet or other USB-powered device. As soon as power is flowing, it will show you the Volts (V), Amps (A), Milliamps per Hour (mAh) and the Time Elapsed (T) simultaneously on the easy-to-read LCD display. The higher the numbers, the more power is flowing, and the faster your charging is.
Note: Because of the way power flows, you won't always get peak throughput. Factors like the power level of the battery being charged, the construction/length of the cable being used and the safety features of the USB power source can all impact the power flow from moment to moment. Don't be shocked when the readings are low. Additionally, you will need to have a device connected to view Amps and mAh readings, as this is also dependant on the power draw from your device.
Accuracy: This simple measurement gadget is no substitute for proper electronic measuring devices - accuracy isn't at lab testing levels. We find that it's good at identifying issues with USB cables and for comparing the charging potential of your various devices in a home or office situation - however due to losses of power transfer efficiency with the use of a power meter and a USB cable, don't expect to acheive the theoretical potential claims of your components.
