KWS-V21 USB Tester

SKU: EAP-001178

In stock

  • Item Type: USB power tester
  • Model: KWS-V21
  • Voltage: Input / Output Voltage: 3.5-20v, Voltage Resolution: 0.01V
  • Current: Input / Output Current: 0-3.3A, Current Resolution: 0.01A
  • Accuracy: ±1%
  • Line Loss: About 0.1Ω
  • IN: Input is connected to the charger’s output port
  • RESET: Reset button, press 3-5 seconds, the screen will be cleared
  • OUT: Output terminal is connected to the data line USB port

8,700 Ks

In stock

  • Advantage: Compatible with fast-charger compatible, power tester can work under up to 20V and it does not interfere with fast charge negotiation.
  • Great Performance: Empty display with memory function after power off, power meter is with high performance according to strict rule.
  • Practical Tool: Can measure USB charging voltage, current and discharge capacity over time.
  • Extensive Usage: Can be used to check the performance of USB cables, wall chargers, car chargers and power banks.


  • It measures the current and voltage of the power supply unit with a USB port
  • It can measure current and voltage of the power supply equipment with USB port
  • Plug and play, no extra power supply needed
  • The voltage and current will be displayed circularly
  • Small sized, easy and convenient to carry
  • Plug and play, no extra power required
  • The voltage and current will show a circle
SKU: EAP-001178 Categories: ,

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