What functions do battery internal resistance testing instruments need to have

The internal resistance testing instrument for batteries is a core tool for evaluating the health status, capacity, and performance of batteries, and needs to meet the testing requirements of multiple scenarios and high precision. The following is a detailed explanation of its core functions and technical requirements:

1. Basic measurement function

① Accurate measurement of internal resistance

Supports dual modes of DC discharge method and AC injection method, suitable for different battery types.

The measurement range covers the level of μ Ω (such as 0.1 μ Ω -100m Ω), with an accuracy better than ± 0.5%.

② Voltage synchronous monitoring

Real time measurement of battery voltage (range 0-30V, accuracy ± 0.1%) to assist in determining battery overcharge/undervoltage status.

Application: Automatically trigger internal resistance retest when voltage is abnormal to avoid data distortion.

③ Temperature compensation function

Built in temperature sensor or external probe, automatically corrects the impact of temperature on internal resistance.

Meaning: The internal resistance value will significantly change under high temperature environment, and the compensation function can avoid misjudgment.

2. Data analysis and diagnostic functions

① Battery Health Status Assessment

Generate SOH percentage through algorithms based on internal resistance, voltage, and historical data.

② Capacity estimation

Estimate the remaining capacity of the battery by combining internal resistance and voltage.

Application: In UPS system maintenance, quickly screen batteries with insufficient capacity.

③ Trend analysis and warning

Store historical data and generate trend curves, set internal resistance/voltage thresholds, and automatically sound an alarm when exceeded.

3. Operation and extension functions

① Portability and ease of use

Handheld design: Weight<1kg, supports one handed operation.

Large screen display: Color LCD screen, real-time display of internal resistance, voltage, temperature and other parameters.

One click testing: Simplify the operation process and reduce personnel skill requirements.

② Data Management and Export

Built in storage (≥ 1000 sets of data), supports querying by time and battery number.

Interface extension: USB/Bluetooth/Wi Fi, export Excel/PDF reports for easy generation and maintenance of ledgers.

③ Multi battery compatibility

Supports 2V, 6V, 12V individual batteries, as well as series connected battery packs.

Automatic recognition: Automatically matching battery types through fixtures or probes to avoid misoperation.

The ZC-422A intelligent battery internal resistance tester adopts the most advanced AC discharge testing method, which can accurately measure the voltage and internal resistance at both ends of the battery, and judge the quality of the battery capacity and technical status based on this. Customers can choose the results of internal resistance testing, voltage testing, and capacity estimation of the battery according to their own situation as the basis for internal resistance matching when assembling new batteries; Testing the internal resistance of the battery before and after discharge is used to identify truly outdated batteries.

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com