Keep your devices and chargers in check with the Bolantedz Voltage Meters Current Voltage Capacity Battery Tester. This mini USB tester is the perfect tool for monitoring voltage, current, and battery capacity across multiple devices including PC USB ports, cell phone chargers, car chargers, and power banks. Its compact design makes it portable and easy to use anywhere—whether at home, in the lab, or in the factory.
This digital voltage doctor clearly displays all data, letting you measure charging performance, judge cable quality, and ensure safe operation of all your USB-powered devices. No additional power supply is required—simply plug and play. Its accurate readings (±1%) and wide measurement range make it ideal for DIY electronics, tech enthusiasts, and professional technicians alike.
🔹 Key Features:
Mini USB Tester: Portable and convenient for on-the-go use
Accurate Measurements: Voltage 4-20V (±1%), Current 0-3A (±1%), Time 0-99H
Wide Compatibility: Works with PC USB, chargers, car ports, and power banks
DIY & Professional Use: Ideal for labs, factories, and personal electronics testing
Plug & Play: No additional power supply needed
Clear Digital Display: Instantly view voltage, current, and battery capacity
