USB Tester Type-C PD Digital Capacity Meter — Voltage, Current & Power Measurement

Know Exactly What Your Charger Is Delivering

The USB Tester Type-C PD Digital Capacity Meter is the essential tool for anyone who takes charging seriously. Plug it inline between your charger and device, and instantly see real-time voltage, current, wattage, and accumulated capacity on the digital display. Verify that your fast charger is actually fast charging. Test your power bank's real capacity. Diagnose slow charging cables. This compact inline tester gives you the data you need to know what's really happening in your charging setup.

Key Benefits

• Real-Time Voltage Measurement — see exactly what voltage your charger is outputting at any moment
• Real-Time Current Measurement — monitor amperage draw to verify fast charging is active
• Power (Wattage) Display — instantly see total wattage being delivered to your device
• Capacity Tracking — accumulates mAh over time to measure real power bank capacity
• USB-C PD Support — fully compatible with USB Power Delivery protocols and high-voltage charging
• USB-A Pass-Through — works with both USB-A and USB-C connections
• Digital LCD/OLED Display — clear, easy-to-read readout of all measurements simultaneously

Whether you're a tech enthusiast who wants to verify your gear, a power user who needs to know their power bank's real capacity, or someone troubleshooting a slow-charging cable — this tester pays for itself the first time you use it. Compact enough to keep in your bag, powerful enough to give you real data on every charge.

Frequently Asked Questions

How do I use it?
Plug the tester between your charger (or power bank) and your device. The display immediately shows real-time voltage, current, and wattage. Capacity accumulates over the charging session.

Does it support USB Power Delivery (PD)?
Yes — fully compatible with USB-C PD protocols, including high-voltage charging up to the rated maximum.

Can I use it to test my power bank's real capacity?
Yes — connect your power bank to the tester and discharge it into a device. The accumulated mAh reading shows the real delivered capacity.

Will it slow down my charging?
No — the tester is a pass-through device with negligible resistance. It does not meaningfully affect charging speed.

What's the difference between the variants?
Variants may differ in display type (LCD vs OLED) or connector configuration. Check the variant details at checkout for specifics.

SPECIFICATIONS

Measurements: Voltage, current, wattage, capacity (mAh)
Compatibility: USB-C PD, USB-A
Display: Digital LCD/OLED
Design: Compact inline pass-through
Weight: 0.10 lbs / 0.046 kg