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Compact USB-C power meter with digital display and Bluetooth antenna

BFKK

BFKK USB-C Power Meter 4-24V 6.5A Bluetooth 16-bit

SKU CH-2MM9-TXBEV

Measures USB-C voltage, current and power from 4 to 24 V up to 6.5 A with 16-bit resolution down to 0.00001, supports PD and QC 2.0 and 3.0, and streams live data to an Android app or PC software

  • Product typeOthers
  • Bluetooth app shows live voltage, current and curves with over-limit alarms
  • PC software manages data, controls protocols and upgrades firmware without drivers
  • 16-bit ADC and PD chip test chargers, power banks, cables, phones and laptops
  • 5/6-digit display resolves to 0.00001 for real-time monitoring of subtle changes
  • Reads E-Marker and DASH cable chips plus detects weak no-load current

What it is

The BFKK USB-C power meter measures voltage, current and power from 4 V to 24 V at up to 6.5 A. It uses a 16-bit ADC for high-resolution readings down to 0.00001 and supports QC 2.0 and QC 3.0 trigger protocols. Bluetooth connects the meter to an Android app for live curve display and alarm setup. Driver-free PC software adds data logging, protocol control and firmware updates. It is suited for engineers, technicians and hobbyists who need to verify USB-C chargers, power banks, cables and device draw.

Before ordering

Confirm the device under test uses a USB-C port and operates within the 4 V to 24 V range. The Bluetooth companion app currently runs only on Android, so an Android phone or tablet is required for wireless monitoring. PC software works without extra drivers but needs a USB connection to the meter. No external power supply is needed for the meter itself; it draws operating power from the measured line. Ensure the test cable or load can handle up to 6.5 A if you plan to measure near the upper limit.

Under sustained load

The 16-bit ADC maintains 0.00001 resolution during continuous operation, allowing detection of small drift in voltage or current over time. Real-time curve recording on both the Android app and PC software captures thermal effects and stability without gaps. Over-voltage and over-current alarms can be configured in the app to trigger before limits are exceeded. The meter’s own power draw remains low, so it does not significantly load the source during long test sessions. Firmware upgrades via the PC tool keep measurement algorithms current.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $82.99
Pricier than about 60% of the 3,030 comparable items (median $54.99).

Specifications

Product
Product typeOthers

Questions about this item

What comes in the box and do I need to buy cables or a power source separately?

The meter itself is supplied; a USB-C cable and a 4 to 24 V power source such as a charger or power bank must be provided by the user.

How do I decide between using the Bluetooth app or the PC software for logging?

The Bluetooth app works on Android phones for live voltage, current and curve viewing plus alarm setting, while the driver-free PC software adds data management, protocol control and firmware upgrades.

What does the 0.00001 resolution mean when I am testing a laptop supply?

The display can show changes as small as 0.00001 V or A, so you can see fine fluctuations while a laptop charger delivers up to 6.5 A within the 4 to 24 V range.

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