ALL PRODUCTS

GDBT-8620 Professional Battery Internal Resistance Tester

GDBT-8620 Professional Battery Internal Resistance Tester

GDBT-8620 Digital Intelligent High-Precision Battery Internal Resistance Tester with 2V-24V Auto-Recognition, ±0.5% Accuracy, Histogram Analysis, Optional Oscilloscope Function, for Lead-Acid Battery Full Lifecycle Health Management.

Description
Specifications
Applications
Advantages
FAQ
Recommended Products

Description

GDBT-8620 is a professional high-precision flagship battery internal resistance tester designed for accurate health assessment, fault early warning and full lifecycle management of valve-regulated lead-acid (VRLA) battery packs in 110kV~1000kV substations, power plants, communication base stations, UPS systems and data centers. It strictly complies with DL/T 1397.5-2014, DL/T 724-2000 and IEC 60896-2:2008 standards, adopting advanced 1kHz AC injection method and four-terminal Kelvin measurement technology that effectively eliminates lead resistance interference and ensures industry-leading measurement accuracy.

The instrument features 2V/6V/12V/24V full voltage coverage and industry-leading ±0.5% internal resistance accuracy, making it ideal for testing both single cells and 24V battery modules. Its built-in 200+ mainstream battery model reference database automatically compares measured values with standard values and provides objective health state evaluation. The 5-inch high-definition color touch screen with touch+key dual operation meets different user habits, and the voltage/inner resistance/capacity histogram analysis function allows intuitive comparison of battery performance.

Specifications

Parameter	Specification
Compliance Standards	DL/T 1397.5-2014, DL/T 724-2000, IEC 60896-2:2008, IEEE 1188-2005
Test Principle	1kHz AC injection method
Measurement Method	Four-terminal Kelvin measurement
Supported Voltages	2V, 6V, 12V, 24V (automatic recognition)
Internal Resistance Range	0.000mΩ ~ 99.999mΩ
Internal Resistance Resolution	0.001mΩ
Internal Resistance Accuracy	±0.5% reading ± 6 digits
Voltage Measurement Range	0.000V ~ 25.000V
Voltage Resolution	1mV
Voltage Accuracy	±0.2% reading ± 6 digits
Temperature Measurement Range	-10℃ ~ +60℃
Temperature Accuracy	±1℃
Connection Resistance Measurement	Yes
Histogram Analysis	Yes (voltage, internal resistance, capacity)
Oscilloscope Function	Optional (voltage ripple measurement)
Health State Evaluation	Yes (excellent/good/poor/faulty)
Built-in Reference Database	200+ mainstream battery models, user-definable
Temperature Compensation	Yes (automatic compensation to 25℃)
On-Line Test	Yes (floating charge state, no disassembly required)
Display	5-inch 800×480 color capacitive touch screen
Operation Mode	Touch screen + physical keys dual operation
Language Support	Chinese / English bilingual
Data Storage	64Mbit Flash (999 groups × 500 cells) + 4G SD card
Communication Interface	USB 2.0 (U-disk export)
Power Supply	Built-in 11.1V/2400mAh lithium battery; AC 220V charging
Battery Life	≥8 hours continuous working time
Charging Time	≤4 hours
Protection Grade	IP54 (waterproof and dustproof)
Operating Temperature	-10℃ ~ +50℃
Humidity	≤85% RH (non-condensing)
Dimensions (L×W×H)	220×170×52mm
Weight	~1.1kg (including battery)
Enclosure	ABS+PC engineering plastic with rubber protective cover

Applications

Core Test Objects

Single lead-acid cells: 2V, 6V, 12V valve-regulated lead-acid (VRLA) cells (AGM, gel)
Battery modules: 24V series-connected battery modules
Battery packs: 48V, 110V, 220V series-connected battery packs
Application systems: Substation DC systems, communication base station power systems, UPS systems, data center backup power, renewable energy storage systems

Typical Usage Scenarios

Power companies: 110kV~1000kV substation battery pack routine inspection, lagging cell identification, fault early warning and lifecycle management
Telecom operators: Communication base station battery pack regular inspection, performance evaluation and replacement planning
Data centers: UPS battery pack health screening, capacity assessment and life prediction
Battery manufacturers: Factory quality control, battery performance test, grading and classification
Third-party testing institutions: Battery system certification testing, safety assessment and on-site calibration services

Advantages

Compliance with Latest Industry Standards

Fully meets DL/T 1397.5-2014, DL/T 724-2000, IEC 60896-2:2008 → test results are globally recognized

Industry-Leading ±0.5% High Accuracy

3× higher accuracy than ordinary testers, ensuring reliable and consistent test results → provides scientific basis for battery maintenance decisions

2V-24V Full Voltage Coverage

Supports both single cells and 24V modules, one instrument covers all mainstream battery types → reduces equipment purchase cost by 50%

Intelligent Histogram Analysis

Intuitive graphical display of battery performance distribution, quickly identifies lagging cells → improves test efficiency by 60%

Ultra-Large Capacity Dual Storage System

999×500 internal storage + 4G SD card expansion, supports unlimited data storage → establishes complete battery lifecycle management files

Optional Oscilloscope Ripple Measurement

One instrument completes both internal resistance test and power quality analysis → eliminates the need for additional oscilloscopes

FAQ

Q: Can GDBT-8620 test 24V battery modules?

A: Yes. GDBT-8620 supports 0-25V DC voltage range and automatically identifies 24V battery modules. It can accurately measure the internal resistance and voltage of 24V modules, which is ideal for testing UPS and communication base station battery systems.

Q: What is the oscilloscope function used for?

A: The optional oscilloscope function can real-time display the battery voltage waveform and measure voltage ripple. This is very useful for analyzing the influence of charger ripple on battery life and diagnosing power quality problems in DC systems.

Q: How to calibrate the instrument?

A: GDBT-8620 can be calibrated using standard resistors and standard voltage sources with accuracy not lower than 0.1 class. The calibration procedure is simple and fast: