ET5420A+ Dual-Channel Programmable DC Electronic Load Tester 0-150V 0-20A*2 400W Battery & Power Supply Analyzer High-Precision Load Meter with USB & RS485 Interface CC/CV/CR/CP Modes 2.8” TFT Display

The ET5420A+ Dual-Channel Programmable DC Electronic Load is a professional-grade load tester designed for power supply, battery, and component testing. With high-precision measurement capabilities (1mV/1mA resolution) and dual-channel operation (20A2, 200W2), this device is ideal for R&D laboratories, production lines, and maintenance applications.Versatile Testing Capabilities: Supports six basic measurement modes: Constant Voltage (CV), Constant Current (CC), Constant Resistance (CR), Constant Power (CP), CC+CV, and CR+CR.Advanced battery testing features, including capacity analysis, internal resistance measurement, and controlled discharge simulations. LED testing capabilities ensure accurate brightness and performance evaluation for LED manufacturers.High-Accuracy & Advanced Protection:±0.05% accuracy in CV/CC modes ensures reliable test results.Multiple safety mechanisms, including over-voltage, over-current, over-power, and over-temperature protection.Smart cooling system with adjustable fan speed to maintain optimal working conditions while minimizing noise.Enhanced User Experience:2.8-inch TFT LCD screen provides rich graphical data display for easy monitoring.Key-lock function prevents accidental misoperation.USB & RS485 interfaces allow remote control and real-time data recording.This high-performance DC electronic load tester is an essential tool for professionals working with power supply development, battery quality control, and electronic component testing.Package Includes:1 × ET5420A+ DC Electronic Load Tester1 × Test clamp1 × EU Power Plug2 × Fuses1 × User Manual

• 【High-Precision Programmable DC Load】 Equipped with dual 20A channels, supporting up to 400W total power (200W*2). Features high-resolution measurement (1mV/1mA) and ±0.05% accuracy, ensuring precise load testing for power supplies, batteries, and components.
• 【Comprehensive Battery & Power Supply Testing】 Supports multiple discharge modes (CC/CR) for accurate battery capacity analysis. Provides real-world simulation for battery aging tests, power supply performance evaluation, and internal resistance measurements.
• 【Multi-Mode Functionality】 Includes Constant Voltage (CV), Constant Current (CC), Constant Resistance (CR), Constant Power (CP), and advanced CC+CV / CR+CR dual-mode testing for flexible load simulations in R&D, manufacturing, and repair applications.
• 【Advanced Safety & Protection】 Integrated over-voltage, over-current, over-power, over-temperature protection with user-configurable limits. Features intelligent fan speed control to minimize noise, along with polarity reverse warning for added safety.
• 【User-Friendly Design with Smart Interface】 2.8-inch TFT LCD display provides clear, real-time data visualization. Includes USB and RS485 communication ports for remote control & data logging. Comes with an intuitive interface, key-lock function, and built-in buzzer alarm.