Battery Testers · May 30, 2025

WANGCL DC Electronic Load Tester FX35: A Compact and Reliable Power Testing Solution

WANGCL DC Electronic Load Tester FX35: A Compact and Reliable Power Testing Solution

For engineers, hobbyists, and professionals who require precise power measurement and battery testing, the WANGCL DC Electronic Load Tester FX35 is a versatile and efficient tool. Designed for constant current load testing, this compact device offers a range of features that make it ideal for evaluating USB power sources, batteries, and DC power supplies.

Key Features and Performance

1. Accurate Power Measurement
The FX35 ensures reliable measurements with its independent measurement and display circuits, preventing interference with the test source. The LCD screen clearly displays critical parameters, including:

  • Input Voltage (V) – Monitors real-time voltage levels.
  • Input Current (A) – Measures current draw with precision.
  • Input Power (W) – Calculates power consumption efficiently.
  • Discharge Time (H:M:S) – Tracks battery discharge duration.
  • Discharge Capacity (mAh) – Helps assess battery health.
  • Temperature (°C) – Prevents overheating with thermal monitoring.

2. Adjustable Load & Protection Features
With a 5A max current and 35W max power handling, the FX35 allows flexible testing via its hand-adjustable potentiometer. Safety is prioritized with multiple protection mechanisms:

  • OVP (Overvoltage Protection) – Safeguards against excessive voltage.
  • OCP (Overcurrent Protection) – Prevents damage from high current.
  • OPP (Overpower Protection) – Limits power overload.
  • OTP (Overtemperature Protection) – Ensures thermal safety.
  • LVP (Low Voltage Protection) – Stops discharge at unsafe levels.

3. Intelligent Cooling System
The built-in aluminum heatsink and smart cooling fan activate automatically when power exceeds 10W or temperatures rise above 40°C, ensuring stable operation under heavy loads.

4. User-Friendly Operation
The device supports automatic data storage in case of power loss, allowing users to resume tests without losing progress. The long-handle potentiometer provides smooth current adjustment, making fine-tuning effortless.

Customer Feedback

Philip Bradbury, a verified buyer, praised its utility:
“After using this for several months, I find it indispensable for reviewing power banks and power supplies. The ability to calibrate against a known meter is a big plus.”

Another user, Glyn Storey, highlighted its versatility:
“Although fitted with a USB A plug, it works well with external DC sources like my 12V battery. The overload protection actually works!”

Final Verdict

The WANGCL DC Electronic Load Tester FX35 is a well-built, feature-rich tool for professionals and enthusiasts alike. Its high accuracy, robust protection features, and intuitive controls make it a valuable addition to any electronics toolkit. Whether testing USB power banks, batteries, or DC adapters, this device delivers reliable performance in a compact form.

ASIN: B09SL19Q1S

Available for Amazon Prime