---
product_id: 49240714
title: "USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget"
brand: "homern"
price: "$0.54"
currency: USD
in_stock: false
reviews_count: 2
url: https://www.desertcart.ec/products/49240714-usb-charger-doctor-in-line-voltage-and-current-meter-detector
store_origin: EC
region: Ecuador
---

# 0-3A current range 10mV/10mA resolution 3-7.5V voltage range USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget

**Brand:** homern
**Price:** $0.54
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Charge smarter, not harder — never settle for slow or faulty again!

## Quick Answers

- **What is this?** USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget by homern
- **How much does it cost?** $0.54 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/49240714-usb-charger-doctor-in-line-voltage-and-current-meter-detector)

## Best For

- homern enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Slim 2.68x0.91x0.47 inch design fits in your tech bag for on-the-go troubleshooting.
- • **No Extra Power Needed:** Self-powered USB inline meter means zero hassle and instant results wherever you plug in.
- • **Precision You Can Trust:** High accuracy with less than 1% voltage and 2% current error ensures reliable diagnostics.
- • **Universal Compatibility:** Works seamlessly with PC USB, home, and car chargers across 3V-7.5V and up to 3A.
- • **Instant USB Power Insight:** Real-time voltage & current readout every 5 seconds keeps you ahead of faulty chargers.

## Overview

The USB Charger Doctor is a compact inline USB voltage and current meter that accurately measures charging performance from 3V to 7.5V and 0 to 3A. Featuring a clear red LED display cycling every 5 seconds, it helps professionals quickly identify weak chargers and cables, ensuring optimal device charging. Lightweight and self-powered, it’s an essential diagnostic tool for tech-savvy users who demand fast, reliable power on the go.

## Description

How many times we seen posts asking "my phone is not charging fast enough" or "I have a bunch of usb cables and old chargers, which one to use"? So how do you find this perfect combo of charger and cables to give you the fastest charging speed? Use our Charger Doctor!!!  The USB Charger Doctor is a small device that goes in series with your usb cable to measure the devices voltage and current consumption.  Within a few minutes you are able to get rid of all faulty phone chargers and cables. What a time saver and problem solver easily one of best diagnostic tools available.  This is a great USB Charger Doctor. Plug it in to any USB port or charger and it automatically tells you what the voltage and charging Amperage is. Great for finding out if your wall charger is any good, needs replaced or how much power a device is drawing. Large LED numbers, without external power supplies  Feature: The display cycles every 5 seconds between amps and volts in a red LED display  Great tool for verifying USB voltage and device charging rate Detect any USB charger such as PC USB, home charger, car charger Widely 3V-8V Voltage and 0A-3A Current Test Range Support with Accurate Readings Extremely Portable, Light Weight, Small Size and Durable, No Extra Cable or Power Supply Needed Specifications Scope of work: Current (0-3A) can detect mobile phone charger voltage compliance DC5V  Working Range: U = 3~7.5V; I = 0~3A Resolution:10mV / 10mA Error Range: voltage <1% current <2%  Full scale drop: (When measuring current) 200mV Operating Temperature: 0-60 Screen size: 0.4inch Dimensions: 2.68x0.91x0.47inch (6.8x2.3x1.2cm) Package: 1 x USB Charger Doctor

## Features

- This little USB Voltage Current Tester has been very useful in ferreting out both weak chargers and poor USB cables by changing cables and chargers systematically and checking the current draw and voltage
- Great Charging Monitor to have in your bag for testing power draw on USB devices.Very handy meter for checking line voltage and current
- The Homern Charger Doctor is a great way to see if your devices and batteries are putting out the voltage and amperes that the producers claim
- It's a goofy little usb digital multimeter. Premium quality, low cost solution for testing out USB battery packs, cables, and chargers
- A Must Have Gadget for DIY Fans and Hi-Tech Lovers to Charging USB interface Electronic Devices Faster.

## Product Details

- **Brand:** Homern
- **Power Source:** Usb Devices
- **Style:** Current Voltage Detection Gadget Tool
- **Color:** Blue
- **Item Weight:** 0.01 Ounces

## Images

![USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget - Image 1](https://m.media-amazon.com/images/I/61iAMcD2XML.jpg)
![USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget - Image 2](https://m.media-amazon.com/images/I/51ZgYAAT4KL.jpg)
![USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget - Image 3](https://m.media-amazon.com/images/I/61UFnEHHUFL.jpg)
![USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget - Image 4](https://m.media-amazon.com/images/I/61Zo7XnkecL.jpg)
![USB Charger Doctor -in-line Voltage and Current Meter Detector Cable Tester Charger Troubleshooting Tool and Gadget - Image 5](https://m.media-amazon.com/images/I/71Lmc-P3D3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Exactly as advertised
  

*by G***O on Reviewed in the United States on January 10, 2018*

Exactly as advertised - does exactly what I want.  Seems to be accurate as well.

### ⭐⭐⭐⭐⭐ 







  
  
    It's also great for finding bad cables
  

*by G***N on Reviewed in the United States on December 22, 2017*

Looking at charging currents tells you if the charging progress is coming along.  No more guessing. It's also great for finding bad cables.

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**Shop now:** [https://www.desertcart.ec/products/49240714-usb-charger-doctor-in-line-voltage-and-current-meter-detector](https://www.desertcart.ec/products/49240714-usb-charger-doctor-in-line-voltage-and-current-meter-detector)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-27*