XY-FZ35 Constant Current Electronic Load Module 35W 5A DC 5–30V
XY-FZ35 Constant Current Electronic Load Module 35W 5A DC 5–30V
XY-FZ35 Adjustable Constant Current Electronic Load Module — 35W, 5A, DC 5.0–30.0V
The XY-FZ35 Adjustable Electronic Load Module is a compact, feature-packed constant current load tester designed for engineers, hobbyists, and technicians who need precise battery discharge testing, power supply evaluation, and component aging verification. With real-time multi-parameter display, intelligent thermal management, and robust protection circuits, this module delivers lab-grade performance in a portable form factor.
Made in Mainland China.
Key Features
- Multi-Parameter Live Display: Simultaneously monitors and displays current (A), voltage (V), power (W), capacity (Ah), and discharge time — discharge capacity and elapsed time are logged automatically for hands-free testing.
- Precision Current Adjustment: Rotary encoder potentiometer allows current adjustment accurate to 0.01A, with a current-lock function to prevent accidental changes mid-test.
- Adjustable Load Functions: Set a target discharge capacity (OAh) and a maximum discharge duration (OHp) to enable fully unattended power aging and endurance testing.
- Intelligent Thermal Control: Hydraulic-bearing temperature-controlled fan activates automatically when output power exceeds 10W or internal temperature exceeds 40 °C — keeping the module cool without unnecessary noise during light-load operation.
- Comprehensive Protection Suite: Adjustable Over-Voltage (OVP), Over-Current (OCP), Over-Power (OPP), and Under-Voltage (UVP) protection thresholds, plus fixed Over-Temperature Protection (OTP) at ~80 °C, safeguard both the module and the device under test.
- Reverse-Connection Safe: Input and output stages are protected against reverse polarity — no burnt traces, no damaged components.
Technical Specifications
| Model | XY-FZ35 |
| Input Voltage | DC 5.0 – 30.0 V |
| Output Voltage | DC 1.5 – 25.0 V |
| Load Current Range | 0.00 – 5.00 A |
| Maximum Discharge Power | 35 W |
| Constant Current Accuracy | ±(1% + 3 digits) |
| Voltage Accuracy | ±(0.5% + 1 digit) |
| OVP Default | 25.2 V (adjustable) |
| OCP Default | 5.10 A (adjustable) |
| OPP Default | 35.5 W (adjustable) |
| UVP Default | 1.5 V (adjustable) |
| OTP | ~80 °C (fixed) |
| Fan | Hydraulic bearing, 8,000 ± 10% RPM, auto temp-controlled |
| Max Input (Safe) | <50 VAC / 75 VDC |
What's in the Box
- 1 × XY-FZ35 Adjustable Electronic Load Module
Who Is This For?
The XY-FZ35 is ideal for electronics engineers, makers, and DIY enthusiasts who regularly perform battery capacity testing, power supply load testing, LED driver verification, and component burn-in/aging tests. Its adjustable protection thresholds make it versatile enough for lithium, NiMH, lead-acid, and other battery chemistries.
For further guidance on electrical safety when working with test equipment, visit OSHA's Electrical Safety Resource.
Frequently Asked Questions
Q: What battery types can I test with the XY-FZ35 electronic load module?
A: The XY-FZ35 works with any DC source within its 5.0–30.0 V input range, making it compatible with lithium-ion, LiFePO4, NiMH, lead-acid packs, and regulated power supplies. Simply set the appropriate Under-Voltage Protection (UVP) threshold to match your battery's minimum safe discharge voltage.
Q: Does the XY-FZ35 require any external power supply to operate?
A: No separate power supply is needed. The module draws its operating power directly from the device under test (the DUT), so you can connect it straight to your battery or power source and begin testing immediately.
Q: How does the constant current lock function work?
A: Once you dial in your desired test current using the rotary encoder, you can engage the current-lock feature to prevent the value from being accidentally changed during a long discharge or aging test. This is especially useful for unattended overnight endurance runs.
Q: What happens if the module overheats during a high-power test?
A: The built-in Over-Temperature Protection (OTP) triggers at approximately 80 °C and shuts down the load automatically to protect the module and the device under test. The intelligent temperature-controlled fan also pre-emptively spins up whenever power exceeds 10 W or the internal temperature surpasses 40 °C, keeping thermals well managed during extended sessions.