---
product_id: 71879138
title: "Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance"
brand: "klein tools"
price: "₩29496"
currency: KRW
in_stock: false
reviews_count: 13
url: https://www.desertcart.kr/products/71879138-klein-tools-et900-usb-power-meter-usb-a-digital-meter
store_origin: KR
region: South Korea
---

# 3-20V DC voltage range Stores & recalls 10 readings Measures capacity & energy up to 1000 hrs Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance

**Brand:** klein tools
**Price:** ₩29496
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Empower Your USB Power IQ — Never Miss a Watt!

## Quick Answers

- **What is this?** Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance by klein tools
- **How much does it cost?** ₩29496 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/71879138-klein-tools-et900-usb-power-meter-usb-a-digital-meter)

## Best For

- klein tools enthusiasts

## Why This Product

- Trusted klein tools brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety-First Design:** Voltage and current overload detection protects your devices and gear from unexpected power surges.
- • **Data at Your Fingertips:** Store and recall up to 10 readings to track performance trends and avoid guesswork in your tech setup.
- • **Built for Real-World Use:** Durable cable and hi-res LCD ensure clear visibility and easy access even in low-light or tight spaces.
- • **Precision Power Insights:** Continuously monitor voltage, current, capacity, energy, and resistance with high accuracy for smarter device diagnostics.
- • **Universal USB-A Compatibility:** Tests all standard USB-A ports including Qualcomm Quick Charge for versatile, on-the-go power analysis.

## Overview

The Klein Tools ET900 USB Power Meter is a professional-grade digital tester designed for USB-A ports, capable of measuring voltage (3-20V DC), current (0.05-3A), capacity, energy, and resistance with continuous monitoring up to 1000 hours. Featuring a high-resolution LCD, durable cable, and the ability to store 10 readings, it supports Qualcomm Quick Charge ports and includes overload detection for enhanced safety. Ideal for tech-savvy professionals seeking precise, reliable USB power diagnostics.

## Description

These Double-Fluted Step Drill Bits provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes. Thick 3/8-Inch hex shank provides a firm, positive grip and won't spin out in the drill. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Review: Versatile USB Power Meter: Accurate Measurements with Enhanced Features, but with One Minor Quirk - This USB power meter is very versatile, allowing me to test voltage and current in USB connections. It can measure voltage from 3 to 20V DC and current from 0.05 to 3A (USB-A) or 0.05 to 5A (USB-C). This wide range covers most standard USB ports, including Qualcomm Quick Charge ports. With it, I can measure and display important information such as USB port voltage, current, capacity, energy, and resistance, providing valuable insight into my USB power usage on various devices. My only minor gripe is that the meter instantly shuts off after a low current draw or power cycle, rather than retaining the data. It would be more convenient if it saved the last reading for a short period. It's important to note that USB Type-C connections operate with efficiency and safety in mind, meaning that the charger will only supply power when it detects a device connected to the other end. If no device is connected, the power meter will not power up as it doesn't receive any power from the charger. This feature prevents unnecessary power wastage and reduces potential electrical hazards. --- Product: Klein Tools ET920 USB Power Meter, USB-A and USB-C Digital Meter for Voltage, Current, Capacity, Energy and Resistance ASIN: B07GXZHPVR
Review: Well built (Vietnam) and accurate tool - One of the better USB testers on the market

## Features

- 3 to 20V DC; Current: 0.05 to 3A
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FMHHS43 |
| Best Sellers Rank | #13,027 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Industrial Power Meters |
| Brand | KLEIN TOOLS |
| Color | orange |
| Date First Available | July 16, 2018 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00092644691386 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.12 ounces |
| Item dimensions L x W x H | 8.35 x 1.27 x 0.55 inches |
| Item model number | ET900 |
| Manufacturer | Klein Tools |
| Measurement Type | Voltmeter, Ammeter, Ohmmeter |
| Min. Operating Voltage | 3 |
| Power Source | Powered By Usb |
| Product Dimensions | 8.35 x 1.27 x 0.55 inches |
| Specification Met | Likely Meets Various Industry Standards and Certifications, Including Fcc, Ce, and Ul |
| Style | USB-A Meter |
| UPC | 092644691386 |
| Upper Temperature Rating | 85 Degrees Celsius |

## Product Details

- **Brand:** KLEIN TOOLS
- **Color:** orange
- **Item Weight:** 1.12 ounces
- **Power Source:** Powered By Usb
- **Style:** USB-A Meter

## Images

![Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance - Image 1](https://m.media-amazon.com/images/I/317Mz9UawxL.jpg)
![Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance - Image 2](https://m.media-amazon.com/images/I/31VUZA425VL.jpg)
![Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance - Image 3](https://m.media-amazon.com/images/I/41Awo9PCLqL.jpg)
![Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance - Image 4](https://m.media-amazon.com/images/I/41DWaSee8YL.jpg)
![Klein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance - Image 5](https://m.media-amazon.com/images/I/41rGgqBYA6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Versatile USB Power Meter: Accurate Measurements with Enhanced Features, but with One Minor Quirk
*by S***R on October 19, 2023*

This USB power meter is very versatile, allowing me to test voltage and current in USB connections. It can measure voltage from 3 to 20V DC and current from 0.05 to 3A (USB-A) or 0.05 to 5A (USB-C). This wide range covers most standard USB ports, including Qualcomm Quick Charge ports. With it, I can measure and display important information such as USB port voltage, current, capacity, energy, and resistance, providing valuable insight into my USB power usage on various devices. My only minor gripe is that the meter instantly shuts off after a low current draw or power cycle, rather than retaining the data. It would be more convenient if it saved the last reading for a short period. It's important to note that USB Type-C connections operate with efficiency and safety in mind, meaning that the charger will only supply power when it detects a device connected to the other end. If no device is connected, the power meter will not power up as it doesn't receive any power from the charger. This feature prevents unnecessary power wastage and reduces potential electrical hazards. --- Product: Klein Tools ET920 USB Power Meter, USB-A and USB-C Digital Meter for Voltage, Current, Capacity, Energy and Resistance ASIN: B07GXZHPVR

### ⭐⭐⭐⭐⭐ Well built (Vietnam) and accurate tool
*by S***M on January 8, 2026*

One of the better USB testers on the market

### ⭐⭐⭐⭐ Pretty good little device.
*by P***R on December 11, 2025*

Works well and useful for testing all mobile devices and charging sockets/cables. Happy with this unit, but I do use lots of mobile devices and recharge gear, and testing optimum recharging solutions is important to me. Not for everyone.

## Frequently Bought Together

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-22*