0–40V LCD Voltmeter Ammeter – Fast Charge & Ripple Tester
0–40V LCD Voltmeter Ammeter – Fast Charge & Ripple Tester
0–40V LCD Digital Voltmeter Ammeter | Fast Charge Detection & Ripple Measurement Tester
Get precise, real-time electrical measurements with this compact yet powerful 0–40V Digital Voltmeter Ammeter Tester. Whether you're testing USB-C fast charging protocols, monitoring battery capacity, or measuring voltage ripple, this all-in-one instrument delivers accurate readings on a crisp IPS high-definition LCD display. Its rugged metal shell and drop-proof construction make it ideal for workbenches, field use, and DIY electronics projects alike.
Made in Mainland China.
Key Features
- Durable Metal Shell: Drop-proof construction with an IPS HD screen for clear, real-time charging power readings in any lighting condition.
- 3-Page Display: Cycle through three information screens with a single button press for comprehensive data at a glance.
- Multi-Function Protocol Support: Full protocol compatibility including curve measurement, ripple measurement, and automated PD (Power Delivery) protocol testing.
- Type-C Current & Voltage Testing: Purpose-built for modern USB-C fast-charge trigger testing — quickly verify charger output and device compatibility.
- Wide Measurement Range: Handles voltages from 3.3V to 40V and currents up to 12A, covering virtually all USB chargers, power banks, and DC sources.
- High Sampling Rate: 2–5 MHz sampling rate captures transient ripple events that slower meters miss.
- Temperature Monitoring: Built-in temperature measurement from 0–99°C for thermal awareness during charge testing.
Technical Specifications
| Absolute Withstand Voltage | 0–40V |
| Absolute Current | 0–16A |
| Absolute Power | 0–380W |
| Measurement Voltage | 3.3–40V (typical: 4–30V) |
| Measurement Current | 0–12A |
| Measurement Power | 280W |
| Temperature Range | 0–99°C |
| Sampling Rate | 2–5 MHz |
| Dimensions | 54.96 × 24.45 × 11.15 mm |
| Material | Metal |
| Color | Black |
| Battery Included | No |
What's in the Box
- 1× Digital Voltmeter Ammeter Tester
Important Notes
- Actual product color may vary slightly from images due to monitor brightness and lighting conditions.
- Please allow minor measurement deviation due to manual calibration tolerances.
You Might Also Like
- Electromagnetic Induction Tester – Coil & Circuit Fault Detector
- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: What charging protocols does this voltmeter ammeter tester support?
A: This tester supports a full range of USB fast-charge protocols, including automated PD (Power Delivery) detection and single-bait PD trigger testing. It is designed for USB-C connections and can identify and test most modern fast-charge standards used by smartphones, laptops, and power banks.
Q: Can I use this tester to check battery capacity and ripple?
A: Yes. The tester includes dedicated measurement modes for battery capacity monitoring and voltage ripple detection. Its 2–5 MHz sampling rate makes it capable of capturing ripple waveforms that standard multimeters would miss, giving you a more complete picture of your power source's output quality.
Q: Is this tester suitable for DIY electronics projects?
A: Absolutely. Its compact size (54.96 × 24.45 × 11.15 mm), metal drop-proof shell, and wide voltage range (3.3–40V) make it an excellent bench tool for electronics hobbyists, engineers, and technicians who need reliable voltage, current, power, temperature, and ripple measurements in one device.