Make a Portable Load Testing Device | Digital Volt-Amp Meter | Charging | Full Working Demonstration

In this video, I build and demonstrate a portable load testing device featuring a digital volt-amp meter, rechargeable battery system, USB Type-C charging, and multiple protection features for safe and reliable operation.

This compact tester allows you to monitor both voltage and current in real time, making it useful for testing electronic loads, battery-powered circuits, LED projects, DC devices, and DIY electronics applications.

Features

✔ Real-Time Voltage Display
✔ Real-Time Current Display
✔ USB Type-C Charging Support
✔ Rechargeable 18650 Li-ion Battery
✔ 1S BMS Battery Protection
✔ Reverse Current Protection Circuit
✔ Red LED Charging/Power Indicator
✔ ON/OFF Power Switch
✔ Portable and Compact Design
✔ Safe and Reliable Operation

Components Used

18650 Li-ion Cell
1S BMS Protection Module
TP4056 Type-C Charging Module
Digital Volt-Amp Meter
Reverse Current Protection Diode
Red LED Indicator
Current Limiting Resistor
ON/OFF Switch
Connecting Wires

In This Video

• Circuit Diagram Overview
• Component Explanation
• Wiring and Connections
• USB-C Charging Setup
• Voltage & Current Meter Testing
• Protection Circuit Demonstration
• Full Functionality Check
• Practical Load Testing Demo

This DIY project is perfect for electronics enthusiasts, makers, students, and hobbyists looking to build a portable testing tool with charging and protection features.

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Видео Make a Portable Load Testing Device | Digital Volt-Amp Meter | Charging | Full Working Demonstration канала Musa Electronics Store