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Klein ET910 USB Digital Meter and Tester, USB-A (Type A)

Manufacturer: Klein Tool | Catalog # ET910 | North Coast Part # 1580683

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Usually ships within 11 to 17 days
The Klein Tools ET910 is a USB digital meter and tester combination for most common USB-A ports, including Qualcomm Quick ChargeĀ® ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can also test the maximum current delivery capability of the USB port with built-in fixed loads so user need not connect to an external load. It will function with any USB-A port that has the ability to deliver power. It requires NO batteries as it draws power from the power source to function.

Technical Information

USB Port Voltage, Current, Capacity, Energy, Resistance (Calculated), Max Current
Blade Dimensions
4.31 in L x 2.15 in W x 0.98 in H
3 Amp
Display Type
400 ohms Maximum
Type A
20 Volt

Manufacturer Information

Family Brand Name
Klein Tools

General Product Info

Environmental Conditions
Product UPC
0.175 in


11.21 Inch
0.98 Inch
4.31 Inch
Overall Length
4.31 in
2.130 in

Certifications and Compliance

CA Prop65 Warning
WARNING: Cancer and Reproductive Harm See for more information.
  • 3 to 20V DC; Current: 0.05 to 3A (monitoring mode)
  • Built to withstand a 6.6-Foot (2m) drop
  • Hi-resolution LCD for clear visibility in environments with low ambient lighting
  • Store and recall up to 10 readings
  • Rugged, pocket-sized, and light weight Klein industrial design stands up to jobsite demands
  • Voltage and current overload detection
  • Built-in test loads of 0.5A, 1A, 2A, and 3A; no external test load required
  • Continuously monitor up to 1000 hours of voltage, current, capacity/charge delivered, energy, and resistance (calculated)
  • Durable cable to allow easy access to hard-to-reach ports
  • Tests most common standard USB-A ports, including Qualcomm Quick Charge® ports
  • No batteries needed; powered by the USB port being tested
  • Do NOT use during electrical storms or in wet weather. Do NOT use if meter appears damaged. Use caution when working with voltages above 25V RMS or 24V DC. Such voltages pose a shock hazard.
  • Do NOT use with ports that operate outside of the rated voltage and current. NEVER use on a circuit with voltage or current that exceeds the maximums specified for this device.
  • This meter will NOT display current below 50 milliamperes, even if it is allowing this to pass through. NOTE: The display will show zero current.
  • To ensure safe operation and service of this meter, follow all instructions. Failure to observe warnings can result in severe injury or death.