The Klein Tools ET910 is a USB digital meter and tester combination for most common USB-A ports, including Qualcomm Quick Charge® 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.

• 3 to 20V DC; Current: 0.05 to 3A (monitoring mode).
• 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).
• Tests most common standard USB-A ports, including Qualcomm Quick Charge® ports.
• Store and recall up to 10 readings.
• Voltage and current overload detection.
• Hi-resolution LCD for clear visibility in environments with low ambient lighting.
• Durable cable to allow easy access to hard-to-reach ports.
• Rugged, pocket-sized, and light weight Klein industrial design stands up to jobsite demands.
• Built to withstand a 6.6-Foot (2m) drop.
• No batteries needed; powered by the USB port being tested.