Gaqqee Digital Voltmeter Ammeter Battery Capacity Tester USB Type-C

Q: What devices can I test with this digital voltmeter and ammeter tester?

The Gaqqee battery capacity tester is compatible with a wide range of USB and Type-C devices, including USB chargers, Type-C chargers, power banks, data cables, laptops, smartphones, and other DC-powered devices operating within DC 4.5–36V and 0–8A. Its automatic fast-charging protocol detection makes it suitable for virtually all modern charging standards.

Q: Can I use the tester overnight without damaging my device?

Yes. The built-in screen-off / sleep mode lets you briefly press the multifunction button to turn off the display while the device continues charging normally. This makes overnight charging both safe and energy-conscious without interrupting the charging session.

Q: What is the difference between the USB, Type-C, and USB + Type-C versions?

The USB-only version measures through a standard USB port; the Type-C version is optimised for USB-C devices; and the combined USB + Type-C version includes both ports simultaneously, where USB input maps to USB output and Type-C input maps to Type-C output. Choose based on the devices you most frequently test.

Q: How do I reset the accumulated capacity data?

Rapidly triple-tap the multifunction button to reset the battery level (mWh) reading and clear the current group's timer back to 0.00. To switch cumulative data storage group numbers (NO.X), hold the button for 2 seconds.

Gaqqee Digital Voltmeter Ammeter Battery Capacity Tester USB Type-C

USB and Type-C Port

$26.89

$26.89 $33.01

Gaqqee Digital Voltmeter Ammeter Battery Capacity Tester USB Type-C

$26.89

$26.89 $33.01

Gaqqee Digital Voltmeter & Ammeter – Battery Capacity Tester with USB & Type-C Ports

Meet the Gaqqee Digital Voltmeter and Ammeter Battery Capacity Tester — a compact, high-precision monitoring tool that puts real-time electrical data right at your fingertips. Whether you're testing chargers, power banks, data cables, laptops, or mobile phones, this versatile inline tester displays all the critical parameters you need on a single vibrant IPS true-colour LCD screen.

Certified CE & RoHS. Made in Mainland China.

Key Features

Multi-parameter simultaneous display: Voltage, current, power, energy consumption, capacity, resistance, elapsed time, capacity group count, and temperature (°C/°F) — all on one screen.
Real-time charging monitoring: Instantly see live voltage and current readings for any connected device.
Screen-off / sleep mode: A single short press deactivates the display while charging continues uninterrupted — perfect for overnight use.
Wide device compatibility: Test USB chargers, Type-C chargers, data cables, power banks, laptops, smartphones, and virtually any USB-C device.
Automatic fast-charging protocol detection: Recognises virtually all major fast-charging standards, making it ideal for multi-device households and tech enthusiasts.
Flexible port options: Available in USB only, Type-C only, or combined USB + Type-C configurations.
Data record & group storage: Log cumulative capacity (up to 99,999 mAh) and energy (up to 99,999 mWh) across multiple stored groups.

Full Specifications

Voltage Measurement Range	DC 4.5 – 36 V
Current Measurement Range	0 – 5 A / 0 – 8 A
Power Measurement Range	0 – 150 W
Capacity Accumulation Range	0 – 99,999 mAh
Energy Accumulation Range	0 – 99,999 mWh
Impedance Measurement Range	1 – 999.9 Ω
Temperature Measurement Range	0 – 80 °C
Timing Duration	Up to 999 hrs 59 mins
Display	IPS True-Colour Digital LCD
Input Ports	5A High-Current USB / Type-C
Output Ports	USB / Type-C
Refresh Rate	>500 ms/cycle (~0.5 cycles/sec)
Self-Consumption Current	<0.02 A
Operating Temperature	-10 to 60 °C
Operating Humidity	10 – 80% RH (non-condensing)
Certifications	CE, RoHS

Dimensions

USB model: 77.6 × 27 × 11 mm
Type-C model: 73.6 × 27 × 11 mm
USB + Type-C model: 76.9 × 38 × 11 mm

Button Operation Guide

Short press: Switch between display screens
Triple short press: Reset battery level (mWh) and clear current group timer
Long press (2 sec): Change cumulative data storage group number (NO.X)

What's in the Box

1 × Digital Voltmeter / Ammeter / Capacity Tester (USB, Type-C, or USB + Type-C — choose your variant)

Frequently Asked Questions

Q: What devices can I test with this digital voltmeter and ammeter tester?

A: The Gaqqee battery capacity tester is compatible with a wide range of USB and Type-C devices, including USB chargers, Type-C chargers, power banks, data cables, laptops, smartphones, and other DC-powered devices operating within DC 4.5–36V and 0–8A. Its automatic fast-charging protocol detection makes it suitable for virtually all modern charging standards.

Q: Can I use the tester overnight without damaging my device?

A: Yes. The built-in screen-off / sleep mode lets you briefly press the multifunction button to turn off the display while the device continues charging normally. This makes overnight charging both safe and energy-conscious without interrupting the charging session.

Q: What is the difference between the USB, Type-C, and USB + Type-C versions?

A: The USB-only version measures through a standard USB port; the Type-C version is optimised for USB-C devices; and the combined USB + Type-C version includes both ports simultaneously, where USB input maps to USB output and Type-C input maps to Type-C output. Choose based on the devices you most frequently test.

Q: How do I reset the accumulated capacity data?

A: Rapidly triple-tap the multifunction button to reset the battery level (mWh) reading and clear the current group's timer back to 0.00. To switch cumulative data storage group numbers (NO.X), hold the button for 2 seconds.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.