Mini USB Power Tester – Digital Voltmeter & Ammeter

$10.39 $12.26

BS Smart Digital USB Power Charging Tester – Voltmeter & Ammeter in One

Get instant, accurate readings of your USB charger's voltage and current with this compact BS Smart Digital Mobile Power Charging Tester. Designed for hobbyists, electronics enthusiasts, and anyone who wants to verify their charger or power bank is performing correctly, this mini tester plugs directly into any standard USB port for real-time monitoring — no extra cables or setup required.

Key Features

Dual Measurement: Simultaneously reads voltage (V) and current (A) via built-in voltmeter and ammeter functions.
Wide Voltage Range: Supports supply voltages from 3.5V to 7V — compatible with most standard USB chargers and power banks.
Ultra-Low Power Draw: Operates on just 20mA working current, so it won't skew your readings.
Compact & Portable: Mini DIP form factor fits easily in a pocket, tool bag, or desk drawer.
Easy to Read Display: Clear digital readout lets you check charging status at a glance.
Wide Operating Temperature: Functions reliably from -10°C to +65°C for indoor and outdoor use.
No High-Concern Chemicals: Free from hazardous substances for safe everyday handling.

Specifications

Supply Voltage: 3.5V – 7V
Working Current: 20mA
Operating Temperature: -10°C to +65°C
Package Type: DIP
Quantity: 1 unit
Condition: New
Made in Mainland China

Who Is This For?

Whether you're testing a phone charger, checking a portable power bank's output, or diagnosing USB-powered devices, this tester gives you the data you need quickly and accurately. It's an essential addition to any electronics toolkit alongside other handy diagnostic tools.

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Frequently Asked Questions

Q: What does the BS Smart USB Power Charging Tester measure?

A: The tester measures both voltage (V) and current (A) from a USB power source simultaneously. It functions as a voltmeter and ammeter, giving you a real-time digital readout of your charger or power bank's output performance.

Q: What USB devices is this tester compatible with?

A: This USB charging tester is compatible with standard USB chargers, power banks, and other USB-powered devices operating within the 3.5V to 7V supply voltage range — which covers the vast majority of everyday USB chargers and mobile power sources.

Q: Is the USB power tester difficult to use?

A: Not at all! Simply plug the tester into your USB port or charger, and the digital display immediately shows voltage and current readings. No additional setup, wiring, or software is needed — it's truly plug-and-read convenience.