UNI-T UT3550 Digital Battery Internal Resistance Tester

Description

The UNI-T UT3550 Digital Battery Internal Resistance Tester is a high-precision, benchtop analytical instrument engineered for rigorous battery cell evaluation and automated production line testing. Utilizing a 1kHz AC vector measurement method, this unit delivers concurrent, high-resolution readings of internal resistance and voltage. Built with Original Engineering standards, the UT3550 ensures maximum Technical Compatibility with automated sorting systems and quality control frameworks, optimizing testing throughput while maintaining strict data fidelity. Standard Lead Time applies for global B2B procurement.

Technical Specifications:
Manufacturer: UNI-T
Model: UT3550
Measurement Parameters: AC Resistance (ESR), DC Voltage
Resistance Measurement Range: 0.001mΩ to 30.00Ω
Voltage Measurement Range: 0.0001V to 100.00V DC
Test Signal Frequency: 1kHz ± 0.2Hz
Basic Resistance Accuracy: ± 0.5%
Basic Voltage Accuracy: ± 0.05%
Measurement Speed: Fast (70 readings/s), Medium (15 readings/s), Slow (3 readings/s)
Display: 3.5-inch TFT LCD
Trigger Modes: Internal, Manual, External, Bus
Communication Interfaces: RS-232, USB Device, Handler (EXT I/O)
Operating Temperature: 0°C to 40°C
Operating Humidity: ≤ 80% RH
Power Supply: 100V – 240V AC, 50/60Hz
Dimensions: 214mm x 89mm x 340mm
Weight: 3.0 kg
Certifications: CE, RoHS

Industrial Application:
The UT3550 is purpose-built for the high-speed evaluation of lithium-ion, lead-acid, and alkaline battery packs. In automated EV battery manufacturing and energy storage system (ESS) assembly, the tester’s Handler interface allows seamless integration into PLC-driven sorting machines. By accurately identifying micro-variations in cell impedance at 70 readings per second, engineers can isolate defective cells before pack assembly, preventing thermal runaway risks and ensuring uniform charge/discharge cycles across the battery module.

Key Attributes
Application: Battery internal resistance test
Support Battery: Lithium Battery
Place of Origin: Guangdong, China
Model Number: UT3550
Brand Name: UNI-T
Charge/Discharge Voltage: 0.0001V~100.00V
Flashlight: LED
Input Resistance: 0.001mΩ~30.00Ω
Maximum Measuring Voltage: 100V
Type: Digital Battery Tester
VOLTAGE RANGE: 0.0001V~100.00V
RESISTANCE RANGE: 0.001mΩ~30.00Ω
ACCURACY: Voltage:0.05% ,Resistance:0.5%
CONNECTIVITY: Type-C , USB DEVICE
DISPLAY: 3.5'' TFTLCD & 0.96'' OLED

Packaging and Delivery
Selling Units: Single item
Single package size: 36X35X16 cm
Single gross weight: 3.000 kg