All-in-One USB Power Analyzer with OLED Display

Easily monitor and analyze USB power data with the Portable Professional USB Power Analyzer from Soho Emporium. This advanced analyzer provides real-time readings of voltage, current, capacity, energy, temperature, and timing — all on a clear OLED display. Whether you're testing power banks, chargers, USB cables, or mobile devices, this tool helps you optimize performance and protect your gear.

🔍 Features:

• Multi-Function Display: Tracks voltage (V), current (A), energy (Wh), capacity (mAh), time (H), and temperature (°C).
• Real-Time Monitoring: Easily view current power draw, charging data, and accumulated usage statistics.
• Reset & Alert System: One-click reset for individual data points; built-in alert for overvoltage or overload protection.
• USB Compatibility: Works with laptops, desktops, car chargers, wall adapters, mobile power banks, and USB devices.
• Time-Off Control: Includes countdown timer (0–24 hrs) to cut off output automatically — ideal for controlled charging cycles.
• OLED Display: Bright, energy-efficient screen with clear layout for data visibility at a glance.

👨🔧 Perfect For:

• Tech enthusiasts and DIY electronics hobbyists
• Quality control professionals testing chargers, cables, or power banks
• Anyone wanting to monitor USB device performance or protect from overcharge

📐 Specifications:

• Model: J7-b/c/d
• Supply Voltage: DC 3V–25V
• Measuring Range: DC 3V–25V
• Accuracy Class: 1%
• Display Type: Analog and Digital
• Dimensions: 75 × 43 × 8 mm
• Operating Temperature: -10°C ~ +60°C
• Battery Included: No
• Certification: CE, RoHS

🔧 How It Works – Step-by-Step Overview

1. Test Voltage, Current, Capacity, and Time

Connect the USB power source (like a laptop or charger) to the input port, and connect the USB device (like a mobile phone or USB load) to the output port. The analyzer will instantly display real-time data such as voltage (V), current (A), capacity (mAh), energy (Wh), temperature (°C), and time (H) on the OLED screen.

2. Test Power Bank Capacity

Fully charge the power bank, then connect it to the analyzer and let it discharge completely into a USB load. The analyzer will display the total discharged capacity (mAh), which reflects the actual usable power. For accurate results, multiply the 5V value by ~1.35 to account for conversion losses.

3. Test Maximum Output Current of Chargers

Connect the charger to the analyzer and use a fixed resistor or USB load (e.g., 1A/2A/3A). Monitor current stability and temperature over time. If output fluctuates or overheats, the charger may be overrated or unsafe.

4. Test Charging Cable Quality

Connect the power source and USB load through different charging cables using the analyzer. Cables with lower voltage drop and higher current readings are better quality. This helps identify fast-charging or high-resistance cables.

Want to visualize it instead? View our Step-by-Step Infographic .

🔧 How It Works Overview

📦 What's in the Box:

• 1 × USB Power Analyzer
• User Guide (on-device instructions and visual display)

Why Choose This Analyzer?
With built-in memory, customizable resets, and automatic cut-off, this tool doesn’t just display data — it protects your USB devices and optimizes performance with precision insights.=