Mobile power supply aging test process

Aging tests are a crucial quality inspection step in the production process of mobile power supplies. The core purpose is to verify the stability, safety and performance reliability of the products during long-term use, to identify potential faulty products, and to strengthen the quality defense line before leaving the factory.To ensure the accuracy of the test results and the standardization of the process, the specific test procedures are as follows:

1. Initial state check

Place the mobile power bank to be tested (in its bare or semi-finished state) at the designated testing workstation. Complete the following comprehensive checks one by one to ensure that the initial state of the product complies with the testing standards: The appearance should be free of damage, scratches, deformation and obvious color differences; The buttons should press smoothly, have sensitive rebound, and there should be no sticking, malfunction or abnormal pressing feedback.The TYPE-C input/output interface is free from looseness, oxidation, or damage. The insertion and removal feel smooth. The pins of the interface show no bending, deformation, or damage. Only when all the initial conditions are met can the subsequent automatic aging test be carried out, to prevent the test results from being affected by initial defects.

2. Discharge test

First, fully charge the mobile power bank to be tested. Then connect it to the Zhongyu Aging Test System. The system will discharge the battery at a constant current according to the preset standards until the cell triggers the protection voltage (the conventional standard is 3.0V per cell). The test system will automatically stop the discharge. The entire testing process is precisely recorded by the system for the discharge duration, and the actual output energy of the mobile power bank is calculated. This data directly determines the number of times it can charge devices such as mobile phones and tablets, and is one of the core indicators for evaluating the product performance.

3. Charging test

After the discharge test was completed, the aging test system of Zhongkongyuan automatically connected the mobile power supply to the charging module. It was compatible with mainstream fast charging protocols such as UFCS integrated fast charging, USB-PD, FCP, SCP, Super VOOC, Mi Turbo Charge, Flash Charge, QC5, etc., precisely simulating the daily charging scenarios. During the test, the system monitored the entire charging process in real time, focusing on recording the curves of voltage and current changes, to verify whether the product could switch to constant current charging (during the fast charging stage) or constant voltage charging (during the trickle charging stage) modes, ensuring a stable charging process without abnormal fluctuations in voltage or current, or situations such as premature stopping of charging, overcharging, or insufficient charging. Ultimately, it could fully charge the battery without any abnormal issues such as premature stopping of charging, overcharging, or insufficient charging.

4. Cyclic charging and discharging test

For mobile power supplies with high-quality standards, the "charging-discharging" complete process needs to be repeated for 3 to 5 cycles for testing. Through multiple cycle tests, the cycle life and capacity degradation rate of the battery cells, as well as the long-term thermal stability of the circuit board and the reliability of the charge-discharge protection mechanism are further verified. Precisely identify potential faults that may occur in the product during long-term repeated use, and ensure that the product meets the requirements for long-term use.

5. Data recording and exception handling

The computer-monitored aging equipment provided by Zhongke Yuan's aging testing system can collect and automatically record the key parameters of each mobile power supply during the entire testing process in real time, including charging/discharging voltage, current, cell temperature, test duration, etc. This ensures that the data is traceable and verifiable. Before the test, the staff preset the safety thresholds for each parameter. Once the system detects that a certain parameter exceeds the threshold (such as excessively high cell temperature, abnormal voltage fluctuations, sudden increase or decrease in current, etc.), it will immediately send an alarm signal and automatically cut off the testing channel to prevent the expansion of the fault. At the same time, it marks the abnormal products to facilitate the subsequent technicians in identifying the cause of the fault and implementing corrective measures.

Summary

The Zhongyuanyuan aging test system is the core support for quality control of mobile power supplies - for manufacturers, it can effectively screen out faulty products, strengthen brand reputation, and reduce the rate of after-sales faults; for consumers, it is the last important line of defense to ensure daily usage safety, guarantee product performance compliance, and enhance the usage experience. It is both the "passport" for product manufacturing and the "pillar of confidence" for consumers to use the product with peace of mind.