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The Klein Tools ET900 USB Power Meter is a compact, battery-free digital meter designed for professional-grade monitoring of USB-A ports, including Qualcomm Quick Charge. It measures voltage (3-20V), current (0.05-3A), capacity, energy, and resistance with a high-resolution LCD display, stores up to 10 readings, and features a durable cable for easy access to tight spaces. Built with Klein Tools’ legacy of quality and reliability, it’s engineered for professionals demanding precise USB power diagnostics.






| Brand | KLEIN TOOLS |
| Power Source | Powered By Usb |
| Style | USB-A Meter |
| Colour | Multi |
| Item Weight | 32 g |
| Item dimensions L x W x H | 21.2 x 3.2 x 1.4 Centimeters |
| Min. Operating Voltage | 3 |
| Specification Met | Likely Meets Various Industry Standards and Certifications, Including Fcc, Ce, and Ul |
| Upper Temperature Rating | 85 Degrees Celsius |
| Measurement Type | Voltmeter, Ammeter, Ohmmeter |
| UPC | 092644691386 |
| Manufacturer | Klein Tools |
| Global Trade Identification Number | 00092644691386 |
| Model | ET900 |
| Model Name | Klein Tools - 86522 |
| Product Dimensions | 21.21 x 3.23 x 1.4 cm; 31.75 g |
| Item model number | ET900 |
| Special Features | Klein Tools' Most Compact USB Meter |
| Mounting Hardware | Klein Tools - 86522 |
| Number of items | 1 |
| Display Type | LCD |
| Batteries Included | No |
| Batteries Required | No |
| Material | Polymer |
| Does it contain liquid? | No |
| Item Weight | 31.8 g |