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The Klein Tools ET910 USB Power Meter and Tester is a compact digital device for precisely measuring electrical parameters of USB-powered equipment. It is ideal for technicians and hobbyists needing to diagnose or monitor USB devices, offering a key benefit of detailed performance insights without needing external accessories. A potential caveat is its USB-A port limitation, meaning it cannot test newer USB-C connections. Key features include voltage and current measurement, capacity and energy tracking, built-in test loads, and the ability to store readings.
| Model Part Number | ET910 |
|---|---|
| Brand | KLEIN TOOLS |
The ET910 is designed specifically for USB-A (Type A) ports. It is not compatible with USB-C, Micro-USB, or other USB connector types.
No, the ET910 is powered directly by the USB port it is connected to, so no external batteries are needed.
The built-in test loads (0.5A, 1A, 2A, 3A) are automatically utilized by the device to simulate different current draws. For specific load testing procedures, consult the product manual.
The ET910 can continuously monitor electrical parameters for up to 1000 hours.
Yes, the ET910 allows you to store and recall up to 10 individual readings for easy reference and comparison.
The meter monitors up to 3A. While it can test chargers and cables for devices that draw up to 3A, it does not limit or boost the power output of the source.
The device calculates resistance based on the measured voltage and current (R = V/I). This value helps understand the load characteristics of the connected USB device.
Ensure the USB-A connector is fully inserted into the power source and the USB device is securely plugged into the meter's output port. Verify the power source is functional.
Check for debris or damage on the USB connectors of the meter, power source, and device. Ensure a stable connection. Test with a known good power source and device.
The built-in loads are activated by the connected device's power draw or specific load selection if applicable (refer to manual for advanced functions). Ensure the device is drawing power.
Ensure the ambient lighting conditions are not excessively bright. The high-resolution LCD is designed for clarity; if it remains unreadable in normal conditions, contact support.
Setup: The ET910 requires no complex setup. Simply plug the male USB-A end into a power source (like a USB charger or power bank) and then plug your USB device into the female USB-A port on the ET910.
Compatibility: This meter is designed for standard USB-A (Type A) ports. It is compatible with devices and chargers that use this connector type, including those supporting Qualcomm Quick Charge® technology. It will not physically connect to USB-C, Micro-USB, or other non-USB-A port types.
Care: To maintain optimal performance, keep the meter clean and dry. Wipe the exterior with a soft, dry cloth. Avoid exposing it to extreme temperatures or moisture. Ensure the USB connectors on both the meter and the devices being tested are free from dirt and debris before connecting to prevent poor connections or damage. The device is powered by the USB port, so no batteries are needed.
