Keweisi USB Current and Voltage Tester
Accurate real-time monitoring of voltage (3.0V–9.0V) and current (0–5A) with a high-precision LCD display. Durable ABS shell with fire-resistant coating and reinforced solder joints for prolonged heavy-duty use. Ultra-compact design (60mm x 25mm x 12mm) for portability in testing power banks, car chargers, and USB wall adapters. Wide compatibility with USB-A, USB-C, and Lightning cables to diagnose charging efficiency across devices. Plug-and-play operation with auto-sleep function to conserve battery during inactivity. Ideal for engineers, DIY enthusiasts, and travelers to verify charger safety and optimize power delivery. Exclusive bulk pricing for wholesalers—global shipping with guaranteed lowest rates.