Klein Tools USB Digital Meter ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$120.70
$118.20
Klein Tools ET910 USB Digital Meter and Tester, USB-A (Type A)

Klein Tools USB Digital Meter and Tester USB-A Type A 3-20V DC with Built-in Test Loads

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Model: ET910
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$120.70
$118.20
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Klein Tools USB Digital Meter and Tester USB-A Type A 3-20V DC with Built-in Test Loads

Professional USB port testing and monitoring solution

The Klein Tools USB Digital Meter and Tester delivers comprehensive USB-A port testing capabilities with 3-20V DC voltage range and 0.05-3A current monitoring. This rugged polymer construction meter features built-in test loads of 0.5A, 1A, 2A, and 3A, eliminating the need for external test equipment while providing continuous monitoring up to 1000 hours of voltage, current, capacity, energy, and calculated resistance.

Professional Features & Benefits

  • Built-in Test Loads (0.5A, 1A, 2A, 3A): Eliminates external test equipment requirements for comprehensive USB port load testing and validation.
  • 3-20V DC Voltage Range with �1% Accuracy: Provides precise measurements across standard and Quick Charge� USB-A port specifications.
  • 6.6-Foot Drop Protection: Rugged polymer construction withstands jobsite conditions and accidental drops for reliable field performance.
  • 1000-Hour Continuous Monitoring: Extended monitoring capability tracks voltage, current, capacity, energy, and resistance over time for thorough analysis.
  • No External Power Required: Self-powered design draws power from the USB port being tested for convenient operation.
  • Hi-Resolution LCD Display: Clear visibility in low ambient lighting conditions ensures accurate readings in various work environments.
  • 10-Reading Memory Storage: Store and recall measurement data for comparison and documentation purposes.

Technical Specifications

  • Accuracy: Voltage - 3 to 20V DC +/- 1% (+/-2 Bytes); Current - 0.05 to 3A +/- 1% (+/-2 Bytes)
  • Capacity Used: 99,999mAh Maximum
  • Current: 0.05 to 3A
  • Department: Electrical
  • Display: LCD
  • Drop Protection: 2 m (6.6')
  • Elapsed Time: Up to 999 Hours, 59 Min, 59 Secs
  • Energy Delivered: 999Wh Maximum
  • Ingress Protection: IP20
  • Item Depth: 11.2100 in
  • Item Height: 0.9800 in
  • Item Weight: 0.1750 lbs
  • Item Width: 2.1300 in
  • Material: Polymer
  • Overall Height: 0.98" (2.5 cm)
  • Overall Length: 4.31" (11 cm)
  • Overall Width: 2.15" (5.5 cm)
  • Product Details: USB-A (Type A)
  • Product Group: Tool Sets
  • Product Subgroup: Tool Kits
  • Product Type: USB-A (Type A)
  • Product Voltage: 3 to 20V DC
  • Resistance: 400 ohms Maximum
  • Usb Compatibility: USB-A; Qualcomm Quick Charge� Compatible
  • Weight: 2.80 oz (79.4 g)

Professional Applications

  • USB Port Testing and Validation
  • Mobile Device Charging System Analysis
  • Power Bank and Charger Performance Testing
  • Quick Charge� Port Verification
  • Field Service and Maintenance Operations
  • Quality Control and Compliance Testing
  • Electrical Troubleshooting and Diagnostics

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade testing equipment with IP20 ingress protection and 6.6-foot drop protection for reliable jobsite performance. The rugged polymer construction and compact design ensure durability while maintaining the precision accuracy required for professional USB port testing and monitoring applications.

Manufacturer Resources

Spec Sheet

Product Specs

Capacity Used:
99,999mAh Maximum
Current:
0.05 to 3A
Display:
LCD
Drop Protection:
2 m (6.6')
Elapsed Time:
Up to 999 Hours, 59 Min, 59 Secs
Energy Delivered:
999Wh Maximum
Ingress Protection:
IP20
Item Depth:
11.2100 in
Item Height:
0.9800 in
Item Weight:
0.1750 lbs
Item Width:
2.1300 in
Overall Height:
0.98" (2.5 cm)
Overall Length:
4.31" (11 cm)
Overall Width:
2.15" (5.5 cm)
Resistance:
400 ohms Maximum
Usb Compatibility:
USB-A; Qualcomm Quick Charge® Compatible
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Multimeters
Product Type:
USB Meter
Product Voltage:
3 to 20V DC
Product Details:
USB-A (Type A)
Product Material:
Polymer
Product Weight:
2.80 oz (79.4 g)
Product Depth:
11.21 in
Product Width:
2.13 in
Product Height:
0.98 in

Klein Tools ET910 – Frequently Asked Questions

1) Will the Klein Tools ET910 USB meter test a USB-C port or charger?
No. The ET910 is a USB-A (Type A) device only, so it plugs into a standard rectangular USB-A port. Testing a USB-C output would require a USB-C tester or an adapter, and the meter's stated compatibility covers USB-A and Qualcomm Quick Charge ports.
2) Can the ET910 USB tester load test a charging port without extra equipment?
Yes, it has built-in test loads at 0.5A, 1A, 2A and 3A, so you can pull a real load on a port and watch what the voltage does without carrying a separate load bank or dummy load.
3) What voltage and current range does the Klein ET910 USB meter measure, and how accurate is it?
Voltage reads 3 to 20V DC and current reads 0.05 to 3A, each to +/- 1% (+/- 2 bytes). The 20V top end covers Quick Charge negotiated voltages, not just the 5V a plain USB port puts out.
4) Does the ET910 need its own battery or power supply?
No separate power source. The meter draws what it needs from the USB port under test, so you plug it in and it reads. Nothing to charge before a service call.
5) Can I leave the ET910 inline to log a long charging cycle?
Yes. It tracks elapsed time up to 999 hours, 59 minutes, 59 seconds while logging voltage, current, capacity and energy. Capacity tops out at 99,999mAh and energy at 999Wh, which is well past any single phone or power bank cycle, so it works for overnight or multi-day runs on a charging cart or kiosk.
6) Is the Klein ET910 rugged enough to live in a tool pouch on a jobsite?
It is polymer bodied and rated for a 2 m (6.6 ft) drop, and it weighs 2.80 oz (79.4 g), so it pouches easily. Ingress protection is IP20, meaning no water or dust protection to speak of, so keep it dry and out of the weather.
7) Can I use the ET910 to prove a wall charger or power bank is delivering what it claims?
That is what the built-in loads are for. Apply a known 1A, 2A or 3A draw and read the voltage and current the source actually holds, then compare against the label. Calculated resistance reads up to 400 ohms, and ten readings can be stored and recalled for documentation.
8) How big is the ET910 USB tester, and will it block the neighboring port on a strip?
Overall it measures 4.31 in long, 2.15 in wide and 0.98 in tall. That width is wider than a single USB-A jack, so on a tightly spaced multi-port charger or power strip it can cover the adjacent outlet while plugged in.
9) Is the Klein ET910 model number what I order, and is it sold on its own?
The part number is ET910 from Klein Tools, a single model with no finish or size options. It ships as the meter itself, a plug-in inline device with an LCD readout.
How fast can I get the Klein Tools ET910 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools ET910 come with a warranty?
Absolutely. The Klein Tools ET910 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools ET910?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools ET910 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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