Keweisi USB Current & Voltage Tester – Precision Power Monitoring for Every Device

Accurate Real-Time Measurement
– Displays voltage (3.5-7.0V) and current (0-3A) with ±1% precision, ensuring reliable diagnostics for USB chargers, power banks, and cables.
Durable & Compact Design
– High-quality ABS shell with a polished finish, built to withstand daily use. Ultra-portable (58x22x12mm) for on-the-go testing.
Wide Compatibility
– Works with all USB-powered devices (smartphones, tablets, drones) to verify charging efficiency and detect faulty adapters.
Clear OLED Display
– Bright, low-power screen shows real-time data (voltage, current, power, capacity) for instant analysis.
Plug-and-Play Convenience
– No setup required; instantly monitors power flow when connected between charger and device.
Essential for Tech Enthusiasts
– Ideal for optimizing charging setups, troubleshooting slow charging, or testing DIY power projects.
Bulk Order Advantage
– Wholesale pricing available for resellers, repair shops, and electronics educators. Stock up on this must-have diagnostic tool.