UM Series Color LCD USB Power Meter and Charger Tester

See what your charger, cable, or power bank is really delivering. This compact USB voltage tester displays voltage, current, power, capacity, energy, and other useful charging data. Its color LCD keeps readings clear, while supported models can identify common quick-charge modes and assess cable resistance. Choose UM24, UM25, or UM34 variants, with Bluetooth available on corresponding C versions.

Key Features

• Monitors voltage, current, power, capacity, energy, and charging time
• Color LCD presents multiple readings clearly
• Recognizes supported quick-charge modes
• Stores measurement groups for comparisons

Why Choose Our UM Series Tester

Unlike basic single-reading meters, this USB current meter combines several charging measurements in one portable device. Multiple models let you select suitable ports, range, and communication features.

Perfect For

Ideal for checking USB chargers, Type-C-compatible connections, cables, power banks, phones, tablets, and other low-voltage USB devices. Useful for hobbyists, technicians, repair benches, and everyday troubleshooting.

How to Use

Connect the tester between the power source and device, then review the display. Select the exact model before ordering because ports, ranges, and Bluetooth support vary. Stay within its rated limits.

Check Your Charging Setup with Confidence

Choose the UM Series charger tester and make cable, charger, and power-bank checks easier.